Can You Repair Your Own Teeth At Home?

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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 liked your article on tooth remineralization, I saw a “home tooth repair kit”, and wondered if it is as good as what dentists do, or at least will do the job well enough to save a dentist visit?❞

Firstly, for any wondering about the tooth remineralization, here you go:

Tooth Remineralization: How To Heal Your Teeth Naturally

Now, to answer your question, we presume you are talking about something like this kit available on Amazon. In which case, some things to bear in mind:

  • This kind of thing is generally intended as a stop-gap measure until you see a dentist, because you cracked your tooth or lost a filling or something today, and will see the dentist next week, say.
  • This kind of thing is not what Dr. Michelle Jorgensen was talking about in another video* that we wrote about; rather, it is using a polymer filler to rebuild what is missing. The key difference is: this is using plastic, which is not what your teeth are made of, so it will never “take” as part of the tooth, as some biomimetic dentistry options can do.
  • Yes, this does also mean you are putting microplastics (because the powder is usually micronized polymer beads with zinc oxide, to which you add a liquid to create a paste that will set) in your mouth and quite possibly right next to an open blood supply depending on what’s damaged and whether capillaries were reaching it.
  • Because of the different material and application method, the adhesion is nothing like professional fillings (be they metal or resin), and thus the chances of it coming out again or so high that it’s more a question of when, rather than if.
  • If you have damage under there (as we presume you do in any scenario where you are using this), then if it’s not professionally cleaned before the filling goes in, then it can get infected, and (less dramatically, but still importantly) any extant decay can also get worse. We say “professionally”, because you will not be able to do an adequate job with your toothbrush, floss, etc at home, and even if you got dentist’s tools (which you can buy, by the way, but we don’t recommend), you will no more be able to do the same quality job as a dentist who has done that many times a day every day for the past 20 years, as buying expensive paintbrushes would make you able to restore a Renaissance painting without messing it up.

*See: Dangers Of Root Canals And Crowns, & What To Do Instead ← what she recommends instead is biomimetic dentistry, which is also more prosaically called “conservative restorative dentistry”, i.e. it tries to conserve as much as possible, replace lost material on a like-for-like basis, and generally end up with a result that’s as close to natural as possible.

In other words, the short answer to your question is “no, sorry, it isn’t and it won’t”

However! A just like it’s good to have a first aid kit in the house even if it won’t do the same job as an ambulance crew, it can be good to have a tooth repair kit (essentially, a tooth first-aid kit) in the house, precisely to use it just as a stop-gap measure in the event that you one day crack a tooth or lose a filling or such, and don’t want to leave it open to all things in the meantime.

(The results of this sort of kit are so not long-term in nature that it will be quick and easy for your dentist to remove it to do their own job once you get there)

If in doubt, always see your dentist as soon as possible, as many things are a lot less work to treat now, than to treat later. Just, make sure to advocate for yourself and what you actually want/need, and don’t let them upsell you on something you didn’t come in for while you’re sitting in their chair—that’s a conversation to be had in advance with a clear head and no pressure (and nobody’s hands in your mouth)!

See also: Dentists Are Pulling ‘Healthy’ and Treatable Teeth To Profit From Implants, Experts Warn

Take care!

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  • ‘Emergency’ or Not, Covid Is Still Killing People. Here’s What Doctors Advise to Stay Safe.

    10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.

    With around 20,000 people dying of covid in the United States since the start of October, and tens of thousands more abroad, the covid pandemic clearly isn’t over. However, the crisis response is, since the World Health Organization and the Biden administration ended their declared health emergencies last year.

    Let’s not confuse the terms “pandemic” and “emergency.” As Abraar Karan, an infectious disease physician and researcher at Stanford University, said, “The pandemic is over until you are scrunched in bed, feeling terrible.”

    Pandemics are defined by neither time nor severity, but rather by large numbers of ongoing infections worldwide. Emergencies are acute and declared to trigger an urgent response. Ending the official emergency shifted the responsibility for curbing covid from leaders to the public. In the United States, it meant, for example, that the government largely stopped covering the cost of covid tests and vaccines.

    But the virus is still infecting people; indeed, it is surging right now.

    With changes in the nature of the pandemic and the response, KFF Health News spoke with doctors and researchers about how to best handle covid, influenza, and other respiratory ailments spreading this season.

