Eat To Beat Cancer
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Controlling What We Can, To Avoid Cancer
Every time a cell in our body is replaced, there’s a chance it will be cancerous. Exactly what that chance is depends on very many factors. Some of them we can’t control; others, we can.
Diet is a critical, modifiable factor
We can’t choose, for example, our genes. We can, for the most part, choose our diet. Why “for the most part”?
- Some people live in a food desert (the Arctic Circle is a good example where food choices are limited by supply)
- Some people have dietary restrictions (whether by health condition e.g. allergy, intolerance, etc or by personal-but-unwavering choice, e.g. vegetarian, vegan, kosher, halal, etc)
But for most of us, most of the time, we have a good control over our diet, and so that’s an area we can and should focus on.
Choose your animal protein wisely
If you are vegan, you can skip this section. If you are not, then the short version is:
- Fish: almost certainly fine
- Poultry: the jury is out; data is leaning towards fine, though
- Red meat: significantly increased cancer risk
- Processed meat: significantly increased cancer risk
For more details (and a run-down on the science behind the above super-summarized version):
- Do We Need Animal Products To Be Healthy? ← A mythbuster article that outlines many health properties (good and bad) of animal products
- The Whys and Hows of Cutting Meats Out Of Your Diet ← A life-hack article about acting on that information
Skip The Ultra-Processed Foods
Ok, so this one’s probably not a shocker in its simplest form:
❝Studies are showing us is that not only do the ultraprocessed foods increase the risk of cancer, but that after a cancer diagnosis such foods increase the risk of dying❞
Source: Is there a connection between ultraprocessed food and cancer?
There’s an unfortunate implication here! If you took the previous advice to heart and cut out [at least some] meat, and/but then replaced that with ultra-processed synthetic meat, then this was not a great improvement in cancer risk terms.
Ultra-processed meat is worse than unprocessed, regardless of whether it was from an animal or was synthetic.
In other words: if you buy textured soy pieces (a common synthetic meat), it pays to look at the ingredients, because there’s a difference between:
- INGREDIENTS: SOY
- INGREDIENTS: Rehydrated Textured SOY Protein (52%), Water, Rapeseed Oil, SOY Protein Concentrate, Seasoning (SULPHITES) (Dextrose, Flavourings, Salt, Onion Powder, Food Starch Modified, Yeast Extract, Colour: Red Iron Oxide), SOY Leghemoglobin, Fortified WHEAT Flour (WHEAT Flour, Calcium Carbonate, Iron, Niacin, Thiamin), Bamboo Fibre, Methylcellulose, Tomato Purée, Salt, Raising Agent: Ammonium Carbonates
Now, most of those original base ingredients are/were harmless per se (as are/were the grapes in wine—before processing into alcohol), but it has clearly been processed to Hell and back to do all that.
Choose the one that just says “soy”. Or eat soybeans. Or other beans. Or lentils. Really there are a lot of options.
About soy, by the way…
There is (mostly in the US, mostly funded by the animal agriculture industry) a lot of fearmongering about soy. Which is ironic, given the amount of soy that is fed to livestock to be fed to humans, but it does bear addressing:
❝Soy foods are safe for all cancer patients and are an excellent source of plant protein. Studies show soy may improve survival after breast cancer❞
Source: Food risks and cancer: What to avoid
(obviously, if you have a soy allergy then you should not consume soy—for most people, the above advice stands, though)
Advanced Glycation End-Products
These (which are Very Bad™ for very many things, including cancer) occur specifically as a result of processing animal proteins and fats.
Note: not even necessarily ultra-processing, just processing can do it. But ultra-processing is worse. What’s the difference, you wonder?
The difference between “ultra-processed” and just “processed”:
- Your average hotdog has been ultra-processed. It’s not only usually been changed with many artificial additives, it’s also been through a series of processes (physical and chemical) and ends up bearing little relation to the creature it came from.
- Your bacon (that you bought fresh from your local butcher, not a supermarket brand of unknown provenance, and definitely not the kind that might come on the top of frozen supermarket pizza) has been processed. It’s undergone a couple of simple processes on its journey “from farm to table”. Remember also that when you cook it, that too is one more process (and one that results in a lot of AGEs).
Read more: What’s so bad about AGEs?
