How they did it: STAT reporters expose how ailing seniors suffer when Medicare Advantage plans use algorithms to deny care
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In a call with a long-time source, what stood out most to STAT reporters Bob Herman and Casey Ross was just how viscerally frustrated and angry the source was about an algorithm used by insurance companies to decide how long patients should stay in a nursing home or rehab facility before being sent home.
The STAT stories had a far-reaching impact:
- The U.S. Senate Committee on Homeland Security and Government Affairs took a rare step of launching a formal investigation into the use of algorithms by the country’s three largest Medicare Advantage insurers.
- Thirty-two House members urged the Centers for Medicare and Medicaid Services to increase the oversight of algorithms that health insurers use to make coverage decisions.
- In a rare step, CMS launched its own investigation into UnitedHealth. It also stiffened its regulations on the use of proprietary algorithms and introduced plans to audit denials across Medicare Advantage plans in 2024.
- Based on STAT’s reporting, Medicare Advantage beneficiaries filed two class-action lawsuits against UnitedHealth and its NaviHealth subsidiary, the maker of the algorithm, and against Humana, another major health insurance company that was also using the algorithm.
- Amid scrutiny, UnitedHealth renamed NaviHealth.
The companies never allowed an on-the-record interview with their executives, but they acknowledged that STAT’s reporting was true, according to the news organization.
Ross and Herman spoke with The Journalist’s Resource about their project and shared the following eight tips.
1. Search public comments on proposed federal rules to find sources.
Herman and Ross knew that the Centers for Medicare and Medicaid Services had put out a request for public comments, asking stakeholders within the Medicare Advantage industry how the system could improve.
There are two main ways to get Medicare coverage: original Medicare, which is a fee-for-service health plan, and Medicare Advantage, which is a type of Medicare health plan offered by private insurance companies that contract with Medicare. Medicare Advantage plans have increasingly become popular in recent years.
Under the Social Security Act, the public has the opportunity to submit comments on Medicare’s proposed national coverage determinations. CMS uses public comments to inform its proposed and final decisions. It responds in detail to all public comments when issuing a final decision.
The reporters began combing through hundreds of public comments attached to a proposed Medicare Advantage rule that was undergoing federal review. NaviHealth, the UnitedHealth subsidiary and the maker of the algorithm, came up in many of the comments, which include the submitters’ information.
“These are screaming all-caps comments to federal regulators about YOU NEED TO SOMETHING ABOUT THIS BECAUSE IT’S DISGUSTING,” Ross says.
“The federal government is proposing rules and regulations all the time,” adds Herman, STAT’s business of health care reporter. “If someone’s going to take the time and effort to comment on them, they must have at least some knowledge of what’s going on. It’s just a great tool for any journalist to use to figure out more and who to contact.”
The reporters also found several attorneys who had complained in the comments. They began reaching out to them, eventually gaining access to confidential documents and intermediaries who put them in touch with patients to show the human impact of the algorithm.
2. Harness the power of the reader submission box.
At the suggestion of an editor, the reporters added a reader submission box at the bottom of their first story, asking them to share their own experiences with Medicare Advantage denials.
The floodgates opened. Hundreds of submissions arrived.
By the end of their first story, Herman and Ross had confidential records and some patients, but they had no internal sources in the companies they were investigating, including Navihealth. The submission box led them to their first internal source.
The journalists also combed through LinkedIn and reached out to former and current employees, but the response rate was much lower than what they received via the submission box.
The submission box “is just right there,” Herman says. “People who would want to reach out to us can do it right then and there after they read the story and it’s fresh in their minds.”
3. Mine podcasts relevant to your story.
The reporters weren’t sure if they could get interviews with some of the key figures in the story, including Tom Scully, the former head of the Centers for Medicare and Medicaid Services who drew up the initial plans for NaviHealth years before UnitedHealth acquired it.
But Herman and another colleague had written previously about Scully’s private equity firm and they had found a podcast where he talked about his work. So Herman went back to the podcast — where he discovered Scully had also discussed NaviHealth.
The reporters also used the podcast to get Scully on the phone for an interview.
“So we knew we had a good jumping off point there to be like, ‘OK, you’ve talked about NaviHealth on a podcast, let’s talk about this,’” Herman says. “I think that helped make him more willing to speak with us.”