    A holiday wave of sickness has ensued as expected. Covid infections have escalated nationwide in the past few weeks, with analyses of virus traces in wastewater suggesting infection rates as high as last year’s. More than 73,000 people died of covid in the U.S. in 2023, meaning the virus remains deadlier than car accidents and influenza. Still, compared with last year’s seasonal surge, this winter’s wave of covid hospitalizations has been lower and death rates less than half.

    “We’re seeing outbreaks in homeless shelters and in nursing homes, but hospitals aren’t overwhelmed like they have been in the past,” said Salvador Sandoval, a doctor and health officer at the Merced County public health department in California. He attributes that welcome fact to vaccination, covid treatments like Paxlovid, and a degree of immunity from prior infections.

    While a new coronavirus variant, JN.1, has spread around the world, the current vaccines and covid tests remain effective.

    Other seasonal illnesses are surging, too, but rates are consistent with those of previous years. Between 9,400 and 28,000 people died from influenza from Oct. 1 to Jan. 6, estimates the Centers for Disease Control and Prevention, and millions felt so ill from the flu that they sought medical care. Cases of pneumonia — a serious condition marked by inflamed lungs that can be triggered by the flu, covid, or other infections — also predictably rose as winter set in. Researchers are now less concerned about flare-ups of pneumonia in China, Denmark, and France in November and December, because they fit cyclical patterns of the pneumonia-causing bacteria Mycoplasma pneumoniae rather than outbreaks of a dangerous new bug.

    Public health researchers recommend following the CDC guidance on getting the latest covid and influenza vaccines to ward off hospitalization and death from the diseases and reduce chances of getting sick. A recent review of studies that included 614,000 people found that those who received two covid vaccines were also less likely to develop long covid; often involving fatigue, cognitive dysfunction, and joint pain, the condition is marked by the development or continuation of symptoms a few months after an infection and has been debilitating for millions of people. Another analysis found that people who had three doses of covid vaccines were much less likely to have long covid than those who were unvaccinated. (A caveat, however, is that those with three doses might have taken additional measures to avoid infections than those who chose to go without.)

    It’s not too late for an influenza vaccine, either, said Helen Chu, a doctor and epidemiologist at the University of Washington in Seattle. Influenza continues to rise into the new year, especially in Southern states and California. Last season’s shot appeared to reduce adults’ risk of visits to the emergency room and urgent care by almost half and hospitalization by more than a third. Meanwhile, another seasonal illness with a fresh set of vaccines released last year, respiratory syncytial virus, appears to be waning this month.

    Another powerful way to prevent covid, influenza, common colds, and other airborne infections is by wearing an N95 mask. Many researchers say they’ve returned to socializing without one but opt for the masks in crowded, indoor places when wearing one would not be particularly burdensome. Karan, for example, wears his favorite N95 masks on airplanes. And don’t forget good, old-fashioned hand-washing, which helps prevent infections as well.

    If you do all that and still feel sick? Researchers say they reach for rapid covid tests. While they’ve never been perfect, they’re often quite helpful in guiding a person’s next steps.

    When President Joe Biden declared the end of the public health emergency last year, many federally funded testing sites that sent samples to laboratories shut their doors. As a result, people now mainly turn to home covid tests that signal an infection within 15 minutes and cost around $6 to $8 each at many pharmacies. The trick is to use these tests correctly by taking more than one when there’s reason for concern. They miss early infections more often than tests processed in a lab, because higher levels of the coronavirus are required for detection — and the virus takes time to multiply in the body. For this reason, Karan considers other information. “If I ran into someone who turned out to be sick, and then I get symptoms a few days later,” he said, “the chance is high that I have whatever they had, even if a test is negative.”

    A negative result with a rapid test might mean simply that an infection hasn’t progressed enough to be detected, that the test had expired, or that it was conducted wrong. To be sure the culprit behind symptoms like a sore throat isn’t covid, researchers suggest testing again in a day or two. It often takes about three days after symptoms start for a test to register as positive, said Karan, adding that such time estimates are based on averages and that individuals may deviate from the norm.

    If a person feels healthy and wants to know their status because they were around someone with covid, Karan recommends testing two to four days after the exposure. To protect others during those uncertain days, the person can wear an N95 mask that blocks the spread of the virus. If tests remain negative five days after an exposure and the person still feels fine, Chu said, they’re unlikely to be infected — and, if they are, viral levels would be so low that they would be unlikely to pass the disease to others.

