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:
- “Results are conflicting, saying yes/no/maybe, and basically we just don’t know”
- “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:
- Osteoporosis: Is milk a kindness or a curse?
- 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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Scattered Minds – by Dr. Gabor Maté
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This was not the first book that Dr. Maté sat down to write, by far. But it was the first that he actually completed. Guess why.
Writing from a position of both personal and professional experience and understanding, Dr. Maté explores the inaptly-named Attention Deficit Disorder (if anything, there’s often a surplus of attention, just, to anything and everything rather than necessarily what would be most productive in the moment), its etiology, its presentation, and its management.
This is a more enjoyable book than some others by the same author, as while this condition certainly isn’t without its share of woes (often, for example, a cycle of frustration and shame re “why can’t I just do the things; this is ruining my life and it would be so easy if I could just do the things!”), it’s not nearly so bleak as entire books about trauma, addiction, and so forth (worthy as those books also are).
Dr. Maté frames it specifically as a development disorder, and one whereby with work, we can do the development later that (story of an ADHDer’s life) we should have done earlier but didn’t. In terms of practical advice, he includes a program for effecting this change, including as an adult.
The style is easy-reading, in small chapters, with ADHD’d-up readers in mind, giving a strong sense of speeding pleasantly through the book.
Bottom line: when it’s a book by Dr. Gabor Maté, you know it’s going to be good, and this is no exception. Certainly read it if you, anyone you care about, or even anyone you just spend a lot of time around, has ADHD or similar.
Click here to check out Scattered Minds, and unscatter yours!
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Lyme Disease At-A-Glance
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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
❝Good info as always…was wondering if you have any recommendations for fighting Lyme disease naturally along wDr advice? Dr’s aren’t real keen on alternatives so always interested. Thanks❞
That depends on whether we’re looking at prevention or cure!
Prevention:
- Try not to get bitten by Lyme-disease-carrying ticks. Boots and long socks are your friends. As are long-gauntletted gloves for gardening.
- If you are in a high-risk area and/or engage in high-risk activities, check your body daily.
- This is because it usually takes 36–48 hours of being attached for a tick to cause an infection
- Obviously best if you can get a partner or close friend to help you with this, unless you have mastered some advanced pretzel positions of yoga.
- Contrary to many folk remedies, the safest way to remove a tick is with tweezers (carefully!).
- If you find and remove a tick, or otherwise suspect you have developed symptoms, go to your doctor immediately (not next week; today; time really counts for this).
Cure:
- No. Sorry. Regretfully, antibiotics are the only known effective treatment.
However! As with almost any kind of recovery, getting good rest, including good quality sleep, will hasten things. Also sensible is reducing stress if possible, and anything that could worsen inflammation.
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Head Over Hips
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We’ve written before about managing osteoarthritis (or ideally: avoiding it, but that’s not always an option on the table, of course), so here’s a primer/refresher before we get into the meat of today’s article:
Avoiding/Managing Osteoarthritis
When the head gets in the way
Research shows that the problem with recovery in cases of osteoarthritis of the hip is in fact often not the hip itself, but rather, the head:
❝In fact, the stronger your muscles are, the more protected your joint is, and the less pain you will experience.
Our research has shown that people with hip osteoarthritis were unable to activate their muscles as efficiently, irrespective of strength.
Basically, people with hip arthritis are unable to activate their muscles properly because the brain is actively putting on the brake to stop them from using the muscle.❞
This is a case of a short-term protective response being unhelpful in the long-term. If you injure yourself, your brain will try to inhibit you from exacerbating that injury, such as by (for example) disobliging you from putting weight on an injured joint.
This is great if you merely twisted an ankle and just need to sit back and relax while your body works its healing magic, but it’s counterproductive if it’s a chronic issue like osteoarthritis. In such (i.e. chronic) cases, avoidance of use of the joint will simply cause atrophy of the surrounding muscle and other tissues, leading to more of the very wear-and-tear that led to the osteoarthritis in the first place.
So… How to deal with that?
You probably can exercise
It’s easy to get caught between the dichotomy of “exercise and inflame your joints” vs “rest and your joints seize up”, which is not pleasant.
