Life Lessons From A Brain Surgeon – by Dr. Rahul Jandial
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In the category of surgeons with a “what to put on your table to stay off mine” angle, this book packs an extra punch. As well as being an experienced brain surgeon, Dr. Jandial also does a lot of cutting edge lab research too. What does this mean for us?
This book gives, as the subtitle promises, “practical strategies for peak health and performance”—with a brain-centric bias, of course.
From diet and nootropic supplements, to exercise and brain-training, we get a good science-based view of which ones actually work, and which don’t. The style is also very readable; Dr. Jandial is a great educator, presenting genuine scientific content with very accessible language.
Bottom line: if you’d indeed like to look after your most important organ optimally, this book gives a lot of key pointers, without unnecessary fluff.
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Sweet Dreams Are Made Of Cheese (Or Are They?)
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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
❝In order to lose a little weight I have cut out cheese from my diet – and am finding that I am sleeping better. Would be interested in your views on cheese and sleep, and whether some types of cheese are worse for sleep than others. I don’t want to give up cheese entirely!❞
In principle, there’s nothing in cheese that, biochemically, should impair sleep. If anything, its tryptophan content could aid good sleep.
Tryptophan is found in many foods, including cheese, which (of common foods, anyway), for example cheddar cheese ranks second only to pumpkin seeds in tryptophan content.
Tryptophan can be converted by the body into 5-HTP, which you’ve maybe seen sold as a supplement. Its full name is 5-hydroxytryptophan.
5-HTP can, in turn, be used to make melatonin and/or serotonin. Which of those you will get more of, depends on what your body is being cued to do by ambient light/darkness, and other environmental cues.
If you are having cheese and then checking your phone, for instance, or otherwise hanging out where there are white/blue lights, then your body may dutifully convert the tryptophan into serotonin (calm wakefulness) instead of melatonin (drowsiness and sleep).
In short: the cheese will (in terms of this biochemical pathway, anyway) augment some sleep-inducing or wakefulness-inducing cues, depending on which are available.
You may be wondering: what about casein?
Casein is oft-touted as producing deep sleep, or disturbed sleep, or vivid dreams, or bad dreams. There’s no science to back any of this up, though the following research review is fascinating:
Dreams of the Rarebit Fiend: food and diet as instigators of bizarre and disturbing dreams
(it largely supports the null hypothesis of “not a causal factor” but does look at the many more likely alternative explanations, ranging from associated actually casual factors (such as alcohol and caffeine) and placebo/nocebo effect)
Finally, simple digestive issues may be the real thing at hand:
Worth noting that around two thirds of all people, including those who regularly enjoy dairy products, have some degree of lactose intolerance:
Lactose Intolerance in Adults: Biological Mechanism and Dietary Management
So, in terms of what cheese may be better/worse for you in this context, you might try experimenting with lactose-free cheese, which will help you identify whether that was the issue!
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Do We Need Supplements, And Do They Work?
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Does our diet need a little help?
We asked you for your take on supplements, and got the above-illustrated, below-described set of results.
- The largest minority of respondents (a little over a third) voted for “I just take something very specific”
- The next most respondents voted for “I take so many supplements; every little helps!”
- Almost as many voted for “I just take a vitamin or two / a multivitamin”
- Fewest, about 8%, voted for “I get everything I need from my diet”
But what does the science say?
Food is less nutritious now than it used to be: True or False?
True or False depending on how you measure it.
An apple today and an apple from a hundred years ago are likely to contain the same amounts of micronutrients per apple, but a lower percentage of micronutrients per 100g of apple.
The reason for this is that apples (and many other food products; apples are just an arbitrary example) have been selectively bred (and in some cases, modified) for size, and because the soil mineral density has remained the same, the micronutrients per apple have not increased commensurate to the increase in carbohydrate weight and/or water weight. Thus, the resultant percentage will be lower, despite the quantity remaining the same.
We’re going to share some science on this, and/but would like to forewarn readers that the language of this paper is a bit biased, as it looks to “debunk” claims of nutritional values dropping while skimming over “yes, they really have dropped percentage-wise” in favor of “but look, the discrete mass values are still the same, so that’s just a mathematical illusion”.
The reality is, it’s no more a mathematical illusion than is the converse standpoint of saying the nutritional value is the same, despite the per-100g values dropping. After all, sometimes we eat an apple as-is; sometimes we buy a bag of frozen chopped fruit. That 500g bag of chopped fruit is going to contain less copper (for example) than one from decades past.
Here’s the paper, and you’ll see what we mean:
Supplements aren’t absorbed properly and thus are a waste of money: True or False?
