Is Dairy Scary?

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Is Dairy Scary?

Milk and milk products are popularly enjoyed as a good source of calcium and vitamin D.

In contrast, critics of dairy products (for medical reasons, rather than ethical, which is another matter entirely and beyond the scope of this article) point to risks of cancer, heart disease, and—counterintuitively—osteoporosis. We’ll focus more on the former, but touch on the latter two before closing.

Dairy & Cancer

Evidence is highly conflicting. There are so many studies with so many different results. This is partially explicable by noting that not only is cancer a many-headed beast that comes in more than a hundred different forms and all or any of them may be affected one way or another by a given dietary element, but also… Not all milk is created equal, either!

Joanna Lampe, of the Public Health Sciences division, Fred Hutchinson Cancer Research Center in Seattle, writes:

❝Dairy products are a complex group of foods and composition varies by region, which makes evaluation of their association with disease risk difficult. For most cancers, associations between cancer risk and intake of milk and dairy products have been examined only in a small number of cohort studies, and data are inconsistent or lacking❞

In her systematic review of studies, she noted, for example, that:

  • Milk and dairy products contain micronutrients and several bioactive constituents that may influence cancer risk and progression
  • There’s probable association between milk intake and lower risk of colorectal cancer
  • There’s a probable association between diets high in calcium and increased risk of prostate cancer
  • Some studies show an inverse association between intake of cultured dairy products and bladder cancer (i.e., if you eat yogurt you’re less likely to get bladder cancer)

Since that systemic review was undertaken, more research has been conducted, and the results are… Not conclusive, but converging towards a conclusion:

  • Dairy products can increase or decrease cancer risk
  • The increase in cancer risk seems strongest when milk is consumed in quantities that result in too much calcium. When it comes to calcium, you can absolutely have too much of a good thing—just ask your arteries!
  • The decrease in cancer seems to be mostly, if not exclusively, from fermented dairy products. This usually means yogurts. The benefit here is not from the milk itself, but rather from the gut-friendly bacteria.

You may be wondering: “Hardened arteries, gut microbiome health? I thought we were talking about cancer?” and yes we are. No part of your health is an island unrelated to other parts of your health. One thing can lead to another. Sometimes we know how and why, sometimes we don’t, but it’s best to not ignore the data.

The bottom line on dairy products and cancer is:

  • Consuming dairy products in general is probably fine
  • Yogurt, specifically, is probably beneficial

Dairy and Heart Disease

The reason for the concern is clear enough: it’s largely assumed to be a matter of saturated fat intake.

The best combination of “large” and “recent” that we found was a three-cohort longitudinal study in 2019, which pretty much confirms what was found in smaller or less recent studies:

  • There is some evidence to suggest that consumption of dairy can increase all-cause mortality in general, and death from (cancer and) cardiovascular disease in particular
  • The evidence is not, however, overwhelming. It is marginal.

Dairy and Osteoporosis

Does dairy cause osteoporosis? Research here tends to fall into one of two categories when it comes to conclusions, so we’ll give an example of each:

  1. “Results are conflicting, saying yes/no/maybe, and basically we just don’t know”
  2. “Results are conflicting, but look: cross-sectional and case-control studies say yes; cohort studies say maybe or no; we prefer the cohort studies”

See them for yourself:

  1. Osteoporosis: Is milk a kindness or a curse?
  2. Consumption of milk and dairy products and risk of osteoporosis and hip fracture

Conclusion: really, the jury is very much still out on this one

Summary:

  • Moderate consumption of dairy products is almost certainly fine
  • More specifically: it probably has some (small) pros and some (small) cons
  • Yogurt is almost certainly healthier than other dairy products, and is almost universally considered a healthy food (assuming not being full of added sugar etc, of course)
  • If you’re going to have non-dairy alternatives to milk, choose wisely!

That’s all we have time for today, but perhaps in a future edition we’ll do a run-down of the pros and cons of various dairy alternatives!

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  • Heart Rate Zones, Oxalates, & More

    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.

