
What’s Your Vascular Dementia Risk?
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We often say that “what’s good for your heart is good for your brain”, and this is because the former feeds the latter, with oxygen and nutrients, and also clears away detritus like beta-amyloid (associated with Alzheimer’s) and alpha-synuclein (associated with Parkinson’s).
For more on those, see: How To Clean Your Brain (Glymphatic Health Primer)
For this reason, there are many risk factors that apply equally cardiovascular disease (CVD), and neurodegenerative diseases like Alzheimer’s and other vascular dementias, as well as stroke risk.
The link between the two has also been studied; recently a team of scienists led by Dr. Anisa Dhana asked the question:
❝What is the association between cardiovascular health (CVH) and biomarkers of neurodegeneration, including neurofilament light chain and total tau?❞
To answer this, they looked at data from more than 10,000 Americans aged 65+; of these, they were able to get serum samples from 5,470 of them, and tested those samples for the biomarkers of neurodegeneration mentioned above.
They then tabulated the results with cardiovascular health scores based on the American Heart Association (AHA)’s “Life’s Simple 7” tool, and found, amongst other things:
- 34.6% of participants carried the APOE e4 allele, a genetic risk factor for Alzheimer’s.
- Higher CVH scores were associated with lower NfL levels, but not with t-tau concentrations.
- APOE e4 carriers with high CVH had significantly lower NfL levels.
- Race did not influence the CVH-NfL relationship.
- Higher CVH was linked to a slower annual increase in NfL levels but did not affect t-tau changes.
- Over 10 years, participants with the lowest CVH scores saw a 7.1% annual increase in NfL levels, while those with the highest CVH scores had a 5.2% annual increase.
- Better CVH is linked to lower serum NfL levels, regardless of age, sex, or race.
- CVH is particularly crucial for APOE e4 carriers
In other words: higher cardiovascular health meant lower markers of neurodegeneration, and this not only still held true for APOE e4 carriers, but also, the benefits actually even more pronounced in those participants.
You may be wondering: “but it said it helped with NfL levels, not t-tau concentrations?” And, indeed, it is so. But this means that the overall neurodegeneration risk is still inversely proportional to cardiovascular health; it just means it’s not a magical panacea and we must still do other things too.
See also: How To Reduce Your Alzheimer’s Risk
And as for the study, you can read the paper itself in full here:
Cardiovascular Health and Biomarkers of Neurodegenerative Disease in Older Adults
Life’s Simple 7
We mentioned that they used the AHA’s “Life’s Simple 7” tool to assess cardiovascular health; it is indeed simple, but important. Here it is:
Metric | Poor | Intermediate | Ideal |
---|---|---|---|
Current smoking | Yes | Former ≤12 mo | Never or quit >12 mo |
BMI, kg/m2 | ≥30 | 25–29.9 | <25 |
Physical activity | None | 1–149 min/wk of moderate activity or 1–74 min/wk of vigorous activity or 1–149 min/wk of moderate and vigorous activity | ≥150 min/wk of moderate activity or ≥75 min/wk of vigorous activity or ≥150 min/wk of moderate and vigorous activity |
Diet pattern score* | 0–1 | 2–3 | 4–5 |
Total cholesterol, mg/dL | ≥240 | 200–239 or treated to goal | <200 |
Blood pressure, mm Hg | SBP ≥140 or DBP ≥90 | SBP 120–139 or DBP 80–89 or treated to goal | <120/<80 |
Fasting plasma glucose, mg/dL | ≥126 | 100–125 or treated to goal | <100 |
*Each of the following 5 diet elements is given a score of 1: (1) ≥4.5 cups/day of fruits and vegetables; (2) ≥2 servings/week of fish; (3) ≥3 servings/day of whole grains; (4) no more than 36 oz/wk of sugar‐sweetened beverages; and (5) no more than 1500 mg/d of sodium.
As the AHA notes,
❝Unfortunately, 99% of the U.S. adult population has at least one of seven cardiovascular health risks: tobacco use,
poor diet, physical inactivity, unhealthy weight, high blood pressure, high cholesterol or high blood glucose.❞
It then goes on to talk about the financial burden of this on employers, but this was taken from a workplace health resource, and we recognize the rest of it won’t be of pressing concern for most of our readers. In case you are interested though, here it is:
American Heart Association | Life’s Simple 7® Journey to Health™
For a more practical (if you’re just a private individual and employee healthcare is not your main concern) overview, see:
Want to know more?
