Eggs: Nutritional Powerhouse or Heart-Health Timebomb?
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Eggs: All Things In Moderation?
We asked you for your (health-related) opinion on eggs. We specified that, for the sake of simplicity, let’s say that they are from happy healthy backyard hens who enjoy a good diet.
Apparently this one wasn’t as controversial as it might have been! We (for myth-busting purposes) try to pick something polarizing and sometimes even contentious for our Friday editions, and pick apart what science lies underneath public perceptions.
However, more than half (in fact, 60%) of the subscribers who voted in the poll voted for “Eggs are nutritionally beneficial as part of a balanced diet”, which very moderate statement is indeed pretty much the global scientific consensus.
Still, we’ve a main feature to write, so let’s look at the science, and what the other 40% had in mind:
Eggs are ruinous to health, especially cardiometabolic health: True or False?
False, per best current science, anyway!
Scientific consensus has changed over the years. We learned about cholesterol, then we learned about different types of cholesterol, and now we’ve even learned about in some instances even elevated levels of “bad” cholesterol aren’t necessarily a cause of cardiometabolic disorders so much as a symptom—especially in women.
Not to derail this main feature about eggs (rather than just cholesterol), but for those who missed it, this is actually really interesting: basically, research (pertaining to the use of statins) has found that in women, higher LDL levels aren’t anywhere near the same kind of risk factor as they are for men, and thus may mean that statins (whose main job is reducing LDL) may be much less helpful for women than for men, and more likely to cause unwanted serious side effects in women.
Check out our previous main feature about this: Statins: His & Hers?
But, for back on topic, several large studies (totalling 177,000 people in long-term studies in 50 countries) found:
❝Results from the three cohorts and from the updated meta-analysis show that moderate egg consumption (up to one egg per day) is not associated with cardiovascular disease risk overall, and is associated with potentially lower cardiovascular disease risk in Asian populations.❞
Egg whites are healthy (protein); egg yolks are not (cholesterol): True or False?
True and False, respectively. That is to say, egg whites are healthy (protein), and egg yolks are also healthy (many nutrients).
We talked a bit already about cholesterol, so we’ll not rehash that here. As to the rest:
Eggs are one of the most nutritionally dense foods around. After all, they have everything required to allow a cluster of cells to become a whole baby chick. That’s a lot of body-building!
They’re even more nutritionally heavy-hitters if you get omega-3 enriched eggs, which means the hens were fed extra omega-3, usually in the form of flax seeds.
Also, free-range is better healthwise than others. Do bear in mind that unless they really are from your backyard, or a neighbor’s, chances are that the reality is not what the advertising depicts, though. There are industry minimum standards to be able to advertise as “free-range”, and those standards are a) quite low b) often ignored, because an occasional fine is cheaper than maintaining good conditions.
So if you can look after your own hens, or get them from somewhere that you can see for yourself how they are looked after, so much the better!
Check out the differences side-by-side, though:
Pastured vs Omega-3 vs “Conventional” Eggs: What’s the Difference?
Stallone-style 12-egg smoothies are healthy: True or False?
False, at least if taken with any regularity. One can indeed have too much of a good thing.
So, what’s the “right amount” to eat?
It may vary depending on individual factors (including age and ethnicity), but a good average, according to science, is to keep it to 3 eggs or fewer per day. There are a lot of studies, but we only have so much room here, so we’ll pick one. Its findings are representative of (and in keeping with) the many other studies we looked at, so this seems uncontroversial scientifically:
❝Intake of 1 egg/d was sufficient to increase HDL function and large-LDL particle concentration; however, intake of 2-3 eggs/d supported greater improvements in HDL function as well as increased plasma carotenoids. Overall, intake of ≤3 eggs/d favored a less atherogenic LDL particle profile, improved HDL function, and increased plasma antioxidants in young, healthy adults.❞
Enjoy!
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Should Men Over 50 Get PSA?
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It’s Q&A Day at 10almonds!
Have a question or a request? You can always hit “reply” to any of our emails, or use the feedback widget at the bottom!
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
❝Loved the information on prostate cancer. Do recommend your readers get a PSA or equivalent test annually for over 50 yr old men.❞
(This is about: Prostate Health: What You Should Know)
Yep, or best yet, the much more accurate PSE test! But if PSA test is what’s available, it’s a lot better than nothing. And, much as it’s rarely the highlight of anyone’s day, a prostate exam by a suitably qualified professional is also a good idea.
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Biohack Your Brain – by Dr. Kristen Willeumier
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The title of this book is a little misleading, as it’s not really about biohacking; it’s more like a care and maintenance manual for the brain.