    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

    ❝I think the heart may be an issue for lots of us. I know it is for me due to AFib. When I’m in my training zone like on a treadmill, I’m usually around 110 to 120. But there are occasionally times when I’m at 140 or 150. How dangerous is that? If I use that formula of 180 minus age, thats 103. I get nothing from that. My resting heart rate is in the 50 to 60 range.❞

    First, for safety, let us draw attention to our medical disclaimer at the bottom of each email, and also specifically note that we are not cardiologists here, let alone your cardiologist. There’s a lot we can’t know or advise about. However, as general rules of thumb:

    For people without serious health conditions, it is considered good and healthful for one’s heart rate to double (from its resting rate) during exercise, with even more than 2.5x resting rate being nothing more than a good cardio workout.

    As for “180 minus age” (presuming you mean: to calculate the safe maximum heart rate), more common (and used by the American Heart Association) is 220 minus age. In your case, that’d give 143.

    Having atrial fibrillation may change this however, and we can’t offer medical advice.

    We can point to this AHA “AFib Resources For Patients and Professionals”, including this handy FAQ sheet which says:

    “Am I able to exercise?” / “Yes, as long as you’re cleared by your doctor, you can perform normal activities of daily living that you can tolerate” (accompanied by a little graphic of a person using an exercise bike)

    You personally probably know this already, of course, but it’s quite an extensive collection of resources, so we thought we’d include it.

    It’s certainly a good idea for everyone to be aware of their healthy heart rate ranges, regardless of having a known heart condition or not, though!

    American Heart Association: Target Heart Rates Chart

    ❝I would like to see some articles on osteoporosis❞

    You might enjoy this mythbusting main feature we did a few weeks ago!

    The Bare-Bones Truth About Osteoporosis

    ❝Interesting, but… Did you know spinach is high in oxylates? Some people are sensitive and can cause increased inflammation, joint pain or even kidney stones. Moderation is key. My sister and I like to eat healthy but found out by experience that too much spinach salad caused us joint and other aches.❞

    It’s certainly good to be mindful of such things! For most people, a daily serving of spinach shouldn’t cause ill effects, and certainly there are other greens to eat.

    We wondered whether there was a way to reduce the oxalate content, and we found:

    How to Reduce Oxalic Acid in Spinach: Neutralizing Oxalates

    …which led us this product on Amazon:

    Nephure Oxalate Reducing Enzyme, Low Oxalate Diet Support

    We wondered what “nephure” was, and whether it could be trusted, and came across this “Supplement Police” article about it:

    Nephure Review – Oxalate Reducing Enzyme Powder Health Benefits?

    …which honestly, seems to have been written as a paid advertisement. But! It did reference a study, which we were able to look up, and find:

    In vitro and in vivo safety evaluation of Nephure™

    …which seems to indicate that it was safe (for rats) in all the ways that they checked. They did not, however, check whether it actually reduced oxalate content in spinach or any other food.

    The authors did declare a conflict of interest, in that they had a financial relationship with the sponsor of the study, Captozyme Inc.

    All in all, it may be better to just have kale instead of spinach:

    We turn the tables and ask you a question!

    We’ll then talk about this tomorrow:

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  • Get Past Executive Dysfunction

    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.

    In mathematics, there is a thing called the “travelling salesman problem”, and it is hard. Not just subjectively; it is classified in mathematical terms as an “NP-hard problem”, wherein NP stands for “nondeterministic polynomial”.

    The problem is: a travelling salesman must visit a certain list of cities, order undetermined, by the shortest possible route that visits them all.

    To work out what the shortest route is involves either very advanced mathematics, or else solving it by brute force, which means measuring every possible combination order (which number gets exponentially larger very quickly after the first few cities) and then selecting the shortest.

    Why are we telling you this?

    Executive dysfunction’s analysis paralysis

    Executive dysfunction is the state of knowing you have things to do, wanting to do them, intending to do them, and then simply not doing them.

    Colloquially, this can be called “analysis paralysis” and is considered a problem of planning and organizing, as much as it is a problem of initiating tasks.

    Let’s give a simple example:

    You wake up in the morning, and you need to go to the bathroom. But the bathroom will be cold, so you’ll want to get dressed first. However, it will be uncomfortable to get dressed while you still need to use the bathroom, so you contemplate doing that first. Those two items are already a closed loop now. You’re thirsty, so you want to have a drink, but the bathroom is calling to you. Sitting up, it’s colder than under the covers, so you think about getting dressed. Maybe you should have just a sip of water first. What else do you need to do today anyway? You grab your phone to check, drink untouched, clothes unselected, bathroom unvisited.