Here are some very good starting points for improving each of those 7 metrics, as necessary:
- Which Addiction-Quitting Methods Work Best?
- How To Lose Weight (Healthily!)
- The Doctor Who Wants Us To Exercise Less, & Move More
- Which Diet? Top Diets Ranked By Experts
- Lower Cholesterol Naturally, Without Statins
- 10 Ways To Lower Blood Pressure Naturally
- 10 Ways To Balance Your Blood Sugars
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People on Ozempic may have fewer heart attacks, strokes and addictions – but more nausea, vomiting and stomach pain
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Ozempic and Wegovy are increasingly available in Australia and worldwide to treat type 2 diabetes and obesity.
The dramatic effects of these drugs, known as GLP-1s, on weight loss have sparked huge public interest in this new treatment option.
However, the risks and benefits are still being actively studied.
In a new study in Nature Medicine, researchers from the United States reviewed health data from about 2.4 million people who have type 2 diabetes, including around 216,000 people who used a GLP-1 drug, between 2017 and 2023.
The researchers compared a range of health outcomes when GLP-1s were added to a person’s treatment plan, versus managing their diabetes in other ways, often using glucose-lowering medications.
Overall, they found people who used GLP-1s were less likely to experience 42 health conditions or adverse health events – but more likely to face 19 others.
myskin/Shutterstock What conditions were less common?
Cardiometabolic conditions
GLP-1 use was associated with fewer serious cardiovascular and coagulation disorders. This includes deep vein thrombosis, pulmonary embolism, stroke, cardiac arrest, heart failure and myocardial infarction.
Neurological and psychiatric conditions
GLP-1 use was associated with fewer reported substance use disorders or addictions, psychotic disorders and seizures.
Infectious conditions
GLP-1 use was associated with fewer bacterial infections and pneumonia.
What conditions were more common?
Gastrointestinal conditions
Consistent with prior studies, GLP-1 use was associated with gastrointestinal conditions such as nausea, vomiting, gastritis, diverticulitis and abdominal pain.
Other adverse effects
Increased risks were seen for conditions such as low blood pressure, syncope (fainting) and arthritis.
People who took Ozempic were more likely to experience stomach upsets than those who used other type 2 diabetes treatments. Douglas Cliff/Shutterstock How robust is this study?
The study used a large and reputable dataset from the US Department of Veterans Affairs. It’s an observational study, meaning the researchers tracked health outcomes over time without changing anyone’s treatment plan.
A strength of the study is it captures data from more than 2.4 million people across more than six years. This is much longer than what is typically feasible in an intervention study.
Observational studies like this are also thought to be more reflective of the “real world”, because participants aren’t asked to follow instructions to change their behaviour in unnatural or forced ways, as they are in intervention studies.
However, this study cannot say for sure that GLP-1 use was the cause of the change in risk of different health outcomes. Such conclusions can only be confidently made from tightly controlled intervention studies, where researchers actively change or control the treatment or behaviour.
The authors note the data used in this study comes from predominantly older, white men so the findings may not apply to other groups.
Also, the large number of participants means that even very small effects can be detected, but they might not actually make a real difference in overall population health.
Observational studies track outcomes over time, but can’t say what caused the changes. Jacob Lund/Shutterstock Other possible reasons for these links
Beyond the effect of GLP-1 in the body, other factors may explain some of the findings in this study. For example, it’s possible that:
- people who used GLP-1 could be more informed about treatment options and more motivated to manage their own health
- people who used GLP-1 may have received it because their health-care team were motivated to offer the latest treatment options, which could lead to better care in other areas that impact the risk of various health outcomes
- people who used GLP-1 may have been able to do so because they lived in metropolitan centres and could afford the medication, as well as other health-promoting services and products, such as gyms, mental health care, or healthy food delivery services.
Did the authors have any conflicts of interest?
Two of the study’s authors declared they were “uncompensated consultants” for Pfizer, a global pharmaceutical company known for developing a wide range of medicines and vaccines. While Pfizer does not currently make readily available GLP-1s such as Ozempic or Wegovy, they are attempting to develop their own GLP-1s, so may benefit from greater demand for these drugs.
This research was funded by the US Department of Veterans Affairs, a government agency that provides a wide range of services to military veterans.
No other competing interests were reported.
Diabetes vs weight-loss treatments
Overall, this study shows people with type 2 diabetes using GLP-1 medication generally have more positive health outcomes than negative health outcomes.
However, the study didn’t include people without type 2 diabetes. More research is needed to understand the effects of these medications in people without diabetes who are using them for other reasons, including weight loss.