4. When covering AI initiatives, proceed with caution.
“A source of mine once said to me, ‘AI is not magic,’” Ross says. “People need to just ask questions about it because AI has this aura about it that it’s objective, that it’s accurate, that it’s unquestionable, that it never fails. And that is not true.”
AI is not a neutral, objective machine, Ross says. “It’s based on data that’s fed into it and people need to ask questions about that data.”
He suggests several questions to ask about the data behind AI tools:
- Where does the data come from?
- Who does it represent?
- How is this tool being applied?
- Do the people to whom the tool is being applied match the data on which it was trained? “If racial groups or genders or age of economic situations are not adequately represented in the training set, then there can be an awful lot of bias in the output of the tool and how it’s applied,” Ross says.
- How is the tool applied within the institution? Are people being forced to forsake their judgment and their own ability to do their jobs to follow the algorithm?
5. Localize the story.
More than half of all Medicare beneficiaries have Medicare Advantage and there’s a high likelihood that there are multiple Medicare Advantage plans in every county across the nation.
“So it’s worth looking to see how Medicare Advantage plans are growing in your area,” Herman says.
Finding out about AI use will most likely rely on shoe-leather reporting of speaking with providers, nursing homes and rehab facilities, attorneys and patients in your community, he says. Another source is home health agencies, which may be caring for patients who were kicked out of nursing homes and rehab facilities too soon because of a decision by an algorithm.
The anecdote that opens their first story involves a small regional health insurer in Wisconsin, which was using NaviHealth and a contractor to manage post-acute care services, Ross says.
“It’s happening to people in small communities who have no idea that this insurer they’ve signed up with is using this tool made by this other company that operates nationally,” Ross says.
There are also plenty of other companies like NaviHealth that are being used by Medicare Advantage plans, Herman says. “So it’s understanding which Medicare Advantage plans are being sold in your area and then which post-acute management companies they’re using,” he adds.
Some regional insurers have online documents that show which contractors they use to evaluate post-acute care services.
6. Get familiar with Medicare’s appeals databases
Medicare beneficiaries can contest Medicare Advantage denials through a five-stage process, which can last months to years. The appeals can be filed via the Office of Medicare Hearings and Appeals.
“Between 2020 and 2022, the number of appeals filed to contest Medicare Advantage denials shot up 58%, with nearly 150,000 requests to review a denial filed in 2022, according to a federal database,” Ross and Herman write in their first story. “Federal records show most denials for skilled nursing care are eventually overturned, either by the plan itself or an independent body that adjudicates Medicare appeals.”
There are several sources to find appeals data. Be mindful that the cases themselves are not public to protect patient privacy, but you can find the number of appeals filed and the rationale for decisions.
CMS has two quality improvement organizations, or QIOs, Livanta and Kepro, which are required to file free, publicly-available annual reports, about the cases they handle, Ross says.
Another company, Maximus, a Quality Improvement Contractor, also files reports on prior authorization cases it adjudicates for Medicare. The free annual reports include data on raw numbers of cases and basic information about the percentage denials either overturned or upheld on appeal, Ross explains.
CMS also maintains its own database on appeals for Medicare Part C (Medicare Advantage plans) and Part D, which covers prescription drugs, although the data is not complete, Ross explains.
7. Give your editor regular updates.
“Sprinkle the breadcrumbs in front of your editors,” Ross says.
“If you wrap your editors in the process, you’re more likely to be able to get to the end of [the story] before they say, ‘That’s it! Give me your copy,’” Ross says.
8. Get that first story out.
“You don’t have to know everything before you write that first story,” Ross says. “Because with that first story, if it has credibility and it resonates with people, sources will come forward and sources will continue to come forward.”
Read the stories
Denied by AI: How Medicare Advantage plans use algorithms to cut off care for seniors in need
UnitedHealth pushed employees to follow an algorithm to cut off Medicare patients’ rehab care
UnitedHealth used secret rules to restrict rehab care for seriously ill Medicare Advantage patients
This article first appeared on The Journalist’s Resource and is republished here under a Creative Commons license.