Note if you really don’t want to cut out certain foods, changing the way you cook them (i.e., the last process your food undergoes before you eat it) can also reduce AGES:
Advanced Glycation End Products in Foods and a Practical Guide to Their Reduction in the Diet
Get More Fiber
❝The American Institute for Cancer Research shows that for every 10-gram increase in fiber in the diet, you improve survival after cancer diagnosis by 13%❞
Source: Plant-based diet is encouraged for patients with cancer
Yes, that’s post-diagnosis, but as a general rule of thumb, what is good/bad for cancer when you have it is good/bad for cancer beforehand, too.
If you’re thinking that increasing your fiber intake means having to add bran to everything, happily there are better ways:
Level-Up Your Fiber Intake! (Without Difficulty Or Discomfort)
Enjoy!
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Debunking the vitamin D fad
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Throughout the pandemic, many unproven miracle COVID-19 “cures” emerged, and vitamin D claims have been one of the most persistent. This is not new for the vitamin. It’s been touted in recent decades as a way to “boost” the immune system, improve overall health, prevent a host of diseases, and allegedly even substitute for vaccines.
But as with many internet-popular health “remedies,” the reality is far less flashy and far more nuanced.
What is vitamin D, and why is it important?
Vitamin D is a nutrient that helps the body absorb calcium, which is essential for bone health. In the sunlight, your skin naturally produces vitamin D that is then stored in fat cells until it is used.
The skin pigment melanin absorbs the UV rays necessary for vitamin D production, meaning that more highly pigmented or darker skin produces less vitamin D than lighter skin with the same amount of sun exposure. Thus, people with darker skin are at higher risk of vitamin D deficiency.
Most of our vitamin D comes from the sun. An additional 10 percent to 20 percent of our vitamin D comes from foods like fatty fish (such as salmon), eggs, and mushrooms. Vitamin D supplements are another source of the nutrient for people who are unable to get enough from sun exposure and diet.
Vitamin D deficiency is real, but there’s no epidemic
Some people who promote vitamin D supplements claim that vitamin D deficiency is an epidemic causing widespread health issues. There is little evidence to support this claim. A 2022 analysis of 2001-2018 data found that 2.6 percent of people in the U.S. had severe vitamin D deficiency.
Severe vitamin D deficiency can cause serious health issues, such as muscle weakness, bone loss in adults, and rickets (weak bones) in children. Some people are at higher risk for the deficiency, including individuals with certain disorders that prevent the body from absorbing or processing vitamin D or those with a family history of vitamin D deficiency.
Black Americans have the highest rates of severe vitamin D deficiency at nearly 12 percent. Severe vitamin D deficiency is also slightly higher in the U.S. during the winter when people get less sun exposure. Rates of moderate vitamin D deficiency are higher at 22 percent overall and are highest among Black Americans (49 percent) and Mexican Americans (35 percent).
Although severe vitamin D deficiency exists in the U.S., it is far from common. Most tellingly, conditions that are directly linked to vitamin D deficiency are not widespread. There is no epidemic of rickets, for example, or bone loss in adults.
There’s little evidence that vitamin D supplements improve overall health
Vitamin D supplements have clear, proven positive effects for people with vitamin D deficiency. Other health benefits of vitamin D supplements are less certain.
There is some evidence that the supplement may reduce the risk of fracture in adults with osteoporosis, a condition that causes weak, fragile bones. However, the benefit appears to be limited to people who have low vitamin D levels. In adults with normal vitamin D levels, supplements have no effect on fracture risk.
The largest randomized controlled trial of vitamin D, called VITAL, investigated the effects of vitamin D supplementation in people without an existing deficiency. The study found that vitamin D supplements had no effects on the risk of cancer, diabetes, or cardiovascular disease, including heart attack and stroke. The study concluded that more research is necessary to determine who may benefit from vitamin D supplements.
Independent analyses found that vitamin D supplementation may be associated with a long-term decrease in cancer mortality, but results are mixed and also require more investigation.
A 2021 analysis of past vitamin D trials found no overall health benefits from vitamin D supplements in people with normal vitamin D levels. Most large-scale studies have found no link between vitamin D supplements and lower all-cause mortality (deaths from any cause), except in older adults and those with vitamin D deficiency.
Vitamin D provides modest protection against respiratory infections
Vitamin D is important for immune function, but this is often misconstrued as vitamin D “boosting” the immune system.
Some people falsely believe that taking vitamin D supplements will keep them healthy and prevent infections like the flu or COVID-19. In reality, clinical trials and large-scale studies of vitamin D have found only minimal protective effects against respiratory infections.