    That was a simple example; now apply that to other parts of your day that have much more complex planning possible.

    This is like the travelling salesman problem, except that now, some things are better if done before or after certain other things. Sometimes, possibly, they are outright required to be done before or after certain other things.

    So you have four options:

    • Solve the problem of your travelling-salesman-like tasklist using advanced mathematics (good luck if you don’t have advanced mathematics)
    • Solve the problem by brute force, calculating all possible variations and selecting the shortest (good luck getting that done the same day)
    • Go with a gut feeling and stick to it (people without executive dysfunction do this)
    • Go towards the nearest item, notice another item on the way, go towards that, notice a different item on the way there, and another one, get stuck for a while choosing between those two, head towards one, notice another one, and so on until you’ve done a very long scenic curly route that has narrowly missed all of your targetted items (this is the executive dysfunction approach).

    So instead, just pick one, do it, pick another one, do it, and so forth.

    That may seem “easier said than done”, but there are tools available…

    Task zero

    We’ve mentioned this before in the little section at the top of our daily newsletter that we often use for tips.

    One of the problems that leads to executive function is a shortage of “working memory”, like the RAM of a computer, so it’s easy to get overwhelmed with lists of things to do.

    So instead, hold only two items in your mind:

    • Task zero: the thing you are doing right now
    • Task one: the thing you plan to do next

    When you’ve completed task zero, move on to task one, renaming it task zero, and select a new task one.

    With this approach, you will never:

    • Think “what did I come into this room for?”
    • Get distracted by alluring side-quests

    Do not get corrupted by the cursed artefact

    In fantasy, and occasionally science fiction, there is a trope: an item that people are drawn towards, but which corrupts them, changes their motivations and behaviors for the worse, as well as making them resistant to giving the item up.

    An archetypal example of this would be the One Ring from The Lord of the Rings.

    It’s easy to read/watch and think “well I would simply not be corrupted by the cursed artefact”.

    And then pick up one’s phone to open the same three apps in a cycle for the next 40 minutes.

    This is because technology that is designed to be addictive hijacks our dopamine processing, and takes advantage of executive dysfunction, while worsening it.

    There are some ways to mitigate this:

    Rebalancing Dopamine (Without “Dopamine Fasting”)

    …but one way to avoid it entirely is to mentally narrate your choices. It’s a lot harder to make bad choices with an internal narrator going:

    • “She picked up her phone absent-mindedly, certain that this time it really would be only a few seconds”
    • “She picked up her phone for the eleventy-third time”
    • “Despite her plan to put her shoes on, she headed instead for the kitchen”

    This method also helps against other bad choices aside from those pertaining to executive dysfunction, too:

    • “Abandoning her plan to eat healthily, she lingered in the confectionary aisle, scanning the shelves for sugary treats”
    • “Monday morning will be the best time to start my new exercise regime”, she thought, for the 35th week so far this year

    Get pharmaceutical or nutraceutical help

    While it’s not for everyone, many people with executive dysfunction benefit from ADHD meds. However, they have their pros and cons (perhaps we’ll do a run-down one of these days).

    There are also gentler options that can significantly ameliorate executive dysfunction, for example:

    Bacopa Monnieri: A Well-Evidenced Cognitive Enhancer For Focus & More

    Enjoy!

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  • Feeding You Lies – by Vani Hari

    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.

    When it comes to advertising, we know that companies will often be as misleading as they can get away with. But just how misleading is it?

    Vani Hari, of “Food Babe” fame, is here to unravel it all.

    The book covers many areas of food and drink advertising and marketing, and gives particular attention to:

    • Sodas (with and without sugar), and how deleterious they are to the health—as well as not even helping people lose weight, but actively hindering
    • Nutritionally fortified foods, and what we may or may not actually get from them by the time the processing is done
    • Organic food, and what that may or may not mean

    She also covers a lot of what happens outside of supermarkets, way back in universities and corporate boardrooms. In short, who is crossing whose palms with silver for a seal of approval… And what that means for us as consumers.