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Switchcraft – by Dr. Elaine Fox
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How do we successfully balance “a mind is like a parachute: it only works if it’s open”, with the importance of also actually having some kind of personal integrity and consistency?
Dr. Fox recommends that we focus on four key attributes:
- Mental agility
- Self-awareness
- Emotional awareness
- Situational awareness
If this sounds a little wishy-washy, it isn’t—she delineates and explains each in detail. And most importantly: how we can build and train each one.
Mental agility, for example, is not about being able to rapidly solve chess problems or “answer these riddles three”. It’s more about:
- Adaptability
- Balancing our life
- Challenging (and if appropriate, changing) our perspective
- Developing our mental competence
This sort of thing is the “meat” of the book. Meanwhile, self-awareness is more a foundational conscious knowledge of one’s own “pole star” values, while emotional awareness is a matter of identifying and understanding and accepting what we feel—anything less is self-sabotage! And situational awareness is perhaps most interesting:
Dr. Fox advocates for “trusting one’s gut feelings”. With a big caveat, though!
If we trust our gut feelings without developing their accuracy, we’re just going to go about being blindly prejudiced and often wrong. So, a whole section of the book is devoted to honing this and improving our ability to judge things as they really are—rather than as we expect.
Bottom line: this book is a great tool for not only challenging our preconceptions about how we think, but giving us the resources to be adaptable and resilient without sacrificing integrity.
Click here to check out Switchcraft on Amazon and level up your thinking!
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Dreams: Relevance, Meanings, Interpretations
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It’s Q&A Day at 10almonds!
Have a question or a request? We love to hear from you!
In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!
As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!
So, no question/request too big or small
❝I have a question or a suggestion for coverage in your “Psychology Sunday”. Dreams: their relevance, meanings ( if any) interpretations? I just wondered what the modern psychological opinions are about dreams in general.❞
We’ll indeed do that one of these Psychology Sundays! Thanks for suggesting it.
What we can say in advance is that there’s certainly not a single unified scientific consensus yet, but there are two or three prevailing views definitely worth covering, e.g. randomly generated, a by-product of reorganizing information in the brain, or expressions of subconscious thoughts/feelings.
There are also differences between a top-down/bottom-up approach to understanding dreaming, and efforts to tie those two together.
Watch this space!
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Sciatica Differs By Age, So How To Fix It Is Different Too!
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Over-50s specialist Will Harlow shows us how:
The backbone of good health
And no, it’s not just a case of “older = worse”!
The truth is, it’s not just quantitively different, it’s qualitatively different too.
First relevant difference: people aged 30–50 most commonly have sciatica from a bulging or herniated disc—estimated at about 90% in that group—whereas people over 70 are more likely to have degenerative discs, arthritis, or spinal stenosis.
Second relevant difference: disk hydration changes with age, so younger discs (which contain more water) can bulge further when injured, while discs over the age of 60–70 tend to dry out, thin, and stiffen, making large bulges less common. However, thinner discs and arthritic facet joints reduce space around spinal nerves, increasing the likelihood of nerve irritation.
So, do you see why advice that’s correct in midlife might be the opposite of what’s needed in later life?
Exercises designed for a well-hydrated bulging disc in younger adults can actively aggravate stenosis or arthritis in older adults!
So instead, in the 60+ age range, the goal is to gently mobilize the lower back into flexion, improve blood flow, reduce stiffness, and strengthen supportive muscles without provoking symptoms.
Here are some ways to do that:
- Knee rolls: lie on your back with your knees bent and gently move both knees side to side, to create rhythmic lumbar movement rather than long holds.
- Single or double knee hug: draw one knee towards your chest—or both knees if you comfortably can—to encourage gentle lumbar flexion while keeping your head and shoulders relaxed.
- Side-lying hip strengthening: lift your top knee while keeping your feet together and your pelvis steady to activate your gluteal muscles, which support your lower back and reduce strain.
- Seated flexion stretch: sit on a firm chair, slide your hands down your legs, and bend forwards briefly to open the spaces in your lower spine, which is especially good for alleviating stenosis-related symptoms.
Lastly, a note on safety: do avoid any movement that increases pain, and get assessed by a local physio if unsure.
For more on all of this plus visual demonstrations, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like:
True Sciatica Or Phantom Sciatica? Know The Difference (& What To Do)
Take care!