A 2021 analysis of 46 trials found that 61.3 percent of participants who took daily vitamin D supplements got respiratory infections during the study periods—compared to 62.3 percent of people who did not take the supplements. A 2024 meta-analysis of 43 trials found no overall protective effect against respiratory infections, but it detected a slight decrease in risk among people who took specific doses daily.
In young children, there is some evidence that vitamin D supplementation may reduce the length of respiratory infections. However, it does not affect the number or severity of infections that children have.
Despite claims that taking vitamin D can protect against COVID-19, two clinical trials found that taking daily vitamin D supplements did not reduce the risk or severity of COVID-19 infections, even at high doses.
Context is key when considering vitamin D’s benefits
None of these studies contradict the well-established evidence that people with vitamin D deficiency benefit from vitamin D supplements. But it’s important to remember that many of the most popular health claims about vitamin D’s benefits are based on research in people with vitamin D deficiency.
Research in vitamin D-deficient populations is important, but it tells us little about how vitamin D will affect people with normal or close to normal vitamin D levels. A closer look at vitamin D research in people without low levels reveals little evidence to support the idea that the general population benefits from taking vitamin D supplements.
For more information, or to learn about your vitamin D levels, talk to your health care provider.
This article first appeared on Public Good News and is republished here under a Creative Commons license.
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Atomic Habits – by James Clear
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James Clear’s Atomic Habits has become “the” go-to book about the power of habit-forming. And, there’s no shortage of competition out there, so that’s quite a statement. What makes this book stand out?
A lot of books start by assuming you want to build habits. That can seem a fair assumption; after all, we picked up the book! But an introductory chapter really hammers home the idea in a way that makes it a lot more motivational:
- Habits are the compound interest of productivity
- This means that progress is not linear, but exponential
- Habits can also be stacked, and thus become synergistic
- The more positive habits you add incrementally, the easier they become because each thing is making your life easier/better
For example:
- It’s easier to save money if you’re in good health
- It’s easier to sleep better if you do not have financial worries
- It’s easier to build your relationship with your loved ones if you’re not tired
…and so on.
For many people this presents a Catch-22 problem! Clear instead presents it as an opportunity… Start wherever you like, but just start small, with some two-minute thing, and build from there.
A lot of the book is given over to:
- how to form effective habits (using his “Four Laws”)
- how to build them into your life
- how to handle mishaps
- how to make sure your habits are working for you
- how to see habits as part of your identity, and not just a goal to be checked off
The last one is perhaps key—goals cease to be motivating once accomplished. Habits, on the other hand, keep spiralling upwards (if you guide them appropriately).
There’s lots more we could say, but it’s a one-minute book review, so we’ll just close by saying:
This book can help you to become the kind of person who genuinely gets a little better each day, and reaps the benefits over time.
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Just Be Well – by Dr. Thomas Sult
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Firstly, what this is not: a “think yourself well” book. It’s not about just deciding to be well.
Rather, it’s about ensuring the foundations of wellness, from which the rest of good health can spring, and notably, an absence of chronic illness. In essence: enjoying chronic good health.
The prescription here is functional medicine, which stands on the shoulders of lifestyle medicine. This latter is thus briefly covered and the basics presented, but most of the book is about identifying the root causes of disease and eliminating them one by one, by taking into account the functions of the body’s processes, both in terms of pathogenesis (and thus, seeking to undermine that) and in terms of correct functioning (i.e., good health).
While the main focus of the book is on health rather than disease, he does cover a number of very common chronic illnesses, and how even in those cases where they cannot yet be outright cured, there’s a lot more that can be done for them than “take two of these and call your insurance company in the morning”, when the goal is less about management of symptoms (though that is also covered) and more about undercutting causes, and ensuring that even if one thing goes wrong, it doesn’t bring the entire rest of the system down with it (something that often happens without functional medicine).
The style is clear, simple, and written for the layperson without unduly dumbing things down.
Bottom line: if you would like glowingly good health regardless of any potential setbacks, this book can help your body do what it needs to for you.
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The Sun Exposure Dilemma
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The Sun Exposure Dilemma
Yesterday, we asked you about your policy on sun exposure, and got the above-pictured, below-described, set of answers:
- A little over a third of respondents chose “I recognize the risks, but I think the benefits outweigh them”
- A quarter of respondents chose “I am a creature of the shadows and I avoid the sun at all costs”
- A little over a fifth of respondents chose “I recognize the benefits, but I think the risks outweigh them”
- A little under a fifth of respondents chose “I’m a sun-lover! Give me that vitamin D and other benefits!”