    Positive tests, on the other hand, reliably flag an infection. In this case, people can ask a doctor whether they qualify for the antiviral drug Paxlovid. The pills work best when taken immediately after symptoms begin so that they slash levels of the virus before it damages the body. Some studies suggest the medicine reduces a person’s risk of long covid, too, but the evidence is mixed. Another note on tests: Don’t worry if they continue to turn out positive for longer than symptoms last; the virus may linger even if it’s no longer replicating. After roughly a week since a positive test or symptoms, studies suggest, a person is unlikely to pass the virus to others.

    If covid is ruled out, Karan recommends tests for influenza because they can guide doctors on whether to prescribe an antiviral to fight it — or if instead it’s a bacterial infection, in which case antibiotics may be in order. (One new home test diagnoses covid and influenza at the same time.) Whereas antivirals and antibiotics target the source of the ailment, over-the-counter medications may soothe congestion, coughs, fevers, and other symptoms. That said, the FDA recently determined that a main ingredient in versions of Sudafed, NyQuil, and other decongestants, called phenylephrine, is ineffective.

    Jobs complicate a personal approach to staying healthy. Emergency-era business closures have ended, and mandates on vaccination and wearing masks have receded across the country. Some managers take precautions to protect their staff. Chu, for example, keeps air-purifying devices around her lab, and she asks researchers to stay home when they feel sick and to test themselves for covid before returning to work after a trip.

    However, occupational safety experts note that many employees face risks they cannot control because decisions on if and how to protect against outbreaks, such as through ventilation, testing, and masking, are left to employers. Notably, people with low-wage and part-time jobs — occupations disproportionately held by people of color — are often least able to control their workplace environments.

    Jessica Martinez, co-executive director of the National Council for Occupational Safety and Health, said the lack of national occupational standards around airborne disease protection represents a fatal flaw in the Biden administration’s decision to relinquish its control of the pandemic.

    “Every workplace needs to have a plan for reducing the threat of infectious disease,” she said. “If you only focus on the individual, you fail workers.”

    KFF Health News is a national newsroom that produces in-depth journalism about health issues and is one of the core operating programs at KFF—an independent source of health policy research, polling, and journalism. Learn more about KFF.

    Subscribe to KFF Health News’ free Morning Briefing.

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  • Their First Baby Came With Medical Debt. These Illinois Parents Won’t Have Another.

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    JACKSONVILLE, Ill. — Heather Crivilare was a month from her due date when she was rushed to an operating room for an emergency cesarean section.

    The first-time mother, a high school teacher in rural Illinois, had developed high blood pressure, a sometimes life-threatening condition in pregnancy that prompted doctors to hospitalize her. Then Crivilare’s blood pressure spiked, and the baby’s heart rate dropped. “It was terrifying,” Crivilare said.

    She gave birth to a healthy daughter. What followed, though, was another ordeal: thousands of dollars in medical debt that sent Crivilare and her husband scrambling for nearly a year to keep collectors at bay.

    The Crivilares would eventually get on nine payment plans as they juggled close to $5,000 in bills.

    “It really felt like a full-time job some days,” Crivilare recalled. “Getting the baby down to sleep and then getting on the phone. I’d set up one payment plan, and then a new bill would come that afternoon. And I’d have to set up another one.”

    Crivilare’s pregnancy may have been more dramatic than most. But for millions of new parents, medical debt is now as much a hallmark of having children as long nights and dirty diapers.

    About 12% of the 100 million U.S. adults with health care debt attribute at least some of it to pregnancy or childbirth, according to a KFF poll.

    These people are more likely to report they’ve had to take on extra work, change their living situation, or make other sacrifices.

    Overall, women between 18 and 35 who have had a baby in the past year and a half are twice as likely to have medical debt as women of the same age who haven’t given birth recently, other KFF research conducted for this project found.

    “You feel bad for the patient because you know that they want the best for their pregnancy,” said Eilean Attwood, a Rhode Island OB-GYN who said she routinely sees pregnant women anxious about going into debt.

    “So often, they may be coming to the office or the hospital with preexisting debt from school, from other financial pressures of starting adult life,” Attwood said. “They are having to make real choices, and what those real choices may entail can include the choice to not get certain services or medications or what may be needed for the care of themselves or their fetus.”

