Tech Bliss – by Clo S., MSc.
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The popular idea of a “digital detox” is simple enough, “just unplug!”, they say.
But here in the real world, not only is that often not practical for many of us, it may not always even be entirely desirable. The Internet (and our devices with all their bells and whistles) can be a source of education, joy, and connection!
So, how to find out what’s good for us and what’s not, in our daily digital practices? Clo. S. has answers… Or rather, experiments for us to do and find out for ourselves.
These experiments range from the purely practical “try this to streamline your experience” to the more personal “how does this thing make you feel?”. A lot of the experiments will be performed via your digital devices—some, without! Others are about online interpersonal dynamics, be they one-on-one or navigating a world in which it seems everyone is out to get us, our outrage, and/or our money. Still yet others are about optimizing what you do get from the parts of your digital experience that are enriching for you.
As the title suggests, there are 30 experiments, and it’s not a stretch to do them one per day for a month. But, as the author notes, it’s by no means necessary to do them like that; it’s a workbook and reference guide, not a to-do list!
(On the topic of it being a reference guide…There’s also an extensive tools directory towards the end!)
In short: this is a great book for optimizing your online experience—whatever that might mean for you personally; you can decide for yourself along the way!
Click here to get a copy of Tech Bliss: 30 Experiments For Your Digital Wellness today!
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53 Studies Later: The Best Way to Improve VO2 Max
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VO2 max measures maximum oxygen usage during intense exercise and reflects overall health and performance. To have a high VO2 max, efficient functioning of lungs, heart, red blood cells, muscles, and mitochondria is crucial. So, how to get those?
Let’s HIIT it!
High-Intensity Interval Training (HIIT) outperforms moderate-intensity exercise, by a long way. Further, based on the data from the 53 studies mentioned in the title, we can know which of the protocols tested work best, and they are:
- 15×15 Interval Training: 15 seconds sprint (90–95% max heart rate) + 15 seconds active rest (70% max heart rate), repeated 47 times.
- 4×4 Interval Training: 4 minutes sprint (90–95% max heart rate) + 3 minutes active rest (70% max heart rate), repeated 4 times.
Whichever you choose, it is best to then do that 3x per week.
Note that “sprint” can mean any maximum-effort cardio exercise; it doesn’t have to be running specifically. Cycling or swimming, for example, are fine options too, as is jumping rope.
For more on each of these, plus how the science got there, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
How To Do HIIT (Without Wrecking Your Body)
Take care!
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Calm Your Mind with Food – by Dr. Uma Naidoo
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From the author of This Is Your Brain On Food, the psychiatrist-chef (literally, she is a Harvard-trained psychiatrist and an award-winning chef) is back with a more specific work, this time aimed squarely at what it says in the title; how to calm your mind with food.
You may be wondering: does this mean comfort-eating? And, well, not in the sense that term’s usually used. There will be eating and comfort will occur, but the process involves an abundance of nutrients, a minimization of health-deleterious ingredients, and a “for every chemical its task” approach. In other words, very much “nutraceuticals”, as our diet.
On which note: as we’ve come to expect from Dr. Naidoo, we see a lot of hard science presented simply and clearly, with neither undue sensationalization nor unnecessary jargon. We learn about the brain, the gut, relevant biology and chemistry, and build up from understanding ingredients to dietary patterns to having a whole meal plan, complete with recipes.
You may further be wondering: how much does it add that we couldn’t get from the previous book? And the answer is, not necessarily a huge amount, especially if you’re fairly comfortable taking ideas and creating your own path forwards using them. If, on the other hand, you’re a little anxious about doing that (as someone perusing this book may well be), then Dr. Naidoo will cheerfully lead you by the hand through what you need to know and do.
Bottom line: if not being compared to her previous book, this is a great standalone book with a lot of very valuable content. However, the previous book is a tough act to follow! So… All in all we’d recommend this more to people who want to indeed “calm your mind with food”, who haven’t read the other book, as this one will be more specialized for you.
Click here to check out Calm Your Mind With Food, and do just that!
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Make Your Vegetables Work Better Nutritionally
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Most people know that boiling vegetables to death is generally not best for them, but raw isn’t always best either, and if we want to not sabotage our food, then there’s more to bear in mind than “just steam them, then”.
So, what should we keep in mind?
Water solubility
Many nutrients are water-soluble, including vitamin C, vitamin B-complex (as in, the collection of B-vitamins), and flavonoids, as well as many other polyphenols.
This means that if you cook your vegetables (which includes beans, lentils, etc) in water, a lot of the nutrients will go into the water, and be lost if you then drain that.
There are, thus, options;
- Steaming, yes
- Use just enough water to slow-cook or pressure-cook things that are suitable for slow-cooking, or pressure-cooking such as those beans and lentils. That way, when it’s done, there’s no excess water to drain, and all the nutrients are still in situ.