While the findings highlight the therapeutic benefits of GLP-1 medications, they also raise important questions about how to manage the potential risks for those who choose to use this medication.
The findings of this study can help many people, including:
- policymakers looking at ways to make GLP-1 medications more widely available for people with various health conditions
- health professionals who have regular discussions with patients considering GLP-1 use
- individuals considering whether a GLP-1 medication is right for them.
Lauren Ball, Professor of Community Health and Wellbeing, The University of Queensland and Emily Burch, Accredited Practising Dietitian and Lecturer, Southern Cross University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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What immunocompromised people want you to know
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While many people in the U.S. have abandoned COVID-19 mitigations like vaccines and masking, the virus remains dangerous for everyone, and some groups face higher risks than others. Immunocompromised people—whose immune systems don’t work as well as they should due to health conditions or medications—are more vulnerable to infection and severe symptoms from the virus.
Public Good News spoke with three immunocompromised people about the steps they take to protect themselves and what they want others to know about caring for each other.
[Editor’s note: The contents of these interviews have been condensed for length.]
PGN: What measures have you been taking to protect yourself since the COVID-19 pandemic began?
Tatum Spears, Virginia
From less than a year old, I had serious, chronic infections and have missed huge chunks of my life. In 2020, I quit my public job, and I have not worked publicly since.
I have a degree in vocal performance and have been singing my whole life, but I haven’t performed publicly since 2019. I feel like a bird without wings. I had to stop traveling. Since no one wears a mask anymore, I can’t go to the movies or social outings or any party.
All my friends live in my phone now. It’s a community of people—a lot of them are immunocompromised or disabled in some way.
There are a good portion of them who just take COVID-19 seriously and want to protect their health, who feel the existential abandonment and the burden of all of this. It’s really isolating having to step back from any sort of social life. I have to assess my risk every single time I leave the house.
Gwendolyn Alyse Bishop, Washington
I was hit by a car when I was very young. I woke up from surgery, and doctors told me I had lost almost all of my spleen. So, I was always the sickest kid in my school.
When COVID-19 hit, I started working from home. At first, I wore cloth masks. I didn’t really learn about KN95 masks until right around the time that COVID-19 disabled me. [Editor’s note: N95 and KN95 masks have been shown to be significantly more effective at preventing the transmission of viral particles than cloth masks.]
I actually don’t get out much anymore because I am disabled by long COVID now, but when I do leave, I wear a respirator in all shared air spaces. My roommate and I have HEPA filters going in every room.And then we test. I have a Pluslife testing dock, and so we keep a weekly testing schedule with that and then test if there are any symptoms. I got reinfected [with COVID-19] last winter, and a Pluslife test helped me catch it early and get Paxlovid. [Editor’s note: Pluslife is a brand of an at-home COVID-19 nucleic acid amplification test, which has been shown to be significantly more effective at detecting COVID-19 than at-home antigen rapid tests.]
Abby Mahler, California
I have lupus, and in 2016, I started taking the drug hydroxychloroquine, which is an immunomodulator. I’m not as immunocompromised as some people, but I certainly don’t have a normal immune system, which has resulted in long-term infections like C. diff.I started masking early. My roommates and I prioritize going outside. We don’t remove our masks inside in public places.
We are in a pod with one other household, and the pod has agreements on the way that we interact with public space. So, we will only unmask with people who have tested ahead of time. We use Metrix, an at-home nucleic acid amplification test.
While it’s not easy and it’s not the life that we had prior to COVID-19’s existence, it is a life that has provided us quite a lot of freedom, in the sense that we are not sick all the time. We are conscientiously making decisions that allow us to have a nice time without a monkey on our backs, which is freeing.
PGN: What do you want people who are not immunocompromised to know?
T.S.: Don’t be afraid to be the only person in a room wearing a mask. Your own health is worth it. And you have to realize how callous [people who don’t wear a mask are] by existing in spaces and breathing [their] air [on immunocompromised people].
People think that vaccines are magic, but vaccines alone are not enough. I would encourage people to look at the Swiss cheese model of risk assessment.
Each slice of Swiss cheese has holes in it in different places, and each layer represents a layer of virus mitigation. One layer is vaccines. Another layer is masks. Then there’s staying home when you’re sick and testing.
G.A.B.: I wish people were masking. I wish people understood how likely it is that they are also now immunocompromised and vulnerable because of the widespread immune dysregulation that COVID-19 is causing. [Editor’s note: Research shows that COVID-19 infections may cause long-term harm to the immune system in some people.]