    Best-Laid Plans

    Crivilare and her husband, Andrew, also a teacher, anticipated some of the costs.

    The young couple settled in Jacksonville, in part because the farming community less than two hours north of St. Louis was the kind of place two public school teachers could afford a house. They saved aggressively. They bought life insurance.

    And before Crivilare got pregnant in 2021, they enrolled in the most robust health insurance plan they could, paying higher premiums to minimize their deductible and out-of-pocket costs.

    Then, two months before their baby was due, Crivilare learned she had developed preeclampsia. Her pregnancy would no longer be routine. Crivilare was put on blood pressure medication, and doctors at the local hospital recommended bed rest at a larger medical center in Springfield, about 35 miles away.

    “I remember thinking when they insisted that I ride an ambulance from Jacksonville to Springfield … ‘I’m never going to financially recover from this,’” she said. “‘But I want my baby to be OK.’”

    For weeks, Crivilare remained in the hospital alone as covid protocols limited visitors. Meanwhile, doctors steadily upped her medications while monitoring the fetus. It was, she said, “the scariest month of my life.”

    Fear turned to relief after her daughter, Rita, was born. The baby was small and had to spend nearly two weeks in the neonatal intensive care unit. But there were no complications. “We were incredibly lucky,” Crivilare said.

    When she and Rita finally came home, a stack of medical bills awaited. One was already past due.

    Crivilare rushed to set up payment plans with the hospitals in Jacksonville and Springfield, as well as the anesthesiologist, the surgeon, and the labs. Some providers demanded hundreds of dollars a month. Some settled for monthly payments of $20 or $25. Some pushed Crivilare to apply for new credit cards to pay the bills.

    “It was a blur of just being on the phone constantly with all the different people collecting money,” she recalled. “That was a nightmare.”

    Big Bills, Big Consequences

    The Crivilares’ bills weren’t unusual. Parents with private health coverage now face on average more than $3,000 in medical bills related to a pregnancy and childbirth that aren’t covered by insurance, researchers at the University of Michigan found.

    Out-of-pocket costs are even higher for families with a newborn who needs to stay in a neonatal ICU, averaging $5,000. And for 1 in 11 of these families, medical bills related to pregnancy and childbirth exceed $10,000, the researchers found.

    “This forces very difficult trade-offs for families,” said Michelle Moniz, a University of Michigan OB-GYN who worked on the study. “Even though they have insurance, they still have these very high bills.”

    Nationwide polls suggest millions of these families end up in debt, with sometimes devastating consequences.

    About three-quarters of U.S. adults with debt related to pregnancy or childbirth have cut spending on food, clothing, or other essentials, KFF polling found.

    About half have put off buying a home or delayed their own or their children’s education.

    These burdens have spurred calls to limit what families must pay out-of-pocket for medical care related to pregnancy and childbirth.

    In Massachusetts, state Sen. Cindy Friedman has proposed legislation to exempt all these bills from copays, deductibles, and other cost sharing. This would parallel federal rules that require health plans to cover recommended preventive services like annual physicals without cost sharing for patients. “We want … healthy children, and that starts with healthy mothers,” Friedman said. Massachusetts health insurers have warned the proposal will raise costs, but an independent state analysis estimated the bill would add only $1.24 to monthly insurance premiums.

    Tough Lessons

    For her part, Crivilare said she wishes new parents could catch their breath before paying down medical debt.

    “No one is in the right frame of mind to deal with that when they have a new baby,” she said, noting that college graduates get such a break. “When I graduated with my college degree, it was like: ‘Hey, new adult, it’s going to take you six months to kind of figure out your life, so we’ll give you this six-month grace period before your student loans kick in and you can get a job.’”

    Rita is now 2. The family scraped by on their payment plans, retiring the medical debt within a year, with help from Crivilare’s side job selling resources for teachers online.

    But they are now back in debt, after Rita’s recurrent ear infections required surgery last year, leaving the family with thousands of dollars in new medical bills.

    Crivilare said the stress has made her think twice about seeing a doctor, even for Rita. And, she added, she and her husband have decided their family is complete.

    “It’s not for us to have another child,” she said. “I just hope that we can put some of these big bills behind us and give [Rita] the life that we want to give her.”