True or False depending on the supplement (and your body, and the rest of your diet)
Many people are suffering from dietary deficiencies of vitamins and minerals, that could be easily correctable by supplementation:
However, as this study by Dr. Fang Fang Zhang shows, a lot of vitamin and mineral supplementation does not appear to have much of an effect on actual health outcomes, vis-à-vis specific diseases. She looks at:
- Cardiovascular disease
- Cancer
- Type 2 diabetes
- Osteoporosis
Her key take-aways from this study were:
- Randomised trial evidence does not support use of vitamin, mineral, and fish oil supplements to reduce the risk of non-communicable diseases
- People using supplements tend to be older, female, and have higher education, income, and healthier lifestyles than people who do not use them
- Use of supplements appreciably reduces the prevalence of inadequate intake for most nutrients but also increases the prevalence of excess intake for some nutrients
- Further research is needed to assess the long term effects of supplements on the health of the general population and in individuals with specific nutritional needs, including those from low and middle income countries
Read her damning report: Health effects of vitamin and mineral supplements
On the other hand…
This is almost entirely about blanket vitamin-and-mineral supplementation. With regard to fish oil supplementation, many commercial fish oil supplements break down in the stomach rather than the intestines, and don’t get absorbed well. Additionally, many people take them in forms that aren’t pleasant, and thus result in low adherence (i.e., they nominally take them, but in fact they just sit on the kitchen counter for a year).
One thing we can conclude from this is that it’s good to check the science for any given supplement before taking it, and know what it will and won’t help for. Our “Monday Research Review” editions of 10almonds do this a lot, although we tend to focus on herbal supplements rather than vitamins and minerals.
We can get everything we need from our diet: True or False?
Contingently True (but here be caveats)
In principle, if we eat the recommended guideline amounts of various macro- and micro-nutrients, we will indeed get all that we are generally considered to need. Obviously.
However, this may come with:
- Make sure to get enough protein… Without too much meat, and also without too much carbohydrate, such as from most plant sources of protein
- Make sure to get enough carbohydrates… But only the right kinds, and not too much, nor at the wrong time, and without eating things in the wrong order
- Make sure to get enough healthy fats… Without too much of the unhealthy fats that often exist in the same foods
- Make sure to get the right amount of vitamins and minerals… We hope you have your calculators out to get the delicate balance of calcium, magnesium, potassium, phosphorus, and vitamin D right.
That last one’s a real pain, by the way. Too much or too little of one or another and the whole set start causing problems, and several of them interact with several others, and/or compete for resources, and/or are needed for the others to do their job.
And, that’s hard enough to balance when you’re taking supplements with the mg/µg amount written on them, never mind when you’re juggling cabbages and sardines.
On the topic of those sardines, don’t forget to carefully balance your omega-3, -6, and -9, and even within omega-3, balancing ALA, EPA, and DHA, and we hope you’re juggling those HDL and LDL levels too.
So, when it comes to getting everything we need from our diet, for most of us (who aren’t living in food deserts and/or experiencing food poverty, or having a medical condition that restricts our diet), the biggest task is not “getting enough”, it’s “getting enough of the right things without simultaneously overdoing it on the others”.
With supplements, it’s a lot easier to control what we’re putting in our bodies.
And of course, unless our diet includes things that usually can’t be bought in supermarkets, we’re not going to get the benefits of taking, as a supplement, such things as:
Etc.
So, there definitely are supplements with strong science-backed benefits, that probably can’t be found on your plate!
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The Brain-Skin Doctor
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Of Brains And Breakouts
Today’s spotlight is on Dr. Claudia Aguirre. She’s a molecular neuroscientist, and today she’s going to be educating us about skin.
What? Why?
When we say “neuroscience”, we generally think of the brain. And indeed, that’s a very important part of it.
We might think about eyes, which are basically an extension of the brain.
We don’t usually think about skin, which (just like our eyes) is constantly feeding us a lot of information about our surroundings, via a little under three million nerve endings. Guess where the other ends of those nerves lead!
There’s a constant two-way communication going on between our brain and our skin.
What does she want us to know?
Psychodermatology
The brain and the skin talk to each other, and maladies of one can impact the other:
- Directly, e.g. stress prompting skin breakouts (actually this is a several-step process physiologically, but for the sake of brevity we’ll call this direct)
- Indirectly, e.g. nervous disorders that result in people scratching or picking at their skin, which prompts a whole vicious cycle of one thing making the other worse
Read more: Psychodermatology: The Brain-Skin Connection
To address both kinds of problems, clearly something beyond moisturizer is needed!
Mindfulness (meditation and beyond)
Mindfulness is a well-evidenced healthful practice for many reasons, and Dr. Aguirra argues the case for it being good for our skin too.
As she points out,
❝Cultural stress and anxiety can trigger or aggravate many skin conditions—from acne to eczema to herpes, psoriasis, and rosacea.
Conversely, a disfiguring skin condition can trigger stress, anxiety, depression, and even suicide.
Chronic, generalized anxiety can create chronic inflammation and exacerbate inflammatory skin conditions, such as those I mentioned previously.
Chronic stress can result in chronic anxiety, hypervigilance, poor sleep, and a whole cascade of effects resulting in a constant breakdown of tissues and organs, including the skin.❞
So, she recommends mindfulness-based stress reduction (MBSR), for the above reasons, along with others!