I want people to be invested in being good community members, and part of that is understanding that COVID-19 hits the poorest the hardest—gig workers, underpaid employees, frontline service workers, people who were already disabled or immunocompromised.
If people want to be good community members, they not only need to protect immunocompromised and disabled people by wearing a mask when they leave their homes, but they also need to actually start taking care of their community members and participating in mutual aid. [Editor’s note: Mutual aid is the exchange of resources and services within a community, such as people sharing extra N95 masks.]
I spend pretty much all of my time working on LongCOVIDAidBot, which promotes mutual aid for people who have been harmed by COVID-19.
A.M.: An important thing to think about when you’re not disabled is that it becomes a state of being for all people, if they’re lucky. You will become disabled, or you will die.
It is a privilege, in my opinion, to become disabled because I can learn different ways of living my life. And being able to see yourself as a body that changes over time, I hope, opens up a way of looking at your body as the porous reality that it is.
Some people think of themselves as being willing to make concessions or change their behavior when immunocompromised people are around, but you don’t always know when someone is immunocompromised.
So, if you’re not willing to change the way that you think about yourself as a person who is susceptible [to illness], then you should change the way that you consider other people around you. Wearing a mask—at the very least in public indoor spaces—means considering the unknown realities of all the people who are interacting with that space.
This article first appeared on Public Good News and is republished here under a Creative Commons license.
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Apricot vs Banana – Which is Healthier?
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Our Verdict
When comparing apricot to banana, we picked the banana.
Why?
Both are great, and it was close!
In terms of macros, apricot has more protein, while banana has more carbs and fiber; both are low glycemic index foods, and we’ll call this category a tie.
In the category of vitamins, apricot has more of vitamins A, C, E, and K, while banana has more of vitamins B1, B2, B3, B5, B6, B7, B9, and choline, giving banana the win by strength of numbers. It’s worth noting though that apricots are one of the best fruits for vitamin A in particular.
When it comes to minerals, apricot has slightly more calcium, iron, and zinc, while banana has a lot more magnesium, manganese, potassium, and selenium, meaning a moderate win for banana here.
Adding up the sections makes for an overall win for banana—but of course, by all means enjoy either or both!
Want to learn more?
You might like to read:
Top 8 Fruits That Prevent & Kill Cancer ← we argue for apricots as bonus number 9 on the list
Take care!
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Kiwi vs Lime – Which is Healthier?
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Our Verdict
When comparing kiwi to lime, we picked the kiwi.
Why?
Looking at the macros first, kiwi has more protein, more carbs, and more fiber. As with most fruits, the fiber is the number we’re most interested in for health purposes; in this case, kiwi is just slightly ahead of lime on all three of those.
In terms of vitamins, kiwi has more of vitamins A, B2, B3, B6, B9, C, E, K, and choline, while lime has a tiny bit more vitamin B5. As in, the vitamin that’s in pretty much anything and is practically impossible to be deficient in unless you are literally starving to death. You may be thinking: aren’t limes a famously good source of vitamin C? And yes, yes they are. But kiwis have >3x more. In other big differences, kiwis also have >6x more vitamin E and >67 times more vitamin K.
When it comes to minerals, kiwi has more calcium, copper, magnesium, manganese, phosphorus, potassium, and zinc, while lime has more iron and selenium. Another easy win for kiwis.
In short: enjoy both; both are good. But kiwis are the more nutritionally dense option by almost every way of measuring it.
Want to learn more?
You might like to read:
Top 8 Fruits That Prevent & Kill Cancer ← kiwi is top of the list; it promotes cancer cell death while sparing healthy cells
Take care!
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Blue Light At Night? Save More Than Just Your Sleep!
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Beating The Insomnia Blues
You previously asked us about recipes for insomnia (or rather, recipes/foods to help with easing insomnia). We delivered!
But we also semi-promised we’d cover a bit more of the general management of insomnia, because while diet’s important, it’s not everything.
Sleep Hygiene
Alright, you probably know this first bit, but we’d be remiss if we didn’t cover it before moving on:
- No caffeine or alcohol before bed
- Ideally: none earlier either, but if you enjoy one or the other or both, we realize an article about sleep hygiene isn’t going to be what changes your mind
- Fresh bedding
- At the very least, fresh pillowcase(s). While washing and drying an entire bedding set constantly may be arduous and wasteful of resources, it never hurts to throw your latest pillowcase(s) in with each load of laundry you happen to do.