This distinction is relevant, because to hack a thing is to use it in a way it’s not supposed to be used, and/or get it to do something it’s not supposed to do.
Intead, what neurobiologist Dr. Kristen Willeumier offers us is much more important: how to keep our brain in good condition.
She takes us through the various things that our brain needs, and what will happen if it doesn’t get them. Some are dietary, some are behavioral, some are even cognitive.
A strength of this book is not just explaining what things are good for the brain, but also: why. Understanding the “why” can be the motivational factor that makes a difference between us doing the thing or not!
For example, if we know that exercise is good for the brain, we think “sounds reasonable” and carry on with what we were doing. If, however, we also understand how increased bloodflow helps with the timely removal of beta-amyloids that are associated with Alzheimer’s, we’re more likely to make time for getting that movement going.
Bottom line: there are key things we can do to keep our brain healthy, and you probably wouldn’t want to miss any. This book is a great care manual for such!
Click here to check out Biohack Your Brain and keep your brain young and fit!
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Awakening Your Ikigai – by Dr. Ken Mogi
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It’s been well-established in supercentenarian studies that one of the key factors beyond diet or exercise or suchlike (important as those things definitely are), is having a purpose to one’s life.
Neuroscientist Dr. Ken Mogi explains in this very easy-to-read book, how we can bring ikigai into our lives.
From noticing the details of the small things in life, to reorienting one’s life around what’s most truly most important to us, Dr. Mogi gives us not just a “this is ikigai” exposé, but rather, a practical and readily applicable how-to guide.
Bottom line: if you’ve so far been putting off ikigai as “I’ll get to that”, the time to start is today.
Click here to check out Awakening Your Ikigai, and actually awaken yours!
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How Useful Is Hydrotherapy?
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Hyyyyyyydromatic…
Hydrotherapy is a very broad term, and refers to any (external) use of water as part of a physical therapy. Today we’re going to look at some of the top ways this can be beneficial—maybe you’ll know them all already, but maybe there’s something you hadn’t thought about or done decently; let’s find out!
Notwithstanding the vague nature of the umbrella term, some brave researchers have done a lot of work to bring us lots of information about what works and what doesn’t, so we’ll be using this to guide us today. For example:
Scientific Evidence-Based Effects of Hydrotherapy on Various Systems of the Body
Swimming (and similar)
An obvious one, this can for most people be a very good full-body exercise, that’s exactly as strenuous (or not) as you want/need it to be.
It can be cardio, it can be resistance, it can be endurance, it can be high-intensity interval training, it can be mobility work, it can be just support for an aching body that gets to enjoy being in the closest to zero-gravity we can get without being in freefall or in space.
See also: How To Do HIIT (Without Wrecking Your Body)
Depending on what’s available for you locally (pool with a shallow area, for example), it can also be a place to do some exercises normally performed on land, but with your weight being partially supported (and as a counterpoint, a little resistance added to movement), and no meaningful risk of falling.
Tip: check out your local facilities, to see if they offer water aerobics classes; because the water necessitates slow movement, this can look a lot like tai chi to watch, but it’s great for mobility and balance.
Water circuit therapy
This isn’t circuit training! Rather, it’s a mixture of thermo- and cryotherapy, that is to say, alternating warm and cold water immersion. This can also be interspersed with the use of a sauna, of course.
See also:
- Ice Baths: To Dip Or Not To Dip?
- Saunas: Health Benefits (& Caveats)
- The Stress Prescription (Against Aging!)
this last one is about thermal shock-mediated hormesis, which sounds drastic, but it’s what we’re doing here with the hot and cold, and it’s good for most people!
Pain relief
Most of the research for this has to do with childbirth pain rather than, for example, back pain, but the science is promising:
Post-exercise recovery
It can be tempting to sink into a hot bath, or at least enjoy a good hot shower, after strenuous exercise. But does it help recovery too? The answer is probably yes:
Effect of hot water immersion on acute physiological responses following resistance exercise
For more on that (and other means of improving post-exercise recovery), check out our previous main feature:
How To Speed Up Recovery After A Workout (According To Actual Science)
Take care!
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Vaccines and cancer: The myth that won’t die
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Two recent studies reported rising cancer rates among younger adults in the U.S. and worldwide. This prompted some online anti-vaccine accounts to link the studies’ findings to COVID-19 vaccines.
But, as with other myths, the data tells a very different story.
What you need to know
- Baseless claims that COVID-19 vaccines cause cancer have persisted online for several years and gained traction in late 2023.