    About This Project

    “Diagnosis: Debt” is a reporting partnership between KFF Health News and NPR exploring the scale, impact, and causes of medical debt in America.

    The series draws on original polling by KFF, court records, federal data on hospital finances, contracts obtained through public records requests, data on international health systems, and a yearlong investigation into the financial assistance and collection policies of more than 500 hospitals across the country. 

    Additional research was conducted by the Urban Institute, which analyzed credit bureau and other demographic data on poverty, race, and health status for KFF Health News to explore where medical debt is concentrated in the U.S. and what factors are associated with high debt levels.

    The JPMorgan Chase Institute analyzed records from a sampling of Chase credit card holders to look at how customers’ balances may be affected by major medical expenses. And the CED Project, a Denver nonprofit, worked with KFF Health News on a survey of its clients to explore links between medical debt and housing instability. 

    KFF Health News journalists worked with KFF public opinion researchers to design and analyze the “KFF Health Care Debt Survey.” The survey was conducted Feb. 25 through March 20, 2022, online and via telephone, in English and Spanish, among a nationally representative sample of 2,375 U.S. adults, including 1,292 adults with current health care debt and 382 adults who had health care debt in the past five years. The margin of sampling error is plus or minus 3 percentage points for the full sample and 3 percentage points for those with current debt. For results based on subgroups, the margin of sampling error may be higher.

    Reporters from KFF Health News and NPR also conducted hundreds of interviews with patients across the country; spoke with physicians, health industry leaders, consumer advocates, debt lawyers, and researchers; and reviewed scores of studies and surveys about medical debt.

    KFF Health News is a national newsroom that produces in-depth journalism about health issues and is one of the core operating programs at KFF—an independent source of health policy research, polling, and journalism. Learn more about KFF.

    Subscribe to KFF Health News’ free Morning Briefing.

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  • What Too Much Exercise Does To Your Body And Brain

    10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.

    “Get more exercise” is a common rallying-cry for good health, but it is possible to overdo it. And, this is not just a matter of extreme cases of “exercise addiction”, but even going much above certain limits can already result in sabotaging one’s healthy gains. But how, and where does the line get drawn?

    Too Much Of A Good Thing

    The famous 150 minutes per week of moderate exercise (or 75 minutes of intense exercise) is an oft-touted figure. This video, on the other hand, springs for 5 hours of moderate exercise or 2.5 hours intense exercise as a good guideline.

    We’re advised that going over those guidelines doesn’t necessarily increase health benefits, and on the contrary, may reduce or even reverse them. For example, we are told…

    • Light to moderate running reduces the risk of death, but running intensely more than 3 times a week can negate these benefits.
    • Extreme endurance exercises, like ultra-marathons, may cause heart damage, heart rhythm disorders, and artery enlargement.
    • Women who exercise strenuously every day have a higher risk of heart attacks and strokes compared to those who exercise moderately.
    • Excessive exercise in women can lead to the “female athlete triad” (loss of menstruation, osteoporosis, and eating disorders).
    • In men, intense exercise can lower libido due to fatigue and reduced testosterone levels.
    • Both men and women are at increased risk of overuse injuries (e.g., tendinitis, stress fractures) and impaired immunity from excessive exercise.
    • There is a 72-hour window of impaired immunity after intense exercise, increasing the risk of infections.

    Exercise addiction is rare, though, with this video citing “around 1 million people in the US suffer from exercise addiction”.

    For more on finding the right balance, enjoy:

    Click Here If The Embedded Video Doesn’t Load Automatically!

    Want to learn more?

    You might also like to read:

    Take care!

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Related Posts

  • Eyes for Alzheimer’s Diagnosis: New?
  • How Science News Outlets Can Lie To You (Yes, Even If They Cite Studies!)

    10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.

    Each Monday, we’re going to be bringing you cutting-edge research reviews to not only make your health and productivity crazy simple, but also, constantly up-to-date.

    But today, in this special edition, we want to lay out plain and simple how to see through a lot of the tricks used not just by popular news outlets, but even sometimes the research publications themselves.

    That way, when we give you health-related science news, you won’t have to take our word for it, because you’ll be able to see whether the studies we cite really support the claims we make.

