Eat All You Want (But Wisely)
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Some Surprising Truths About Hunger And Satiety
This is Dr. Barbara Rolls. She’s Professor and Guthrie Chair in Nutritional Sciences, and Director of the Laboratory for the Study of Human Ingestive Behavior at Pennsylvania State University, after graduating herself from Oxford and Cambridge (yes, both). Her “awards and honors” take up four A4 pages, so we won’t list them all here.
Most importantly, she’s an expert on hunger, satiety, and eating behavior in general.
What does she want us to know?
First and foremost: you cannot starve yourself thin, unless you literally starve yourself to death.
What this is about: any weight lost due to malnutrition (“not eating enough” is malnutrition) will always go back on once food becomes available. So unless you die first (not a great health plan), merely restricting good will always result in “yo-yo dieting”.
So, to avoid putting the weight back on and feeling miserable every day along the way… You need to eat as much as you feel you need.
But, there’s a trick here (it’s about making you genuinely feel you need less)!
Your body is an instrument—so play it
Your body is the tool you use to accomplish pretty much anything you do. It is, in large part, at your command. Then there are other parts you can’t control directly.
Dr. Rolls advises taking advantage of the fact that much of your body is a mindless machine that will simply follow instructions given.
That includes instructions like “feel hungry” or “feel full”. But how to choose those?
Volume matters
An important part of our satiety signalling is based on a physical sensation of fullness. This, by the way, is why bariatric surgery (making a stomach a small fraction of the size it was before) works. It’s not that people can’t eat more (the stomach is stretchy and can also be filled repeatedly), it’s that they don’t want to eat more because the pressure sensors around the stomach feel full, and signal the hormone leptin to tell the brain we’re full now.
Now consider:
- On the one hand, 20 grapes, fresh and bursting with flavor
- On the other hand, 20 raisins (so, dried grapes), containing the same calories
Which do you think will get the leptin flowing sooner? Of course, the fresh grapes, because of the volume.
So if you’ve ever seen those photos that show two foods side by side with the same number of calories but one is much larger (say, a small slice of pizza or a big salad), it’s not quite the cheap trick that it might have appeared.
Or rather… It is a cheap trick; it’s just a cheap trick that works because your stomach is quite a simple organ.
So, Dr. Rolls’ advice: generally speaking, go for voluminous food. Fruit is great from this, because there’s so much water. Air-popped popcorn also works great. Vegetables, too.
Water matters, but differently than you might think
A well-known trick is to drink water before and with a meal. That’s good, it’s good to be hydrated. However, it can be better. Dr. Rolls did an experiment:
The design:
❝Subjects received 1 of 3 isoenergetic (1128 kJ) preloads 17 min before lunch on 3 d and no preload on 1 d.
The preloads consisted of 1) chicken rice casserole, 2) chicken rice casserole served with a glass of water (356 g), and 3) chicken rice soup.
The soup contained the same ingredients (type and amount) as the casserole that was served with water.❞
The results:
❝Decreasing the energy density of and increasing the volume of the preload by adding water to it significantly increased fullness and reduced hunger and subsequent energy intake at lunch.
The equivalent amount of water served as a beverage with a food did not affect satiety.❞
The conclusion:
❝Consuming foods with a high water content more effectively reduced subsequent energy intake than did drinking water with food.❞
You can read the study in full (it’s a worthwhile read!) here:
Water incorporated into a food but not served with a food decreases energy intake in lean women
Protein matters
With all those fruits and vegetables and water, you may be wondering Dr. Rolls’ stance on proteins. It’s simple: protein is an appetite suppressant.
However, it takes about 20 minutes to signal the brain about that, so having some protein in a starter (if like this writer, you’re the cook of the household, a great option is to enjoy a small portion of nuts while cooking!) gets that clock ticking, to signal satiety sooner.
It may also help in other ways:
Clinical Evidence and Mechanisms of High-Protein Diet-Induced Weight Loss
As for other foods that can suppress appetite, by the way, you might like;
25 Foods That Act As Natural Appetite Suppressants
Variety matters, and in ways other than you might think
A wide variety of foods (especially: a wide variety of plants) in one’s diet is well recognized as a key to a good balanced diet.
However…
A wide variety of dishes at the table, meanwhile, promotes greater consumption of food.
Dr. Rolls did a study on this too, a while ago now (you’ll see how old it is) but the science seems robust:
Variety in a Meal Enhances Food Intake in Man
Notwithstanding the title, it wasnot about a man (that was just how scientists wrote in ye ancient times of 1981). The test subjects were, in order: rats, cats, a mixed group of men and women, the same group again, and then a different group of all women.