Read more: Mind Matters
How to do it: No-Frills, Evidence-Based Mindfulness
And as for “and beyond?”
Do you remember in the beginning of the pandemic, when people were briefly much more consciously trying to avoid touching their faces so much? That, too, is mindfulness. It may have been a stressed and anxious mindfulness for many*, but mindfulness nonetheless.
*which is why “mindfulness-based stress reduction” is not a redundant tautology repeated more than once unnecessarily, one time after another 😉
So: do try to keep aware of what you are doing to your skin, and so far as is reasonably practicable, only do the things that are good for it!
The skin as an endocrine organ
Nerves are not the only messengers in the body; hormones do a lot of our body’s internal communication too. And not just the ones everyone remembers are hormones (e.g. estrogen, testosterone, although yes, they do both have a big impact on skin too), but also many more, including some made in the skin itself!
Dr. Aguirra gives us a rundown of common conditions, the hormones behind them, and what we can do if we don’t want them:
Read more: Rethinking The Skin As An Endocrine Organ
Take-away advice:
For healthy skin, we need to do more than just hydrate, get good sleep, have good nutrition, and get a little sun (but not too much).
- We should also practice mindfulness-based stress reduction, and seek help for more serious mental health issues.
- We should also remember the part our hormones play in our skin, and not just the obvious ones.
Did you know that vitamin D is also a hormone, by the way? It’s not the only hormone at play in your skin by a long way, but it is an important one:
Society for Endocrinology | Vitamin D
Want to know more?
You might like this interview with Dr. Aguirre:
The Brain in Our Skin: An Interview with Dr. Claudia Aguirre
Take care!
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What We Don’t Talk About When We Talk About Fat – by Aubrey Gordon
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There are books aplenty to encourage and help you to lose weight. This isn’t one of those.
There are also books aplenty to encourage and help you to accept yourself and your body at the weight you are, and forge self-esteem. This isn’t one of those, either—in fact, it starts by assuming you already have that.
There are fair arguments for body neutrality, and fat acceptance. Very worthy also is the constant fight for bodily sovereignty.
These are worthy causes, but they’re for the most-part not what our author concerns herself with here. Instead, she cares for a different and very practical goal: fat justice.
In a world where you may be turned away from medical treatment if you are over a certain size, told to lose half your bodyweight before you can have something you need, she demands better. The battle extends further than healthcare though, and indeed to all areas of life.
Ultimately, she argues, any society that will disregard the needs of the few because they’re a marginal demographic, is a society that will absolutely fail you if you ever differ from the norm in some way.
All in all, an important (and for many, perhaps eye-opening) book to read if you are fat, care about fat people, are a person of any size, or care about people in general.
Pick Up Your Copy of “What We Don’t Talk About When We Talk About Fat”, on Amazon Today!
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The Better Brain – by Dr. Bonnie Kaplan and Dr. Julia Rucklidge
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We’ve reviewed books about eating for brain health before, but this is the first time we’ve reviewed one written by clinical psychologists.
What does that change? Well, it means it less focus on, say, reducing beta amyloid plaques, and more on mental health—which often has a more immediate impact in our life.
In the category of criticisms, the authors do seem to have a bit of a double-standard. For example, they criticise psychiatrists prescribing drugs that have only undergone 12-week clinical trials, but they cite a single case-study of a 10-year-old boy as evidence for a multivitamin treating his psychosis when antipsychotics didn’t work.
However, the authors’ actual dietary advice is nonetheless very respectable. Whole foods, nutrients taken in synergistic stacks, cut the sugar, etc.
Bottom line: if you’d like to learn about the impact good nutrition can have on the brain’s health, ranging from diet itself to dietary supplements, this book presents many avenues to explore.
Click here to check out “The Better Brain”, and eat for the good health of yours!
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Carrot vs Kale – Which is Healthier?
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Our Verdict
When comparing carrot to kale, we picked the kale.
Why?
These are both known as carotene-containing heavyweights, but kale emerges victorious:
In terms of macros, carrot has more carbs while kale has more protein and fiber. An easy win there for kale.
When it comes to vitamins, both are great! But, carrots contain more of vitamins A, B5, and choline, whereas kale contains more of vitamins B1, B2, B3, B6, B9, C, E, and K. And while carrot’s strongest point is vitamin A, a cup of carrots contains around 10x the recommended daily dose of vitamin A, whereas a cup of kale contains “only” 6x the recommended daily dose of vitamin A. So, did we really need the extra in carrots? Probably not. In any case, kale already won on overall vitamin coverage, by a long way.
In the category of minerals, kale again sweeps. On the one hand, carrots contain more sodium. On the other hand, kale contains a lot more calcium, copper, iron, magnesium, manganese, phosphorus, potassium, selenium, and zinc. Not a tricky choice!
But don’t be fooled: carrots really are a nutritional powerhouse and a great food. Kale is just better—nutritionally speaking, in any case. If you’re making a carrot cake, please don’t try substituting kale; it will not work 😉
Want to learn more?
You might like to read:
Take care!
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