- Use as much water as you like, but then keep the excess water to make a soup, sauce, or broth.
- Use a cooking method other than water, where appropriate. For example, roasting peppers is a much better idea than roasting dried pulses.
- Consume raw, where appropriate.
Fat solubility
Many nutrients are fat-soluble, including vitamins A, D, E, and K, as well as a lot of carotenoids (including heavy-hitters lycopene and β-carotene) and many other polyphenols.
We’re now going to offer almost the opposite advice to that we had about water solubility. This is because unless they are dried, vegetables already contain water, whereas many contain only trace amounts of fat. Consequently, the advice this time is to add fat.
There are options:
- Cook with a modest amount of your favorite healthy cooking oil (our general go-to is extra-virgin olive oil, but avocado oil is great especially for higher temperature cooking, and an argument can be made for coconut oil sometimes)
- Remember that this goes for roasting, too. Brush those vegetables with a touch of olive oil, and not only will they be delicious, they’ll be more nutritious, too.
- Drizzle some the the above, if you’re serving things raw and it’s appropriate. This goes also for things like salads, so dress them!
- Enjoy your vegetables alongside healthy fatty foods such as nuts and seeds (or fatty animal products, if you eat those; fatty fish is a fine option here, in moderation, as are eggs, or fermented dairy products).
For a deeper understanding: Can Saturated Fats Be Healthy?
Do not, however, deep-fry your foods unless it’s really necessary and then only for an occasional indulgence that you simply accept will be unhealthy. Not only is deep-frying terrible for the health in a host of ways (ranging from an excess of oil in the resultant food, to acrylamide, to creating Advanced Glycation End-products*), but also those fat-soluble nutrients? Guess where they’ll go. And unlike with the excess vegetable-cooking water that you can turn into soup or whatever, we obviously can’t recommend doing that with deep-fryer oil.
*see also: Are You Eating AGEs?
Temperature sensitivity
Many nutrients are sensitive to temperature, including vitamin C (breaks down when exposed to high temperatures) and carotenoids (are released when exposed to higher temperatures). Another special case is ergothioneine, “the longevity vitamin” that’s not a vitamin, found in mushrooms, which is also much more bioavailable when cooked.
So, if you’re eating something for vitamin C, then raw is best if that’s a reasonable option.
And if it’s not a reasonable option? Well, then you can either a) just cope with the fact it’s going to have less vitamin C in it, or b) cook it as gently and briefly as reasonably possible.
On the other hand, if you’re eating something for carotenoids (especially including lycopene and β-carotene), or ergothioneine, then cooked is best.
Additionally, if your food is high in oxalates (such as spinach), and you don’t want it to be (for example because you have kidney problems, which oxalates can exacerbate, or would like to get more calcium out of the spinach and into your body, which which oxalic acid would inhibit), then cooked is best, as it breaks down the oxalates.
Same goes for phytates, another “anti-nutrient” found in some whole grains (such as rice and wheat); cooking breaks it down, therefore cooked is best.
This latter is not, however, applicable in the case of brown rice protein powder, for those who enjoy that—because phytates aren’t found in the part of the rice that’s extracted to make that.
And as for brown rice itself? Does contain phytates… Which can be reduced by soaking and heating, preferably both, to the point that the nutritional value is better than it would have been had there not been phytic acid present in the first place; in other words: cooked is best.
You may be wondering: “who is eating rice raw?” and the answer is: people using rice flour.
See: Brown Rice Protein: Strengths & Weaknesses
Want to know more?
Here’s a great rundown from Dr. Rosalind Gibson, Dr. Leah Perlas, and Dr. Christine Hotz:
Improving the bioavailability of nutrients in plant foods at the household level
Enjoy!
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The Science Of Sounds
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We Think You Might Like The Sound Of This…
We’ve written before about the benefits of mindfulness meditation, and how to do it.
We also reviewed a great book on a related topic:
This is Your Brain On Music – by Dr. Daniel Levitin
(yes, that’s the same neuroscientist that we featured as an expert talking about The Five Keys of Aging Healthily)
But what happens when we combine the two?
Mantra meditation & music
Most scientific studies that have been undertaken with regard to meditation tend to focus on mindfulness meditation. It’s easy, effective, and (which makes a difference when it comes to publication bias) is a very safe bet when it comes to funding.
However, today we’re going to look at mantra meditation, which has a lot in common, neurologically speaking, with music. Indeed, when the two were compared separately in a randomized control trial:
❝Daily mantra meditation or classical music listening may be beneficial for cognitive outcomes and quality of life of breast cancer survivors with cancer-related cognitive impairment.