All in all, this is perhaps the most even spread of answers we’ve had for Friday mythbuster polls—though the sample size was smaller than it often is.
Of those who added comments, common themes were to mention your local climate, and the importance of sunscreen and/or taking vitamin D supplements.
One subscriber mentioned having lupus and living in Florida, which is a particularly unfortunate combination:
Lupus Foundation | Lupus & UV exposure: What you need to know
Another subscriber wrote:
❝Use a very good sunscreen with a high SPF all the time. Reapply after swimming or as needed! I also wear polarized sunglasses anytime I’m outside.❞
…which are important things to note too, and a lot of people forget!
See also: Who Screens The Sunscreens? (on fearing chemical dangers, vs the protection given)
But, onto today’s science for the topic at hand…
We need to get plenty of sun to get plenty of vitamin D: True or False?
True or False, depending on so many factors—to the point that many people get it wildly wrong in either direction.
Whether we are getting enough vitamin D depends on many circumstances, including:
- The climate (and depending on latitude, time of year) where we live
- Our genes, and especially (but not only) our skintone
- The clothes we wear (or don’t)
- Our diet (and not just “how much vitamin D do we consume”)
- Chronic diseases that affect vitamin D metabolism and/or requirements and/or sensitivity to the sun
For a rundown on these factors and more, check out:
Should I be getting my vitamin D levels checked?
Notably, on the topic of whether you should stay in the sun for longer to get more vitamin D…
❝The body can only produce a certain amount of vitamin D at the time, so staying in the sun any longer than needed (which could be just a few minutes, in a sunny climate) is not going to help increase your vitamin D levels, while it will increase your risk of skin cancer.❞
In contrast, she does also note:
❝During winter, catching enough sun can be difficult, especially if you spend your days confined indoors. Typically, the required exposure increases to two to three hours per week in winter. This is because sunlight exposure can only help produce vitamin D if the UVB rays reach us at the correct angle. So in winter we should regularly spend time outside in the middle of the day to get our dose of vitamin D.❞
See also: Vitamin D & Calcium: Too Much Of A Good Thing?
We can skip the sun and get our vitamin D from diet/supplements: True or False?
True! However, vitamin D is not the only health benefit of sun exposure.
Not only is sunlight-induced serotonin production important for many things ranging from mood to circadian rhythm (which in turn affects many other aspects of health), but also…
While too much sun can cause skin cancer, too little sun could cause other kinds of cancer:
Benefits of Sunlight: A Bright Spot for Human Health
Additionally, according to new research, the circadian rhythm benefits we mentioned above may also have an impact on type 2 diabetes:
Can catching some rays help you fight off type 2 diabetes?
Which way to jump?
A lot of it depends on who you are, ranging from the factors we mentioned earlier, to even such things as “having many moles” or “having blonde hair”.
This latter item, blonde hair, is a dual thing: it’s a matter of genetic factors that align with being prone to being more sensitive to the sun, as well as being a lesser physical barrier to the sun’s rays than dark hair (that can block some UV rays).
So for example, if two people have comparably gray hair now, but one of them used to have dark hair and the other blonde, there will still be a difference in how they suffer damage, or don’t—and yes, even if their skin is visually of the same approximate skintone.
You probably already know for yourself whether you are more likely to burn or tan in the sun, and the former group are less resistant to the sun’s damage… But the latter group are more likely to spend longer in the sun, and accumulate more damage that way.
If you’d like a very comprehensive downloadable, here are the guidelines issued by the UK’s National Institute for Health and Care Excellence:
NICE Guidelines | Sunlight exposure: risks and benefits
…and skip to “At risk groups”, if you don’t want to read the whole thing; “Skin type” is also an important subsection, which also uses your hair and eye color as indicators.
Writer’s note: genetics are complicated and not everyone will fall neatly into categories, which is why it’s important to know the individual factors.
For example, I am quite light-skinned with slightly graying dark hair and gray-blue eyes, and/but also have an obscure Sámi gene that means my skin makes vitamin D easily, while simultaneously being unusually resistant to burning (I just tan). Basically: built for the midnight sun of the Arctic circle.
And yet! My hobbies include not getting skin cancer, so I tend to still be quite mindful of UV levels in different weathers and times of day, and make choices (schedule, clothing, sunscreen or not) accordingly.