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People with dementia aren’t currently eligible for voluntary assisted dying. Should they be?
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Dementia is the second leading cause of death for Australians aged over 65. More than 421,000 Australians currently live with dementia and this figure is expected to almost double in the next 30 years.
There is ongoing public discussion about whether dementia should be a qualifying illness under Australian voluntary assisted dying laws. Voluntary assisted dying is now lawful in all six states, but is not available for a person living with dementia.
The Australian Capital Territory has begun debating its voluntary assisted dying bill in parliament but the government has ruled out access for dementia. Its view is that a person should retain decision-making capacity throughout the process. But the bill includes a requirement to revisit the issue in three years.
The Northern Territory is also considering reform and has invited views on access to voluntary assisted dying for dementia.
Several public figures have also entered the debate. Most recently, former Australian Chief Scientist, Ian Chubb, called for the law to be widened to allow access.
Others argue permitting voluntary assisted dying for dementia would present unacceptable risks to this vulnerable group.
Inside Creative House/Shutterstock Australian laws exclude access for dementia
Current Australian voluntary assisted dying laws exclude access for people who seek to qualify because they have dementia.
In New South Wales, the law specifically states this.
In the other states, this occurs through a combination of the eligibility criteria: a person whose dementia is so advanced that they are likely to die within the 12 month timeframe would be highly unlikely to retain the necessary decision-making capacity to request voluntary assisted dying.
This does not mean people who have dementia cannot access voluntary assisted dying if they also have a terminal illness. For example, a person who retains decision-making capacity in the early stages of Alzheimer’s disease with terminal cancer may access voluntary assisted dying.
What happens internationally?
Voluntary assisted dying laws in some other countries allow access for people living with dementia.
One mechanism, used in the Netherlands, is through advance directives or advance requests. This means a person can specify in advance the conditions under which they would want to have voluntary assisted dying when they no longer have decision-making capacity. This approach depends on the person’s family identifying when those conditions have been satisfied, generally in consultation with the person’s doctor.
Another approach to accessing voluntary assisted dying is to allow a person with dementia to choose to access it while they still have capacity. This involves regularly assessing capacity so that just before the person is predicted to lose the ability to make a decision about voluntary assisted dying, they can seek assistance to die. In Canada, this has been referred to as the “ten minutes to midnight” approach.
But these approaches have challenges
International experience reveals these approaches have limitations. For advance directives, it can be difficult to specify the conditions for activating the advance directive accurately. It also requires a family member to initiate this with the doctor. Evidence also shows doctors are reluctant to act on advance directives.
Particularly challenging are scenarios where a person with dementia who requested voluntary assisted dying in an advance directive later appears happy and content, or no longer expresses a desire to access voluntary assisted dying.
What if the person changes their mind? Jokiewalker/Shutterstock Allowing access for people with dementia who retain decision-making capacity also has practical problems. Despite regular assessments, a person may lose capacity in between them, meaning they miss the window before midnight to choose voluntary assisted dying. These capacity assessments can also be very complex.
Also, under this approach, a person is required to make such a decision at an early stage in their illness and may lose years of otherwise enjoyable life.
Some also argue that regardless of the approach taken, allowing access to voluntary assisted dying would involve unacceptable risks to a vulnerable group.
More thought is needed before changing our laws
There is public demand to allow access to voluntary assisted dying for dementia in Australia. The mandatory reviews of voluntary assisted dying legislation present an opportunity to consider such reform. These reviews generally happen after three to five years, and in some states they will occur regularly.
The scope of these reviews can vary and sometimes governments may not wish to consider changes to the legislation. But the Queensland review “must include a review of the eligibility criteria”. And the ACT bill requires the review to consider “advanced care planning”.
Both reviews would require consideration of who is able to access voluntary assisted dying, which opens the door for people living with dementia. This is particularly so for the ACT review, as advance care planning means allowing people to request voluntary assisted dying in the future when they have lost capacity.
The legislation undergoes a mandatory review. Jenny Sturm/Shutterstock This is a complex issue, and more thinking is needed about whether this public desire for voluntary assisted dying for dementia should be implemented. And, if so, how the practice could occur safely, and in a way that is acceptable to the health professionals who will be asked to provide it.