    Of course, we’ll always give you the best, most honest information we have… But the point is that you shouldn’t have to trust us! So, buckle in for today’s special edition, and never have to blindly believe sci-hub (or Snopes!) again.

    The above now-famous Tumblr post that became a meme is a popular and obvious example of how statistics can be misleading, either by error or by deliberate spin.

    But what sort of mistakes and misrepresentations are we most likely to find in real research?

    Spin Bias

    Perhaps most common in popular media reporting of science, the Spin Bias hinges on the fact that most people perceive numbers in a very “fuzzy logic” sort of way. Do you?

    Try this:

    • A million seconds is 11.5 days
    • A billion seconds is not weeks, but 13.2 months!

    …just kidding, it’s actually nearly thirty-two years.

    Did the months figure seem reasonable to you, though? If so, this is the same kind of “human brains don’t do large numbers” problem that occurs when looking at statistics.

    Let’s have a look at reporting on statistically unlikely side effects for vaccines, as an example:

    • “966 people in the US died after receiving this vaccine!” (So many! So risky!)
    • “Fewer than 3 people per million died after receiving this vaccine!” (Hmm, I wonder if it is worth it?)
    • “Half of unvaccinated people with this disease die of it” (Oh)

    How to check for this: ask yourself “is what’s being described as very common really very common?”. To keep with the spiders theme, there are many (usually outright made-up) stats thrown around on social media about how near the nearest spider is at any given time. Apply this kind of thinking to medical conditions.. If something affects only 1% of the population (So few! What a tiny number!), how far would you have to go to find someone with that condition? The end of your street, perhaps?

    Selection/Sampling Bias

    Diabetes disproportionately affects black people, but diabetes research disproportionately focuses on white people with diabetes. There are many possible reasons for this, the most obvious being systemic/institutional racism. For example, advertisements for clinical trial volunteer opportunities might appear more frequently amongst a convenient, nearby, mostly-white student body. The selection bias, therefore, made the study much less reliable.

    Alternatively: a researcher is conducting a study on depression, and advertises for research subjects. He struggles to get a large enough sample size, because depressed people are less likely to respond, but eventually gets enough. Little does he know, even the most depressed of his subjects are relatively happy and healthy compared with the silent majority of depressed people who didn’t respond.

    See This And Many More Educational Cartoons At Sketchplanations.com!

    How to check for this: Does the “method” section of the scientific article describe how they took pains to make sure their sample was representative of the relevant population, and how did they decide what the relevant population was?

    Publication Bias

    Scientific publications will tend to prioritise statistical significance. Which seems great, right? We want statistically significant studies… don’t we?

    We do, but: usually, in science, we consider something “statistically significant” when it hits the magical marker of p=0.05 (in other words, the probability of getting that result is 1/20, and the results are reliably coming back on the right side of that marker).

    However, this can result in the clinic stopping testing once p=0.05 is reached, because they want to have their paper published. (“Yay, we’ve reached out magical marker and now our paper will be published”)

    So, you can think of publication bias as the tendency for researchers to publish ‘positive’ results.

    If it weren’t for publication bias, we would have a lot more studies that say “we tested this, and here are our results, which didn’t help answer our question at all”—which would be bad for the publication, but good for science, because data is data.

    To put it in non-numerical terms: this is the same misrepresentation as the technically true phrase “when I misplace something, it’s always in the last place I look for it”—obviously it is, because that’s when you stop looking.

    There’s not a good way to check for this, but be sure to check out sample sizes and see that they’re reassuringly large.

    Reporting/Detection/Survivorship Bias

    There’s a famous example of the rise in “popularity” of left-handedness. Whilst Americans born in ~1910 had a bit under a 3.5% chance of being left handed, those born in ~1950 had a bit under a 12% change.

    Why did left-handedness become so much more prevalent all of a sudden, and then plateau at 12%?

    Simple, that’s when schools stopped forcing left-handed children to use their right hands instead.

    In a similar fashion, countries have generally found that homosexuality became a lot more common once decriminalized. Of course the real incidence almost certainly did not change—it just became more visible to research.

    So, these biases are caused when the method of data collection and/or measurement leads to a systematic error in results.

    How to check for this: you’ll need to think this through logically, on a case by case basis. Is there a reason that we might not be seeing or hearing from a certain demographic?

    And perhaps most common of all…

    Confounding Bias

    This is the bias that relates to the well-known idea “correlation ≠ causation”.