- Warm bed, cool room = maximum coziness
- Dark room. Speaking of which…
About That Darkness…
When we say the room should be dark, we really mean it:
- Not dark like “evening mood lighting”, but actually dark.
- Not dark like “in the pale moonlight”, but actually dark.
- Not dark like “apart from the light peeking under the doorway”, but actually dark.
- Not dark like “apart from a few LEDs on electronic devices that are on standby or are charging”, but actually dark.
There are many studies about the impact of blue light on sleep, but here’s one as an example.
If blue light with wavelength between 415 nm and 455 nm (in the visible spectrum) hits the retina, melatonin (the sleep hormone) will be suppressed.
The extent of the suppression is proportional to the amount of blue light. This means that there is a difference between starting at an “artificial daylight” lamp, and having the blue LED of your phone charger showing… but the effect is cumulative.
And it gets worse:
❝This high energy blue light passes through the cornea and lens to the retina causing diseases such as dry eye, cataract, age-related macular degeneration, even stimulating the brain, inhibiting melatonin secretion, and enhancing adrenocortical hormone production, which will destroy the hormonal balance and directly affect sleep quality.❞
Read it in full: Research progress about the effect and prevention of blue light on eyes
See also: Age-related maculopathy and the impact of blue light hazard
So, what this means, if we value our health, is:
- Switch off, or if that’s impractical, cover the lights of electronic devices. This might be as simple as placing your phone face-down rather than face-up, for instance.
- Invest in blackout blinds/curtains (per your preference). Serious ones, like these ← see how they don’t have to be black to be blackout! You don’t have to sacrifice style for function
- If you can’t reasonably do the above, consider a sleep mask. Again, a good one. Not the kind you were given on a flight, or got free with some fluffy handcuffs. We mean a full-blackout sleep mask that’s designed to be comfortable enough to sleep in, like this one.
- If you need to get up to pee or whatever, do like a pirate and keep one eye covered/closed. That way, it’ll remain unaffected by the light. Pirates did it to retain their night vision when switching between being on-deck or below, but you can do it to halve the loss of melatonin.
Lights-Out For Your Brain Too
You can have all the darkness in the world and still not sleep if your mind is racing thinking about:
- your recent day
- your next day
- that conversation you wish had gone differently
- what you really should have done when you were 18
- how you would go about fixing your country’s socio-political and economic woes if you were in charge
- Etc.
We wrote about how to hit pause on all that, in a previous edition of 10almonds.
Check it out: The Off-Button For Your Brain—How to “just say no” to your racing mind (this trick really works)
Sweet dreams!
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- No caffeine or alcohol before bed
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Low-Dose Aspirin & Anemia
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We recently wrote about…
How To Survive A Heart Attack When You’re Alone
…and one of the items was “if you have aspirin readily available, then after calling an ambulance is the time to take it—but don’t exert yourself trying to find some”.
But what of aspirin as a preventative?
Many people take low-dose aspirin daily as a way to reduce the risk of atherothrombosis specifically (and thus, indirectly, they hope to reduce the risk of heart attacks).
The science of how helpful this is both clear and complicated—that is to say, the stats are not ambiguous*, but there are complicating factors of which many people are unaware.
*it will reduce the overall risk of cardiovascular events, but will not affect CVD mortality; in other words, it may improve your recovery from minor cardiac events, but is not likely to save you from major ones.
And also, it has unwanted side effects that can constitute a more relevant threat for many people. We’ll share more on that at the end of today’s article, but first…
A newly identified threat from daily aspirin use
A large (n=313,508) study of older adults (median age 73) were sorted into those who used low-dose aspirin as a preventative, and those who did not.
The primary outcome was incidence of anemia sufficient to require treatment, and the secondary outcome was major bleeding. And, at least 1 in 5 of those who experienced anemia also experienced bleeding.
The bleeding issue was not “newly identified” and will not surprise many people; after all, the very reason that aspirin is taken as a CVD preventative is for its anti-clotting property of allowing blood to flow more freely.
The anemia, however, has been getting increasing scientific scrutiny lately, after long going unnoticed in the wild. Given that anemia also gives the symptom “dizziness”, this is also a significant threat for increasing the incidence of falls in the older population, too, which can of course lead to serious complications and ultimately death.
Here’s the paper itself:
Want to know more?
As promised, here’s what we wrote previously about some of aspirin’s other risks:
Aspirin, CVD Risk, & Potential Counter-Risks
Take care!
Don’t Forget…
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