This will require a careful review of existing international models and their practical implementation as well as what would be feasible and appropriate in Australia.
Any future law reform should be evidence-based and draw on the views of people living with dementia, their family caregivers, and the health professionals who would be relied on to support these decisions.
Ben White, Professor of End-of-Life Law and Regulation, Australian Centre for Health Law Research, Queensland University of Technology; Casey Haining, Research Fellow, Australian Centre for Health Law Research, Queensland University of Technology; Lindy Willmott, Professor of Law, Australian Centre for Health Law Research, Queensland University of Technology, Queensland University of Technology, and Rachel Feeney, Postdoctoral research fellow, Queensland University of Technology
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Seven Exercises To Strengthen Your Brain
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The silly video thumbnail notwithstanding, these are actually very good exercises to do:
Use it or lose it
Try these:
- Schulte table: locate numbers in ascending order on a grid within 30 seconds to improve information processing speed and peripheral vision. You can find many Schulte table challenges online or in apps for a quick brain workout.
- Multicolor text: say the color of each word instead of reading the word itself to strengthen memory, concentration, and multitasking skills. Though it looks easy, it forces the brain to process information differently, which is what we are looking for here.
- Blindfolded tasks: perform small tasks with eyes closed, such as writing your name, drawing shapes, or typing, to keep the brain active and sharpen spatial memory and recall.
- Hand coordination: make a “peace” sign with one hand and an “Ok” sign with the other, then switch hands and repeat five times within 10 seconds to strengthen the mind-body connection.
- Using non-dominant hand: use your non-dominant hand for tasks like writing or brushing your teeth, to give your brain an extra workout, form new neural connections, and improve coordination.
- Brain games: play strategic games to enhance decision-making and memory. Chess is a great option, and also websites like Lumosity offer a variety of free brain-training games.
- Limiting technology dependence: Strengthen memory and self-reliance by reducing dependence on technology. Practise tasks such as doing calculations without a calculator, spelling things correctly, and remembering phone numbers, instead of always relying on tech to do it for you.
For more on all of these, plus visual examples for some of the exercises, enjoy;
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like:
The Physical Exercises That Build Your Brain
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What is silicosis and what does research say about it?
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Silicosis is a progressive, debilitating and sometimes fatal lung disease caused by breathing silica dust from cutting, drilling, chipping or grinding materials such as granite, sandstone, slate or artificial stone. The dust gets trapped in the lung tissue, causing inflammation, scarring and permanent damage.
Silicosis is a job-related lung disease and has no cure. The disease mostly affects workers in construction, stone countertop fabrication, mining, and even those who sandblast and stonewash denim jeans to create a ‘worn out’ look.
Silica is one of the most common minerals in nature. About 59% of the Earth’s crust is made of silica, found in quartz, granite, sandstone, slate and sand. Historically, people at the highest risk for the disease have worked in natural environments — mining, digging tunnels or doing quarry work. The disease was first documented by the Greek physician Hippocrates, who in 430 B.C. described breathing disorders in metal diggers.
But in recent decades there’s been renewed attention to the disease due to its more rapid progression and severity among younger workers. Research has shown that the culprit is artificial stone mostly used for countertops for kitchens and bathrooms, which has a very high silica content.
The new generation of coal miners is also at an increased risk of silicosis, in addition to black lung, because layers of coal have become thinner, forcing them to dig deeper into rock, as explained in a joint investigation by the Pittsburgh Post-Gazette and the Medill Investigative Lab at Northwestern University published on Dec. 4. CBS Sunday Morning also had a report on the same issue among West Virginia coal miners, aired as part of its Dec. 10 episode.
Silicosis in modern industries
Artificial, or engineered, stone used for countertops, also known as “quartz,” is formed from finely crushed rocks mixed with resin. Quartz is a natural mineral, but man-made products like many quartz countertops consist of not just quartz, but also resin, colors and other materials that are used to style and strengthen them.
The silica content of artificial stone is about 90%, compared with the 3% silica content of natural marble and 30% silica content in granite stones, according to the authors of a 2019 systematic review published in the International Journal of Environmental Research and Public Health.