    A strength of this book that sets it apart from many of its genre, by the way, is that while being deeply critical of certain institutions’ practices, it doesn‘t digress into tinfoil-hat pseudoscientific scaremongering, either. Here at 10almonds we love actual science, so that was good to see too.

    Bottom line: is you’d like to know “can they say that and get away with it if it’s not true?” and make decisions based on the actual nutritional value of things, this is a great book for you.

    Click here to check out “Feeding You Lies” on Amazon and make your shopping healthier!

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Related Posts

  • 10almonds Tells The Tea…
  • Treadmill vs Road

    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.

    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 😎

    ❝Why do I get tired much more quickly running outside, than I do on the treadmill? Every time I get worn out quickly but at home I can go for much longer!❞

    Short answer: the reason is Newton’s laws of motion.

    In other words: on a treadmill, you need only maintain your position in space relative the the Earth while the treadmill moves beneath you, whereas on the road, you need to push against the Earth with sufficient force to move it relative to your body.

    Illustrative thought experiment to make that clearer: if you were to stand on a treadmill with roller skates, and hold onto the bar with even just one finger, you would maintain your speed as far as the treadmill’s computer is concerned—whereas to maintain your speed on a flat road, you’d still need to push with your back foot every few yards or so.

    More interesting answer: it’s a qualitatively different exercise (i.e. not just quantitively different). This is because of all that pushing you’re having to do on the road, while on a treadmill, the only pushing you have to do is just enough to counteract gravity (i.e. to keep you upright).

    As such, both forms of running are a cardio exercise (because simply moving your legs quickly, even without having to apply much force, is still something that requires oxygenated blood feeding the muscles), but road-running adds an extra element of resistance exercise for the muscles of your lower body. Thus, road-running will enable you to build-maintain muscle much more than treadmill-running will.

    Some extra things to bear in mind, however:

    1) You can increase the resistance work for either form of running, by adding weight (such as by wearing a weight vest):

    Weight Vests Against Osteoporosis: Do They Really Build Bone?

    …and while road-running will still be the superior form of resistance work (for the reasons we outlined above), adding a weight vest will still be improving your stabilization muscles, just as it would if you were standing still while holding the weight up.

    2) Stationary cycling does not have the same physics differences as stationary running. By this we mean: an exercise bike will require your muscles to do just as much pushing as they would on a road. This makes stationary cycling an excellent choice for high intensity resistance training (HIRT):

    HIIT, But Make It HIRT

    3) The best form of exercise is the one that you will actually do. Thus, when it’s raining sidewise outside, a treadmill inside will get exercise done better than no running at all. Similarly, a treadmill exercise session takes a lot less preparation (“switch it on”) than a running session outside (“get dressed appropriately for the weather, apply sunscreen if necessary, remember to bring water, etc etc”), and thus is also much more likely to actually occur. The ability to stop whenever one wants is also a reassuring factor that makes one much more likely to start. See for example:

    How To Do HIIT (Without Wrecking Your Body)

    Take care!

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  • The Age-Proof Brain – by Dr. Marc Milstein

    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.

    Biological aging is not truly just one thing, but rather the amalgam of many things intersecting—and most of them are modifiable. The cells of your body neither know nor care how many times you have flown around the sun; they just respond to the stimuli they’re given.

    Which is what fuels this book. The idea is to have a brain that is less-assailed by the things that would make it age, and more rejuvenated by the things that can make it biologically younger.

    Dr. Milstein doesn’t neglect the rest of the body, and indeed notes the brain’s connections with the immune system, the heart, the gut, and more. But everything in this book is done with the brain in mind and its good health as the top priority outcome of all the things he advises.

    On which note, yes, there is plenty of practical, implementable advice here. For a book that is consistently full of study paper citations, he does take care to make everything useful to the reader, and makes everything as easy as possible for the layperson along the way.

    Bottom line: if you would like your brain to age less, this is an excellent, very evidence-based, guidebook.

    Click here to check out The Age-Proof Brain, and age-proof your brain!

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  • Calculate (And Enjoy) The Perfect Night’s Sleep

    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.

    This is Dr. Michael Breus, a clinical psychologist and sleep specialist, and he wants you to get a good night’s sleep, every night.