    Everyone has heard the funny examples, such as “ice cream sales cause shark attacks” (in reality, both are more likely to happen in similar places and times; when many people are at the beach, for instance).

    How can any research paper possibly screw this one up?

    Often they don’t and it’s a case of Spin Bias (see above), but examples that are not so obviously wrong “by common sense” often fly under the radar:

    “Horse-riding found to be the sport that most extends longevity”

    Should we all take up horse-riding to increase our lifespans? Probably not; the reality is that people who can afford horses can probably afford better than average healthcare, and lead easier, less stressful lives overall. The fact that people with horses typically have wealthier lifestyles than those without, is the confounding variable here.

    See This And Many More Educational Cartoons on XKCD.com!

    In short, when you look at the scientific research papers cited in the articles you read (you do look at the studies, yes?), watch out for these biases that found their way into the research, and you’ll be able to draw your own conclusions, with well-informed confidence, about what the study actually tells us.

    Science shouldn’t be gatekept, and definitely shouldn’t be abused, so the more people who know about these things, the better!

    So…would one of your friends benefit from this knowledge? Forward it to them!

    Don’t Forget…

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  • The Autoimmune Cure – by Dr. Sara Gottfried

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    We’ve featured Dr. Gottfried before, as well as another of her books (“Younger”), and this one’s a little different, and on the one hand very specific, while on the other hand affecting a lot of people.

    You may be thinking, upon reading the subtitle, “this sounds like Dr. Gabor Maté’s ideas” (per: “When The Body Says No”), and 1) you’d be right, and 2) Dr. Gottfried does credit him in the introduction and refers back to his work periodically later.

    What she adds to this, and what makes this book a worthwhile read in addition to Dr. Maté’s, is looking clinically at the interactions of the immune system and nervous system, but also the endocrine system (Dr. Gottfried’s specialty) and the gut.

    Another thing she adds is more of a focus on what she writes about as “little-t trauma”, which is the kind of smaller, yet often cumulative, traumas that often eventually add up over time to present as C-PTSD.

    While “stress increases inflammation” is not a novel idea, Dr. Gottfried takes it further, and looks at a wealth of clinical evidence to demonstrate the series of events that, if oversimplified, seem unbelievable, such as “you had a bad relationship and now you have lupus”—showing evidence for each step in the snowballing process.

    The style is a bit more clinical than most pop-science, but still written to be accessible to laypersons. This means that for most of us, it might not be the quickest read, but it will be an informative and enlightening one.

    In terms of practical use (and living up to its subtitle promise of “cure”), this book does also cover all sorts of potential remedial approaches, from the obvious (diet, sleep, supplements, meditation, etc) to the less obvious (ketamine, psilocybin, MDMA, etc), covering the evidence so far as well as the pros and cons.

    Bottom line: if you have or suspect you may have an autoimmune problem, and/or would just like to nip the risk of such in the bud (especially bearing in mind that the same things cause neuroinflammation and thus, putatively, depression and dementia too), then this is one for you.

    Click here to check out the Autoimmune Cure, and take care of your body and mind!

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  • Eat It! – by Jordan Syatt and Michael Vacanti

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    One of the biggest challenges we often face when undertaking diet and exercise regimes, is the “regime” part. Day one is inspiring, day two is exciting… Day seventeen when one has a headache and some kitchen appliance just broke and one’s preferred exercise gear is in the wash… Not so much.

    Authors Jordan Syatt and Michael Vacanti, therefore, have taken it upon themselves to bring sustainability to us.

    Their main premise is simplicity, but simplicity that works. For example:

    • Having a daily calorie limit, but being ok with guesstimating
    • Weighing regularly, but not worrying about fluctuations (just trends!)
    • Eating what you like, but prioritizing some foods over others
    • Focusing on resistance training, but accessible exercises that work the whole body, instead of “and then 3 sets of 12 reps of these in 6-4-2 progression to exhaustion of the anterior sternocleidomastoid muscle”

    The writing style is simple and clear too, without skimping on the science where science helps explain why something works a certain way.

    Bottom line: this one’s for anyone who would like a strong healthy body, without doing the equivalent of a degree in anatomy and physiology along the way.

    Click here to check out “Eat it!” on Amazon and simplify your diet and exercise plans for great, sustainable progress!

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