The first reported case of silicosis associated with working with artificial stone was from Italy in 2010, according to a 2020 study published in Allergy. Since then, more studies have documented the growing number of cases among artificial stone workers, many of whom are from marginalized populations, such as immigrants.
A July 2023 study published in JAMA Internal Medicine found that in California, the disease mainly occurred among young Latino immigrant men. The disease was severe in most men by the time they sought care.
An August 2022 study, published in Occupational & Environmental Medicine, analyzing the Global Silicosis Registry, with workers in Israel, Spain, Australia and the U.S., found “a substantial emerging population of workers worldwide with severe and irreversible silica-associated diseases,” due to exposure from silica dust from engineered stone.
Other modern occupations such as denim sandblasting, work on dental prostheses, manufacturing of electrical cables and working on jewelry and semi-precious stones also put workers at risk of silicosis.
In the wake of modern-day silicosis cases, researchers have called for larger studies to better understand the disease and the discovery of effective treatments.
In the U.S. about 2.3 million workers are exposed to silica dust on the job, according to the American Lung Association. Other estimates show approximately 10 million workers in India, 3.2 million in the European Union and 2 million in Brazil work with material containing silica.
However, “the reporting system for occupational injuries and illnesses in the United States fails to capture many cases, leading to a poor understanding of silicosis incidence and prevalence,” writes Ryan F. Hoy, who has published extensively on the topic, in a June 2022 article in Respirology.
A 2015 study in the Morbidity & Mortality Weekly Report found the annual number of silicosis deaths declined from 185 people in 1999 to 111 in 2013, but the decline appeared to have leveled off between 2010 and 2013, the authors write. Another 2015 study in MMWR, examining silicosis deaths between 2001 and 2010, found the death rate from silicosis was significantly higher among Black people compared with whites and other races. Men also have a significantly higher death rate from silicosis than women.
The 2019 Global Burden of Disease Study estimates that more than 12,900 people worldwide die from silicosis each year.
Silicosis has no cure, but it’s preventable when workers have access to proper respiratory protection and are educated on safe practices set by regulatory bodies such as the U.S. National Institute for Occupational Safety and Health. The European Network on Silica also has guidelines on handling and using materials containing silica. A March 2023 study published in Environmental Science and Pollution Research International finds that “education, training, and marketing strategies improve respirator use, while training and education motivate workers to use dust control measures.”
Silicosis symptoms and treatment
Symptoms of silicosis include cough, fatigue, shortness of breath and chest pain. There’s no specific test for silicosis. The first signs may show in an abnormal chest X-ray and a slowly developing cough, according to the American Lung Association.
Silicosis symptoms don’t appear right away in most cases, usually taking several years to develop working with silica dust. However, studies indicate that symptoms of silicosis due to exposure to artificial stone appear quicker than exposure to natural silica sources, potentially due to the higher concentration of silica in artificial stone.
There are three types of silicosis: acute (most commonly caused by working with artificial stone), accelerated and chronic, depending on the level of exposure to silica dust, according to the Centers for Disease Control and Prevention, which explains the severity of each type on its website.
Complications from silicosis can include tuberculosis, lung cancer, chronic bronchitis, kidney disease and autoimmune disorders. In some cases, silicosis can cause severe scarring of the lung tissue, leading to a condition called progressive massive fibrosis, or PMF. Some patients may require a lung transplant.
Lung damage from silicosis is irreversible, so treatment of silicosis is aimed at slowing down the disease and relieving its symptoms.
In 1995, the World Health Organization called for the elimination of silicosis by 2030, but research studies and news stories show it remains a threat to many workers.
Below, we have gathered several studies on the topic to help journalists bolster their reporting with academic research.
Research roundup
Artificial Stone Associated Silicosis: A Systematic Review
Veruscka Leso, et al. International Journal of Environmental Research and Public Health, February 2019.This systematic review aims to verify the association between exposure to silica dust in artificial stone and the development of silicosis.
Researchers narrowed down their selection from 75 papers to seven studies that met their inclusion criteria. The seven studies were from Australia, Israel and Spain. Most of the studies are observational and impede a definite association between exposure to silica while working with artificial stone and developing silicosis, the authors note.