    First, let’s assume you know a lot of good advice about how to do that already in terms of environment and preparation, etc. If you want a recap before proceeding, then we recommend:

    Get Better Sleep: Beyond The Basics

    Now, what does he want to add?

    Wake up refreshed

    Of course, how obtainable this is will depend on the previous night’s sleep, but there is something important we can do here regardless, and it’s: beat sleep inertia.

    Sleep inertia is what happens when we wake up groggy (for reasons other than being ill, drugged, etc) rather than refreshed. It’s not actually related to how much sleep we have, though!

    Rather, it pertains to whether we woke up during a sleep cycle, or between cycles:

    • If we wake up between sleep cycles, we’ll avoid sleep inertia.
    • If we wake up during a sleep cycle, we’ll be groggy.

    Deep sleep generally occurs in 90-minute blocks, albeit secretly that is generally 3× 20 minute blocks in a trenchcoat, with transition periods between, during which the brainwaves change frequency.

    REM sleep generally occurs in 20 minute blocks, and will usually arrive in series towards the end of our natural sleep period, to fit neatly into the last 90-minute cycle.

    Sometimes these will appear a little out of order, because we are complicated organic beings, but those are the general trends.

    In any case, the take-away here is: interrupt them at your peril. You need to wake up between cycles. There are two ways you can do this:

    1. Carefully calculate everything, and set a very precise alarm clock (this will work so long as you are correct in guessing how long it will take you to fall asleep)
    2. Use a “sunrise” lamp alarm clock, that in the hour approaching your set alarm time, will gradually increase the light. Because the body will not naturally wake up during a cycle unless a threat is perceived (loud noise, physical rousing, etc), the sunrise lamp method means that you will wake up between sleep cycles at some point during that hour (towards the beginning or end, depending on what your sleep balance/debt is like).

    Do not sleep in (even if you have a sleep debt); it will throw everything out.

    Caffeine will not help much in the morning

    Assuming you got a reasonable night’s sleep, your brain has been cleansed of adenosine (a sleepy chemical), and if you are suffering from sleep inertia, the grogginess is due to melatonin (a different sleepy chemical).

    Caffeine is an adenosine receptor blocker, so that will do nothing to mitigate the effects of melatonin in your brain that doesn’t have any meaningful quantity of adenosine in it in the morning.

    Adenosine gradually accumulates in the brain over the course of the day (and then gets washed out while we sleep), so if you’re sleepy in the afternoon (for reasons other than: you just had a nap and now have sleep inertia again), then caffeine can block that adenosine in the afternoon.

    Of course, caffeine is also a stimulant (it increases adrenaline levels and promotes vasoconstriction), but its effects at healthily small doses are modest for most people, and you’d do better by splashing cold water on your face and/or listening to some upbeat music.

    Learn more: The Two Sides Of Caffeine

    Time your naps correctly (if you take naps)

    Dr. Breus has a lot to say about this, based on a lot of clinical research, but as it’s entirely consistent with what we’ve written before (based on the exact same research), to save space we’ll link to that here:

    How To Be An Expert Nap-Artist (With No “Sleep-Hangovers”)

    Calculate your bedtime correctly

    Remember what we said about sleep cycles? This means that that famous “7–9 hours sleep” is actually “either 7½ or 9 hours sleep”—because those are multiples of 90 minutes, whereas 8 hours (for example) is not.

    So, consider the time you want to get up (ideally, this should be relatively early, and the same time every day), and then count backwards either 7½ or 9 hours sleep (you choose), add 20–30 minutes to fall asleep, and that’s your bedtime.

    So for example: if you want to have 7½ hours sleep and get up at 6am, then your bedtime is anywhere between 10pm and 10:10pm.

    Remember how we said not to sleep in, even if you have a sleep debt? Now is the time to pay it off, if you have one. If you normally sleep 7½ hours, then make tonight a 9-hour sleep (plus 20–30 minutes to fall asleep). This means you’ll still get up at 6am, but your bedtime is now anywhere between 8:30pm and 8:40pm.

    Want to know more from Dr. Breus?

    You might like this excellent book of his that we reviewed a while back:

    The Power of When – by Dr. Michael Breus

    Enjoy!

    Don’t Forget…

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    Learn to Age Gracefully

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