However, the trick lies in how you exercise, per joint type:
When Bad Joints Stop You From Exercising (5 Things To Change)
…which to be clear, isn’t a case of “avoid using the joint that’s bad”, but is rather “use it in this specific way, so that it gets stronger without doing it more damage in the process”.
Which is exactly what is needed!
Further resources
For those who like learning from short videos, here’s a trio of helpers (along with our own text-based overview for each):
- The Most Underrated Hip Mobility Exercise (Not Stretching)
- Overcome Front-Of-Hip Pain
- 10 Tips To Reduce Morning Pain & Stiffness With Arthritis
And for those who prefer just reading, here’s a book we reviewed on the topic:
11 Minutes to Pain-Free Hips – by Melinda Wright
Take care!
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Yes, blue light from your phone can harm your skin. A dermatologist explains
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Social media is full of claims that everyday habits can harm your skin. It’s also full of recommendations or advertisements for products that can protect you.
Now social media has blue light from our devices in its sights.
So can scrolling on our phones really damage your skin? And will applying creams or lotions help?
Here’s what the evidence says and what we should really be focusing on.
Max kegfire/Shutterstock Remind me, what actually is blue light?
Blue light is part of the visible light spectrum. Sunlight is the strongest source. But our electronic devices – such as our phones, laptops and TVs – also emit it, albeit at levels 100-1,000 times lower.
Seeing as we spend so much time using these devices, there has been some concern about the impact of blue light on our health, including on our eyes and sleep.
Now, we’re learning more about the impact of blue light on our skin.
How does blue light affect the skin?
The evidence for blue light’s impact on skin is still emerging. But there are some interesting findings.
1. Blue light can increase pigmentation
Studies suggest exposure to blue light can stimulate production of melanin, the natural skin pigment that gives skin its colour.
So too much blue light can potentially worsen hyperpigmentation – overproduction of melanin leading to dark spots on the skin – especially in people with darker skin.
Blue light can worsen dark spots on the skin caused by overproduction of melanin. DUANGJAN J/Shutterstock 2. Blue light can give you wrinkles
Some research suggests blue light might damage collagen, a protein essential for skin structure, potentially accelerating the formation of wrinkles.
A laboratory study suggests this can happen if you hold your device one centimetre from your skin for as little as an hour.
However, for most people, if you hold your device more than 10cm away from your skin, that would reduce your exposure 100-fold. So this is much less likely to be significant.
3. Blue light can disrupt your sleep, affecting your skin
If the skin around your eyes looks dull or puffy, it’s easy to blame this directly on blue light. But as we know blue light affects sleep, what you’re probably seeing are some of the visible signs of sleep deprivation.
We know blue light is particularly good at suppressing production of melatonin. This natural hormone normally signals to our bodies when it’s time for sleep and helps regulate our sleep-wake cycle.
By suppressing melatonin, blue light exposure before bed disrupts this natural process, making it harder to fall asleep and potentially reducing the quality of your sleep.
The stimulating nature of screen content further disrupts sleep. Social media feeds, news articles, video games, or even work emails can keep our brains active and alert, hindering the transition into a sleep state.
Long-term sleep problems can also worsen existing skin conditions, such as acne, eczema and rosacea.
Sleep deprivation can elevate cortisol levels, a stress hormone that breaks down collagen, the protein responsible for skin’s firmness. Lack of sleep can also weaken the skin’s natural barrier, making it more susceptible to environmental damage and dryness.
Can skincare protect me?
The beauty industry has capitalised on concerns about blue light and offers a range of protective products such as mists, serums and lip glosses.
From a practical perspective, probably only those with the more troublesome hyperpigmentation known as melasma need to be concerned about blue light from devices.
This condition requires the skin to be well protected from all visible light at all times. The only products that are totally effective are those that block all light, namely mineral-based suncreens or some cosmetics. If you can’t see the skin through them they are going to be effective.
But there is a lack of rigorous testing for non-opaque products outside laboratories. This makes it difficult to assess if they work and if it’s worth adding them to your skincare routine.
What can I do to minimise blue light then?