However, “the unusually high incidence of the disease that was reported over short periods of investigations, and the comparable occupational histories of affected workers, all being involved in the manufacture and manipulation of engineered stones, may indicate a cause-effect relationship of this type.”
The review of studies reveals a lack of basic preventive measures such as lack of access to disposable masks; lack of information and training on the dangers of silica dust; and lack of periodic medical examinations, including a chest X-ray, among workers. There was limited environmental monitoring of dust levels at the workplace. Also, there was no dust suppression system, such as the use of water when polishing the stones, or effective ventilation. Machinery and tools weren’t properly set up and didn’t undergo routine checks, the authors write.
The authors recommend environmental monitoring for assessing silica levels in the workplace and verifying the effectiveness of personal protections. They also recommend the health surveillance of workers exposed to silica dust.
“Stakeholders, manufacturers, occupational risk prevention services, insurance companies for occupational accidents and diseases, business owners, occupational health physicians, general practitioners, and also employees should be engaged, not only in designing/planning processes and operational working environments, but also in assessing the global applicability of proactive preventive and protective measures to identify and control crystalline silica exposure, especially in new and unexpected exposure scenarios, the full extent of which cannot yet be accurately predicted,” they write.
Silica-Related Diseases in the Modern World
Ryan F. Hoy and Daniel C. Chambers. Allergy, November 2020.The study is a review of the mineralogy of silica, epidemiology, clinical and radiological features of the various forms of silicosis and other diseases associated with exposure to silica.
The primary factor associated with the development of silicosis is the intensity and duration of cumulative exposure to silica dust. Most countries regulate silica dust occupational exposure limits, generally in the range of 0.05 mg/m3 to 0.1 mg/m3, although the risk of dust exposure to workers still remains high at those levels.
The study provides a list of activities that could expose workers to silica dust. They include abrasive blasting of sand and sandstone; cement and brick manufacturing; mixing, glazing or sculpting of china, ceramic and pottery; construction involving bricklaying, concrete cutting, paving and demolition; sandblasting denim jeans; working with and polishing dental materials; mining and related milling; handling raw material during paint manufacturing; road and highway construction and repair; soap and cosmetic production; blasting and drilling tunnels; and waste incineration.
“Despite the large number of workers in the construction sector, there have been few studies of [silica dust] exposure in this industry,” the authors note.
Other than silicosis, conditions associated with silica exposure include sarcoidosis, an inflammatory disease that commonly affects the lungs and lymph nodes, autoimmune disease, lung cancer and pulmonary infections.
“Recent outbreaks of silica-associated disease highlight the need for constant vigilance to identify and control new and well-established sources of silica exposure. While there are currently no effective treatments for silicosis, it is a completely preventable lung disease,” the authors write.
A Systematic Review of the Effectiveness of Dust Control Measures Adopted to Reduce Workplace Exposure
Frederick Anlimah, Vinod Gopaldasani, Catherine MacPhail and Brian Davies. Environmental Science and Pollution Research International, March 2023.This study provides an overview of various interventions and their effectiveness in preventing exposure to silica dust based on a review of 133 studies from 16 countries, including the U.S., Canada, China, India, Taiwan and Australia, and published between 2010 and 2020.
These dust control measures range from simple work practices such as the use of respirators to more sophisticated technologies, such as water and air curtains and foam technology, the authors note.
The review finds increasing research interest in dust reduction, mainly in China. But overall, regulatory influence remains inadequate in preventing miners’ exposure to silica dust.
“Results from the review suggest that adopted interventions increase knowledge, awareness, and attitudes about respirator usage and generate positive perceptions about respirator usage while reducing misconceptions,” the authors write. “Interventions can increase the use, proper use, and frequency of use of respirators and the adoption readiness for dust controls but may not provide sustained motivation in workers for the continual use of dust controls or [personal protective equipment.]”
Notes from the Field: Surveillance of Silicosis Using Electronic Case Reporting — California, December 2022–July 2023
Jennifer Flattery, et al. Morbidity and Mortality Weekly Report, November 2023.This study examines the use of electronic case reporting to identify silicosis cases in California. Electronic case reporting, or eCR, is the automated, real-time exchange of case report information between electronic health records at health facilities at state and local public health agencies in the U.S. It is a joint effort between the Association of Public Health Laboratories, the Council of State and Territorial Epidemiologists, and the CDC. Currently, 208 health conditions can be reported using eCR. All 50 states and other U.S.-affiliated jurisdictions are connected to eCR. Once a public health agency receives a case report, it reaches out to the patient for contact tracing or other actions.