So, Dr. Rolls’ advice is: it’s better to have one 20-ingredient dish, than 10 dishes with 20 ingredients between them.
Sorry! We love tapas and buffets too, but that’s the science!
So, “one-pot” meals are king in this regard; even if you serve it with one side (reasonable), that’s still only two dishes, which is pretty good going.
Note that the most delicious many-ingredient stir-fries and similar dishes from around the world also fall into this category!
Want to know more?
If you have the time (it’s an hour), you can enjoy a class of hers for free:
Want to watch it, but not right now? Bookmark it for later
Enjoy!
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Fluoride Toothpaste vs Non-Fluoride Toothpaste – Which is Healthier?
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Our Verdict
When comparing fluoride toothpaste to non-fluoride toothpaste, we picked the fluoride.
Why?
Fluoride is indeed toxic; that’s why it’s in toothpaste (to kill things; namely, bacteria whose waste products would harm our teeth). However, we are much bigger than those bacteria.
Given the amount of fluoride in toothpaste (usually under 1mg per strip of toothpaste to cover a toothbrush head), the amount that people swallow unintentionally (about 1/20th of that, so about 0.1mg daily if brushing teeth twice daily), and the toxicity level of fluoride (32–64mg/kg), then even if we take the most dangerous ends of all those numbers (and an average body size), to suffer ill effects from fluoride due to brushing your teeth, would require that you brush your teeth more than 23,000 times per day.
Alternatively, if you were to ravenously eat the toothpaste instead of spitting it out, you’d only need to brush your teeth a little over 1,000 times per day.
All the same, please don’t eat toothpaste; that’s not the message here.
However! In head-to-head tests, fluoride toothpaste has almost always beaten non-fluoride toothpaste.
Almost? Yes, almost: hydroxyapatite performed equally in one study, but that’s not usually an option on as many supermarket shelves.
We found some on Amazon, though, which is the one we used for today’s head-to-head. Here it is:
However, before you rush to buy it, do be aware that the toxicity of hydroxyapatite appears to be about twice that of fluoride:
Scientific Committee on Consumer Safety Opinion On Hydroxyapatite (Nano)
…which is still very safe (you’d need to brush your teeth, and eat all the toothpaste, about 500 times per day, to get to toxic levels, if we run with the same numbers we discussed before. Again, please do not do that, though).
But, since the science so far suggests it’s about twice as toxic as fluoride, then regardless of that still being very safe, the fluoride is obviously (by the same metric) twice as safe, hence picking the fluoride.
Want more options?
Check out our previous main feature:
Less Common Oral Hygiene Options
(the above article also links back to our discussion of different toothpastes and mouthwashes, by the way)
Take care!
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The How Not to Die Cookbook – by Dr. Michael Greger
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We’ve previously reviewed Dr. Greger’s “How Not To Die”, which is excellent and/but very science-dense.
This book is different, in that the science is referenced and explained throughout, but the focus is the recipes, and how to prepare delicious healthy food in accordance with the principles laid out in How Not To Die.
It also follows “Dr Greger’s Daily Dozen“, that is to say, the 12 specific things he advises we make sure to have every day, and thus helps us to include them in an easy, no-fuss fashion.
The recipes themselves are by Robin Robertson, and/but with plenty of notes by Dr Greger; they clearly collaborated closely in creating them.
The ingredients are all things one can find in any well-stocked supermarket, so unless you live in a food desert, you can make these things easily.
And yes, the foods are delicious too.
Bottom line: if you’re interested in cooking according to perhaps the most science-based dietary system out there, then this book is a top-tier choice.
Click here to check out The How Not To Die Cookbook, and live well!
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Walnuts vs Pecans – Which is Healthier?
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Our Verdict
When comparing walnuts to pecans, we picked the walnuts.
Why?
It was very close, though, and an argument could be made for pecans! Walnuts are nevertheless always a very good bet, and so far in our This-or-That comparisons, the only nut to beat them so far as been almonds, and that was very close too.
In terms of macros, walnuts have a lot more protein, while pecans have a little more fiber (for approximately the same carbs). Both are equally fatty (near enough; technically pecans have a little more) but where the walnuts stand out in the fat category is that while pecans have mostly healthy monounsaturated fats, walnuts have mostly healthy polyunsaturated fats, including including a good balance of omega-3 and omega-6 fatty acids. So, while we do love the extra fiber from pecans, we’re calling it for walnuts in the macros category, on account of the extra protein and the best lipids profile (not that pecans’ lipids profile is bad by any stretch; just, walnuts have it better).