Here are some simple steps you can take to minimise your exposure to blue light, especially at night when it can disrupt your sleep:
- use the “night mode” setting on your device or use a blue-light filter app to reduce your exposure to blue light in the evening
- minimise screen time before bed and create a relaxing bedtime routine to avoid the types of sleep disturbances that can affect the health of your skin
- hold your phone or device away from your skin to minimise exposure to blue light
- use sunscreen. Mineral and physical sunscreens containing titanium dioxide and iron oxides offer broad protection, including from blue light.
In a nutshell
Blue light exposure has been linked with some skin concerns, particularly pigmentation for people with darker skin. However, research is ongoing.
While skincare to protect against blue light shows promise, more testing is needed to determine if it works.
For now, prioritise good sun protection with a broad-spectrum sunscreen, which not only protects against UV, but also light.
Michael Freeman, Associate Professor of Dermatology, Bond University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Blueberry & Banana Collagen Baked Oats
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Good news for vegans/vegetarians! While we include an optional tablespoon of collagen powder in this recipe, the whole recipe is already geared around collagen synthesis, so it’s very collagen-boosting even with just the plants, providing collagen’s building blocks of protein, zinc, and vitamins C and D (your miraculous body will use these to assemble the collagen inside you).
You will need
- 2 cups oats, whence the protein and zinc
- 1 cup milk (your preference what kind; we recommend almond for flavor; whether you choose plant or animal though, it should be fortified with vitamin D)
- 2 bananas, peeled and mashed
- 4 oz blueberries, whence the vitamin C (frozen is fine) (chopped dried apricots are also a fine substitute if that’s more convenient)
- 1 oz flaked almonds, whence the protein and zinc
- 1 tbsp pumpkin seeds, whence the protein and zinc
- 1 tbsp flax seeds, whence the protein and zinc
- Optional: 1 tbsp maple syrup
- Optional: 1 tbsp collagen powder, dissolved in 1 oz hot water
Method
(we suggest you read everything at least once before doing anything)
1) Preheat the oven to 350℉ / 180℃.
2) Mix the oats with 2 cups boiling water; allow to stand for 10–15 minutes, and then drain any excess water.
3) Mix the mashed bananas with the remaining ingredients except the milk and blueberries, stirring thoroughly.
4) Add the softened oats, and stir those in thoroughly too.
5) Add the milk and blueberries, in that order, stirring gently if using fresh blueberries, lest they get crushed.
6) Pour the mixture into an 8″ square cake tin that you have lined with baking paper, and smooth the top.
7) Bake for about 40 minutes or until firm and golden brown. Allow to cool; it will firm up more while it does.
8) Cut into squares or bars, and serve or store for later.
Enjoy!
Want to learn more?
For those interested in some of the science of what we have going on today:
We Are Such Stuff As Fish Are Made Of ← our main feature about collagen
Take care!
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The Mind-Gut Connection – by Dr. Emeran Mayer
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We’ve reviewed books about the mind-gut connection before, so what makes this one stand out?
Firstly, it’s a lot more comprehensive than the usual “please, we’re begging you, eat some fiber”.
And yes, of course that’s part of it. Prebiotics, probiotics, reduce fried and processed foods, reduce sugar/alcohol, reduce meat, and again, eat some greenery.
But where this book really comes into its own is looking more thoroughly at the gut microbiota and their function. Dr. Mayer goes well beyond “there are good and bad bacteria” and looks at the relationship each of them have with the body’s many hormones, and especially neurotransmitters like serotonin and dopamine.
He also looks at the two-way connection between brain and gut. Yes, our gut gives us “gut feelings”, but 10% of communication between the brain and gut is in the other direction; he explores what that means for us, too.
Finally, he does give a lot of practical advice, not just dietary but also behavioral, to make the most of our mind-gut connection and make it work for our health, rather than against it.
Bottom line: this is the best book on the brain-gut connection that this reviewer has read so far, and certainly the most useful if you already know about gut-healthy nutrition, and are looking to take your understanding to the next level.
Click here to check out The Mind-Gut Connection, and start making yours work for your benefit!
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