From October 2022 to July 2023, the California Department of Public Health received initial silicosis case reports for 41 individuals. A review of medical records confirmed 19 cases and 16 probable cases. Six of the 41 cases were considered unlikely to be silicosis after a review of medical records.
Notably, engineered stone countertop fabrication was a significant source of exposure, especially among Hispanic and Latino workers.
At least seven of the 19 confirmed cases were associated with the fabrication of engineered stone — quartz — countertops. The 19 patients’ ages ranged from 33 to 51 and all were Hispanic or Latino. One patient died and two had both lungs replaced. One was evaluated for a lung transplant.
The median age of the 35 patients with probable or confirmed silicosis was 65, ranging from 33 to 89 years, and 91% were men.
“It is important that health care providers routinely ask patients about their work as an important determinant of health,” the authors write. “Being aware of the risks associated with work exposures, as well as the regulations, medical monitoring, and prevention strategies that address those risks can help guide patient care.”
Additional research
Understanding the Pathogenesis of Engineered Stone-Associated Silicosis: The Effect of Particle Chemistry on the Lung Cell Response
Chandnee Ramkissoon, et al. Respirology, December 2023.Silicosis, Tuberculosis and Silica Exposure Among Artisanal and Small-Scale Miners: A Systematic Review and Modelling Paper
Patrick Howlett, et al. PLOS Global Public Health, September 2023.Silicosis Among Immigrant Engineered Stone (Quartz) Countertop Fabrication Workers in California
Jane C. Fazio, et al. JAMA Internal Medicine, July 2023.Silicosis and Tuberculosis: A Systematic Review and Meta-Analysis
P. Jamshidi, et al. Pulmonology, June 2023.From Basic Research to Clinical Practice: Considerations for Treatment Drugs for Silicosis
Rou Li, Huimin Kang and Shi Chen. International Journal of Molecular Science, May 2023.Silicosis After Short-Term Exposure
J. Nowak-Pasternak, A. Lipińska-Ojrzanowska and B. Świątkowska. Occupational Medicine, January 2023.Occupational Silica Exposure and Dose-Response for Related Disorders—Silicosis, Pulmonary TB, AIDs and Renal Diseases: Results of a 15-Year Israeli Surveillance
Rachel Raanan, et al. International Journal of Environmental Research and Public Health, November 2022.Demographic, Exposure and Clinical Characteristics in a Multinational Registry of Engineered Stone Workers with Silicosis
Jeremy Tang Hua, et al. Occupational & Environmental Medicine, August 2022.Current Global Perspectives on Silicosis — Convergence of Old and Newly Emergent Hazards
Ryan F. Hoy, et al. Respirology, March 2022.The Association Between Silica Exposure, Silicosis and Tuberculosis: A systematic Review and Metal-Analysis
Rodney Ehrlich, Paula Akugizibwe, Nandi Siegfried and David Rees. BMC Public Health, May 2021.Silicosis, Progressive Massive Fibrosis and Silico-Tuberculosis Among Workers with Occupational Exposure to Silica Dusts in Sandstone Mines of Rajasthan State
Subroto Nandi, Sarang Dhatrak, Kamalesh Sarkar. Journal of Family Medicine and Primary Care, February 2021.Artificial Stone Silicosis: Rapid Progression Following Exposure Cessation
Antonio León-Jiménez, et al. Chest, September 2020.Silica-Associated Lung Disease: An Old-World Exposure in Modern Industries
Hayley Barnes, Nicole S.L. Goh, Tracy L. Leong and Ryan Hoy. Respirology, September 2019.Australia Reports on Audit of Silicosis for Stonecutters
Tony Kirby. The Lancet, March 2019.Artificial Stone-Associated Silicosis: A Rapidly Emerging Occupational Lung Disease
Ryan F. Hoy, et al. Occupational & Environmental Medicine, December 2017.This article first appeared on The Journalist’s Resource and is republished here under a Creative Commons license.
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