- Two recent reports finding rising cancer rates among younger adults are based on pre-pandemic cancer incidence data. Cancer rates in the U.S. have been on the rise since the 1990s.
- There is no evidence of a link between COVID-19 vaccination and increased cancer risk.
False claims about COVID-19 vaccines began circulating months before the vaccines were available. Chief among these claims was misinformed speculation that vaccine mRNA could alter or integrate into vaccine recipients’ DNA.
It does not. But that didn’t prevent some on social media from spinning that claim into a persistent myth alleging that mRNA vaccines can cause or accelerate cancer growth. Anti-vaccine groups even coined the term “turbo cancer” to describe a fake phenomenon of abnormally aggressive cancers allegedly linked to COVID-19 vaccines.
They used the American Cancer Society’s 2024 cancer projection—based on incidence data through 2020—and a study of global cancer trends between 1999 and 2019 to bolster the false claims. This exposed the dishonesty at the heart of the anti-vaccine messaging, as data that predated the pandemic by decades was carelessly linked to COVID-19 vaccines in viral social media posts.
Some on social media cherry-pick data and use unfounded evidence because the claims that COVID-19 vaccines cause cancer are not true. According to the National Cancer Institute and American Cancer Society, there is no evidence of any link between COVID-19 vaccines and an increase in cancer diagnosis, progression, or remission.
Why does the vaccine cancer myth endure?
At the root of false cancer claims about COVID-19 vaccines is a long history of anti-vaccine figures falsely linking vaccines to cancer. Polio and HPV vaccines have both been the target of disproven cancer myths.
Not only do HPV vaccines not cause cancer, they are one of only two vaccines that prevent cancer.
In the case of polio vaccines, some early batches were contaminated with simian virus 40 (SV40), a virus that is known to cause cancer in some mammals but not humans. The contaminated batches were discovered, and no other vaccine has had SV40 contamination in over 60 years.
Follow-up studies found no increase in cancer rates in people who received the SV40-contaminated polio vaccine. Yet, vaccine opponents have for decades claimed that polio vaccines cause cancer.
Recycling of the SV40 myth
The SV40 myth resurfaced in 2023 when vaccine opponents claimed that COVID-19 vaccines contain the virus. In reality, a small, nonfunctional piece of the SV40 virus is used in the production of some COVID-19 vaccines. This DNA fragment, called the promoter, is commonly used in biomedical research and vaccine development and doesn’t remain in the finished product.
Crucially, the SV40 promoter used to produce COVID-19 vaccines doesn’t contain the part of the virus that enters the cell nucleus and is associated with cancer-causing properties in some animals. The promoter also lacks the ability to survive on its own inside the cell or interact with DNA. In other words, it poses no risk to humans.
Over 5.6 billion people worldwide have received COVID-19 vaccines since December 2020. At that scale, even the tiniest increase in cancer rates in vaccinated populations would equal hundreds of thousands of excess cancer diagnoses and deaths. The evidence for alleged vaccine-linked cancer would be observed in real incidence, treatment, and mortality data, not social media anecdotes or unverifiable reports.
This article first appeared on Public Good News and is republished here under a Creative Commons license.
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Metabolic Health Roadmap – by Brenda Wollenberg
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The term “roadmap” is often used in informative books, but in this case, Wollenberg (a nutritionist with decades of experience) really does deliver what can very reasonably be described as a roadmap:
She provides chapters in the form of legs of a journey [to better metabolic health], and those legs are broadly divided into an “information center” to deliver new information, a “rest stop” for reflection, “roadwork” to guide the reader through implementing the information we just learned, in a practical fashion, and finally “traveller assistance” to give additional support / resources, as well as any potential troubleshooting, etc.
The information and guidance within are all based on very good science; a lot is what you will have read already about blood sugar management (generally the lynchpin of metabolic health in general), but there’s also a lot about leveraging epigenetics for our benefit, rather than being sabotaged by such.
There’s a little guidance that falls outside of nutrition (sleep, exercise, etc), but for the most part, Wollenberg stays within her own field of expertise, nutrition.
The style is idiosyncratic; it’s very clear that her goal is providing the promised roadmap, and not living up to any editor’s wish or publisher’s hope of living up to industry standard norms of book formatting. However, this pays off, because her delivery is clear and helpful while remaining personable and yet still bringing just as much actual science, and this makes for a very pleasant and informative read.
Bottom line: if you’d like to improve your metabolic health, as well as get held-by-the-hand through your health-improvement journey by a charming guide, this is very much the book for you!
Click here to check out the Metabolic Health Roadmap, and start taking steps!
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