Bottom line:
That big self-perpetuating nuclear explosion in the sky is responsible for many things, good and bad for our health, so be aware of your own risk factors, especially for vitamin D deficiency, and skin cancer.
- If you have a predisposition to both, that’s unfortunate, but diet and supplementation at least can help with the vitamin D while getting modest amounts of sun at most.
- Remember that you can only make so much vitamin D at once, so sunbathing for health benefits need only take a few minutes
- Remember that sunlight is important for our circadian rhythm, which is important for many things.
- That’s governed by specific photoreceptor cells, though, so we don’t need our skin to be exposed for that; we just need to be able to see sunlight.
- If you’re going to be out in the sun, and not covered up, sunscreen is your friend, and yes, that goes for clear cold days under the winter sun too.
- Most phone weather apps these days have a UV index score as part of the data they give. Get used to checking it as often as you’d check for rain.
Stay safe, both ways around!
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The Lupus Encyclopedia – by Dr. Donald Thomas
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First, a note on the authorship: while this is broadly by Donald E. Thomas Jr. MD FACP FACR, there were more contributors, namely:
Jemima Albayda, MD; Divya Angra, MD; Alan N. Baer, MD; Sasha Bernatsky, MD, PhD; George Bertsias, MD, PhD; Ashira D. Blazer, MD; Ian Bruce, MD; Jill Buyon, MD; Yashaar Chaichian, MD; Maria Chou, MD; Sharon Christie, Esq; Angelique N. Collamer, MD; Ashté Collins, MD; Caitlin O. Cruz, MD; Mark M. Cruz, MD; Dana DiRenzo, MD; Jess D. Edison, MD; Titilola Falasinnu, PhD; Andrea Fava, MD; Cheri Frey, MD; Neda F. Gould, PhD; Nishant Gupta, MD; Sarthak Gupta, MD; Sarfaraz Hasni, MD; David Hunt, MD; Mariana J. Kaplan, MD; Alfred Kim, MD; Deborah Lyu Kim, DO; Rukmini Konatalapalli, MD; Fotios Koumpouras, MD; Vasileios C. Kyttaris, MD; Jerik Leung, MPH; Hector A. Medina, MD; Timothy Niewold, MD; Julie Nusbaum, MD; Ginette Okoye, MD; Sarah L. Patterson, MD; Ziv Paz, MD; Darryn Potosky, MD; Rachel C. Robbins, MD; Neha S. Shah, MD; Matthew A. Sherman, MD; Yevgeniy Sheyn, MD; Julia F. Simard, ScD; Jonathan Solomon, MD; Rodger Stitt, MD; George Stojan, MD; Sangeeta Sule, MD; Barbara Taylor, CPPM, CRHC; George Tsokos, MD; Ian Ward, MD; Emma Weeding, MD; Arthur Weinstein, MD; Sean A. Whelton, MD
The reason we mention this is to render it clear that this isn’t one man’s opinions (as happens with many books about certain topics), but rather, a panel of that many doctors all agreeing that this is correct and good, evidence-based, up-to-date (as of the publication of this latest revised edition last year) information.
And if you have lupus, you’ll be aware there are a lot of doctors who don’t know a tremendous amount about it, hence the value of this “…for patients and healthcare providers” tome.
It is what it claims to be: a very comprehensive guide. It’s not light reading, and it is 848 pages of information-dense text and diagrams. If you want to know something, anything, about lupus, then if science knows it, then chances are it is in this book, or this book will at least point you directly to a paper you can read about your specific query.
The style is, nevertheless, about as readable for the layperson as possible, which is quite an achievement for a book with this amount of dense scientific information. For that, the author thanks his husband, for being the non-doctor beta-reader to screen it for readability—quite a service, with all those doctors writing!
Bottom line: if you or someone you love has lupus, this book should absolutely be in your collection.
Click here to check out The Lupus Encyclopedia, and have everything at your fingertips!
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Tourette’s Syndrome Treatment Options
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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
❝Is there anything special that might help someone with Tourette’s syndrome?❞
There are of course a lot of different manifestations of Tourette’s syndrome, and some people’s tics may be far more problematic to themselves and/or others, while some may be quite mild and just something to work around.
It’s an interesting topic for sure, so we’ll perhaps do a main feature (probably also covering the related-and-sometimes-overlapping OCD umbrella rather than making it hyperspecific to Tourette’s), but meanwhile, you might consider some of these options:
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