The cognitive benefits appear to be sustained beyond the initial intervention period.❞
One possible reason for some of the similar benefits is the vagus nerve—whether intoning a mantra, or humming along to music, the vibrations can stimulate the vagus nerve, which in turn activates the parasympathetic nervous system, resulting in body-wide relaxation:
The Vagus Nerve (And How You Can Make Use Of It)
How effective is mantra meditation?
According to a large recent narrative review, it depends on your goal:
❝Based on the studies in the four important areas presented, there is no doubt of a strong connection between mantra meditation and human health.
Strong evidence has been found that practicing mantra meditation is effective in relieving stress and in coping with hypertension.
For the other two areas: anxiety and immunity, the evidence is inconclusive or not strong enough to firmly support the claim that the mantra meditation can be used to reduce anxiety or to improve immunity. ❞
Read in full: Scientific Evidence of Health Benefits by Practicing Mantra Meditation: Narrative Review
this is a very interesting read if you do have the time!
How do I practice mantra meditation?
The definition is broad, but the critical criteria are:
- You meditate…
- …using a mantra
Lest that seem flippant: those really are the two key points!
Meditation comes in various forms, and mantra meditation is a form of focussed meditation. While some focussed meditation forms may use a candle or some other focal point, in mantra meditation, the mantra itself provides the focus.
You may be wondering: what should the mantra be?
Classic and well-tested mantras include such simple things as the monosyllabic Sanskrit “Om” or “Ham”. We’re a health science newsletter, so we’ll leave esoteric meanings to other publications as they are beyond our scope, but we will say that these result, most naturally, in the humming sound that we mentioned earlier stimulates the vagus nerve.
But that’s not the only way. Practitioners of religions that have repetitive prayer systems (e.g. anything that uses prayer beads, for example) also provide the basis of focused meditation, using a mantra (in this case, usually a very short oft-repeated prayer phrase).
How long is needed for benefits?
Most studies into mantra meditation have used timed sessions of 15–30 minutes, with 20 minutes being a commonly-used session length, once per day. However…
- Vagus nerve benefits should appear a lot more quickly than that (under 5 minutes) in the case of mantras that cause that vibration we mentioned.
- Repetitive spoken prayers (or similar repeated short phrases, for the irreligious) will generally effect relaxation in whatever period of time it takes for your brain to be fully focused on what you are doing now, instead of what you were thinking about before. If using counting beads, then you probably already know what number works for you.
(again, as a health science publication, we cannot comment on any otherworldly benefits, but the worldly benefits seem reason enough to consider these practices for their potential therapeutic effects)
10almonds tip: for any meditative practice that you want to take approximately a given period of time, we recommend investing in a nice sand timer like this one, as this will not result in a jarring alarm going off!
Like to jazz things up a little?
Enjoy: Meditation That You’ll Actually Enjoy ← Meditation games!
Prefer to keep things to the basics?
Enjoy: No Frills, Evidence-Based Mindfulness ← The simplest scientific approach
Take care!
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How To Avoid Age-Related Macular Degeneration
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Avoiding Age-Related Macular Degeneration
Eye problems can strike at any age, but as we get older, it becomes a lot more likely. In particular, age-related macular degeneration is, as the name suggests, an age-bound disease.
Is there no escaping it, then?
The risk factors for age-related macular degeneration are as follows:
- Being over the age of 55 (can’t do much about this one)
- Being over the age of 65 (risk climbs sharply now)
- Having a genetic predisposition (can’t do much about this one)
- Having high cholesterol (this one we can tackle)
- Having cardiovascular disease (this one we can tackle)
- Smoking (so, just don’t)
Genes predispose; they don’t predetermine. Or to put it another way: genes load the gun, but lifestyle pulls the trigger.
Preventative interventions against age-related macular degeneration
Prevention is better than a cure in general, and this especially goes for things like age-related macular degeneration, because the most common form of it has no known cure.
So first, look after your heart (because your heart feeds your eyes).
See also: The Mediterranean Diet
Next, eat to feed your eyes specifically. There’s a lot of research to show that lutein helps avoid age-related diseases in the eyes and the rest of the brain, too:
See also: Brain Food? The Eyes Have It
Do supplements help?
They can! There was a multiple-part landmark study by the National Eye Institute, a formula was developed that reduced the 5-year risk of intermediate disease progressing to late disease by 25–30%. It also reduced the risk of vision loss by 19%.
You can read about both parts of the study here:
Age-Related Eye Disease Studies (AREDS/AREDS2): major findings
As you can see, an improvement was made between the initial study and the second one, by replacing beta-carotene with lutein and zeaxanthin.
The AREDS2 formula contains:
- 500 mg vitamin C
- 180 mg vitamin E
- 80 mg zinc
- 10 mg lutein
- 2 mg copper
You can learn more about these supplements, and where to get them, here on the NEI’s corner of the official NIH website:
AREDS 2 Supplements for Age-Related Macular Degeneration
Take care of yourself!
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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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