In the vitamins category, walnuts have more of vitamins B2, B6, B9, and C, while pecans offer more of vitamins A, B1, B3, B5, E, K, and choline. The margins aren’t huge and walnuts are also excellent for all the vitamins that pecans narrowly beat them on, but still, the vitamins category is a win for pecans.
When it comes to minerals, walnuts take back the crown; walnuts offer more calcium, copper, iron, magnesium, phosphorus, potassium, and selenium, while pecans have a little more manganese and zinc. Once again, the margins aren’t huge and pecans are also excellent for all the minerals that walnuts narrowly beat them on, but still, the minerals category is a win for walnuts.
In short: enjoy both of these nuts for their healthy fats, vitamins, minerals, protein, and fiber, but if you’re going to pick one, walnuts come out on top.
Want to learn more?
You might like to read:
Why You Should Diversify Your Nuts!
Take care!
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Cows’ Milk, Bird Flu, & You
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When it comes to dairy products, generally speaking, fermented ones (such as most cheeses and yogurts) are considered healthy in moderation, and unfermented ones have their pros and cons that can be argued and quibbled “until the cows come home”. We gave a broad overview, here:
Furthermore, you may recall that there’s some controversy/dissent about when human babies can have cows’ milk:
When can my baby drink cow’s milk? It’s sooner than you think
So, what about bird flu now?
Earlier this year, the information from the dairy industry was that it was nothing to be worried about for the time being:
Bird Flu Is Bad for Poultry and Dairy Cows. It’s Not a Dire Threat for Most of Us — Yet.
More recently, the latest science has found:
❝We found a first-order decay rate constant of −2.05 day–1 equivalent to a T99 of 2.3 days. Viral RNA remained detectable for at least 57 days with no degradation. Pasteurization (63 °C for 30 min) reduced infectious virus to undetectable levels and reduced viral RNA concentrations, but reduction was less than 1 log10.
The prolonged persistence of viral RNA in both raw and pasteurized milk has implications for food safety assessments and environmental surveillance❞
You can find the study here:
Infectivity and Persistence of Influenza A Virus in Raw Milk
In short: raw milk keeps the infectious virus; pasteurization appears to render it uninfectious, though viral RNA remains present.
This is relevant, because of the bird flu virus being found in milk:
World Health Organization | H5N1 strain of bird flu found in milk
To this end, a moratorium has been placed on the sale of raw milk, first by the California Dept of Public Health (following an outbreak in California):
California halts sales of raw milk due to bird flu virus contamination
And then, functionally, by the USDA, though rather than an outright ban, it’s requiring testing for the virus:
USDA orders testing of milk supply for presence of bird flu virus
So, is pasteurized milk safe?
The official answer to this, per the FDA, is… Honestly, a lot of hand-wringing and shrugging. What we do know is:
- the bird flu virus has been found in pasteurized milk too
- the test for this is very sensitive, and has the extra strength/weakness that viral fragments will flag it as a positive
- it is assumed that the virus was inactivated by the pasteurization process
- it could, however, have been the entire virus, the test simply does not tell us which
In the FDA’s own words:
❝The pasteurization process has served public health well for more than 100 years. Even if the virus is detected in raw milk, pasteurization is generally expected to eliminate pathogens to a level that does not pose a risk to consumer health❞
So, there we have it: the FDA does not have a reassurance exactly, but it does have a general expectation.
Source: US Officials: Bird flu viral fragments found in pasteurized milk
Want to know more?
You might like this mythbusting edition we did a little while back:
Pasteurization: What It Does And Doesn’t Do ← this is about its effect on risks and nutrients
Take care!
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5 Ways To Make Your Smoothie Blood Sugar Friendly (Avoid the Spike!)
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At 10almonds, we are often saying “eat whole fruit; don’t drink your calories”. Whole fruit is great for blood sugars; fruit juices and many smoothies on the other hand, not so much. Especially juices, being near-completely or perhaps even completely stripped of fiber, but even smoothies have had a lot of the fiber broken down and are still a liquid, meaning they are very quickly and easily digestible, and thus their sugars (whatever carbs are in there) can just zip straight into your veins.
However, there are ways to mitigate this…
Slow it down
The theme here is “give the digestive process something else to do”; some things are more quickly and easily digestible than others, and if it’s working on breaking down some of the slower things, it’s not waving sugars straight on through; they have to wait their turn.
To that end, recommendations include:
- Full-fat Greek yogurt which provides both protein and fat, helping to slow down the absorption of sugar. Always choose unsweetened versions to avoid added sugars, though!
- Coconut milk (canned) which is low in sugar and carbs, high in fat. This helps reduce blood sugar spikes, as she found through personal experimentation too.
- Avocado which is rich in healthy fats that help stabilize blood sugar. As a bonus, it blends well into smoothies without affecting the taste much.
- Coconut oil which contains medium-chain triglycerides (MCTs) that are quickly absorbed for energy without involving glucose, promoting fat-burning and reducing blood sugar spikes.
- Collagen powder which is a protein that helps lower blood sugar spikes while also supporting muscle growth, skin, and joints.
For more on all of these, enjoy:
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Want to learn more?
You might also like to read:
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A Fresh Take On Hypothyroidism
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The Three Rs To Boost Thyroid-Related Energy Levels
This is Dr. Izabella Wentz. She’s a doctor of pharmacology, and after her own diagnosis with Hashimoto’s thyroiditis, she has taken it up as her personal goal to educate others on managing hypothyroidism.
Dr. Wentz is also trained in functional medicine through The Institute for Functional Medicine, Kalish Functional Medicine, and the American Academy of Anti-Aging Medicine. She is a Fellow of the American Society of Consultant Pharmacists, and holds certifications in Medication Therapy Management as well as Advanced Diabetes Care through the American Pharmacists Association. In 2013, she received the Excellence in Innovation Award from the Illinois Pharmacists Association.
Dr. Wentz’s mission
Dr. Wentz was disenchanted by the general medical response to hypothyroidism in three main ways. She tells us:
- Thyroid patients are not diagnosed appropriately.
- For this, she criticises over-reliance on TSH tests that aren’t a reliable marker of thyroid function, especially if you have Hashimoto’s.
- Patients should be better optimized on their medications.
- For this, she criticizes many prescribed drugs that are actually pro-drugs*, that don’t get converted adequately if you have an underactive thyroid.
- Lifestyle interventions are often ignored by mainstream medicine.
- Medicines are great; they truly are. But medicating without adjusting lifestyle can be like painting over the cracks in a crumbling building.
*a “pro-drug” is what it’s called when the drug we take is not the actual drug the body needs, but is a precursor that will get converted to that actual drug we need, inside our body—usually by the liver, but not always. An example in this case is T4, which by definition is a pro-drug and won’t always get correctly converted to the T3 that a thyroid patient needs.
Well that does indeed sound worthy of criticism. But what does she advise instead?
First, she recommends a different diagnostic tool
Instead of (or at least, in addition to) TSH tests, she advises to ask for TPO tests (thyroid peroxidase), and a test for Tg antibodies (thyroglobulin). She says these are elevated for many years before a change in TSH is seen.
Next, identify the root cause and triggers
These can differ from person to person, but in countries that add iodine to salt, that’s often a big factor. And while gluten may or may not be a factor, there’s a strong correlation between celiac disease and Hashimoto’s disease, so it is worth checking too. Same goes for lactose.
By “checking”, here we mean testing eliminating it and seeing whether it makes a difference to energy levels—this can be slow, though, so give it time! It is best to do this under the guidance of a specialist if you can, of course.
Next, get to work on repairing your insides.
Remember we said “this can be slow”? It’s because your insides won’t necessarily bounce back immediately from whatever they’ve been suffering from for what’s likely many years. But, better late than never, and the time will pass anyway, so might as well get going on it.
For this, she recommends a gut-healthy diet with specific dietary interventions for hypothyroidism. Rather than repeat ourselves unduly here, we’ll link to a couple of previous articles of ours, as her recommendations match these:
She also recommends regular blood testing to see if you need supplementary TSH, TPO antibodies, and T3 and T4 hormones—as well as vitamin B12.
Short version
After diagnosis, she recommends the three Rs:
- Remove the causes and triggers of your hypothyroidism, so far as possible
- Repair the damage caused to your body, especially your gut
- Replace the thyroid hormones and related things in which your body has become deficient
Learn more
If you’d like to learn more about this, she offers a resource page, with resources ranging from on-screen information, to books you can get, to links to hook you up with blood tests if you need them, as well as recommended supplements to consider.
She also has a blog, which has an interesting relevant article added weekly.
Enjoy, and take care of yourself!
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- Thyroid patients are not diagnosed appropriately.
