Younger Next Year: The Exercise Program – by Chris Crowley & Dr. Henry Lodge
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We previously reviewed the same authors’ original “Younger Next Year”, and now here’s the more specific book about exercise for increasing healthspan and reversing markers of biological aging, going into much more detail in that regard.
How much more? Well, it’s a very hand-holding book in the sense that it walks the reader through everything step-by-step, tells not only what kind of exercise and how much, but also how to do, what things to do to prepare, how to avoid not erring in various ways, what metrics to keep an eye on to ensure you are making progress, and more.
There are also whole sections on specific common age-related issues including osteoporosis and arthritis, as well as how to train around injuries (especially of the kind that basically aren’t likely to ever fully go away).
As with the previous book, there’s a blend of motivational pep talk and science—this book is heavily weighted towards the former. It has, however, enough science to keep it on the right track throughout. Hence the two authors! Crowley for motivational pep and training tips, and Dr. Lodge for the science.
Bottom line: if you’d like to be biologically younger next year, that exercise will be an important component of that, and this book is really quite comprehensive for its relative brevity (weighing in at 176 pages).
Click here to check out Younger Next Year: The Exercise Program, and make that progress!
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How Your Brain Chooses What To Remember
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During the day, your brain is simply too busy to encode memories without interfering with normal processing. At night, however…
The filing system
The brain decides which memories to keep based on significance, using sharp brain wave ripples as an internal bookmarking system. Everyday memories fade, while important events are tagged in this manner for consolidation during sleep.
How does it do this? It starts in the hippocampus, which records experiences during wakefulness and replays them repeatedly at high speed during sleep, preparing them for transfer to the neocortex.
How do we know? Uniform Manifold Approximation & Projection (UMAP) for dimension reduction is a tool that condenses 400-dimensional neural activity data into 3D for visualization. Mice navigating a maze showed hippocampal activity encoding location and learning progression; it also showed neural patterns reflecting maze layout and task mastery.
What this means in practical terms: you need to get good sleep if you don’t want to lose your memories!
For more on all of this, enjoy:
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Want to learn more?
You might also like to read:
How To Boost Your Memory Immediately (Without Supplements)
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25 Healthy Habits That Will Change Your Life
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Cori Lefkowith, of “Redefining Strength” and “Strong At Every Age” fame, has compiled a list of the simple habits that make a big difference, and here they are!
The Tips
Her recommendations include…
- The healthy activities you’re most prone to skipping? Do those first
- Create staple meals… Consciously! This means: instead of getting into a rut of cooking the same few things in rotation because it’s what you have the ingredients in for, consciously and deliberately make a list of at least 7 meals that, between them, constitute a healthy balanced diet, and choose to make them your staples. That doesn’t mean don’t eat anything else (indeed, variety is good!) but having a robust collection of healthy staples to fall back on will help you avoid falling into unhealthy eating traps.
- Schedule time for healthy activities that you love. Instead of thinking “it would be nice to…”, actually figure out a timeslot, plan in advance, making it recurring, and do it!
- Have (healthy!) no-spoil food options always available. No-spoil doesn’t have to mean “won’t spoil ever”, but does mean at least that it has a long shelf-life. Nuts are a good example, assuming you’re not allergic. Sundried fruits are good too; not nearly as good as fresh fruit, but a lot better than some random processed snack because it’s what in. If you eat fish, then see if you can get dried fish in; it’s high in protein and keeps for a very long time indeed.
- Stock up on spices! Not only do they all have great health-giving properties (at least, we can’t think of a refutation by counterexample, Arrakis be damned), but also, they literally spice up our culinary repertoire, and bring joy to cooking and eating healthy food.
If you like these, check out the rest:
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Further reading
For more about actually making habits stick quickly and reliably,enjoy:
How To Really Pick Up (And Keep!) Those Habits
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Younger You – by Kara Fitzgerald
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First, a note about the author: she is a naturopathic doctor, a qualification not recognized in most places. Nevertheless, she clearly knows a lot of stuff, and indeed has been the lead research scientist on a couple of studies, one of which was testing the protocol that would later go into this book.
Arguably, there’s a conflict of interest there, but it’s been peer reviewed and the science seems perfectly respectable. After an 8-week interventional trial, subjects enjoyed a reversal of DNA methylation (one of various possible markers of biological aging) comparable to being 3 years younger.
Where the value of this book lies is in optimizing one’s diet in positive fashion. In other words, what to include rather than what to exclude, but the “include” list is quite extensive so you’re probably not going to be reaching for a donut by the time you’ve eaten all that. In particular, she’s optimized the shopping list for ingredients that contain her DNA methylation superstars most abundantly; those nutrients being: betaine choline, curcumin, epigallocatechin gallate, quercetin, rosmarinic acid, and vitamins B9 and B12.
To make this possible, she sets out not just shopping list but also meal plans, and challenges the reader to do an 8-week intervention of our own.
Downside: it is quite exacting if you want to follow it 100%.
Bottom line: this is a very informative, science-based book. It can make you biologically younger at least by DNA methylation standards, if the rather specific diet isn’t too onerous for you.
Click here to check out Younger You, and enjoy a younger you!
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Mythbusting The Mask Debate
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Mythbusting The Mask Debate
We asked you for your mask policy this respiratory virus season, and got the above-depicted, below-described, set of responses:
- A little under half of you said you will be masking when practical in indoor public places
- A little over a fifth of you said you will mask only if you have respiratory virus symptoms
- A little under a fifth of you said that you will not mask, because you don’t think it helps
- A much smaller minority of you (7%) said you will go with whatever people around you are doing
- An equally small minority of you said that you will not mask, because you’re not concerned about infections
So, what does the science say?
Wearing a mask reduces the transmission of respiratory viruses: True or False?
True…with limitations. The limitations include:
- The type of mask
- A homemade polyester single-sheet is not the same as an N95 respirator, for instance
- How well it is fitted
- It needs to be a physical barrier, so a loose-fitting “going through the motions” fit won’t help
- The condition of the mask
- And if applicable, the replaceable filter in the mask
- What exactly it has to stop
- What kind of virus, what kind of viral load, what kind of environment, is someone coughing/sneezing, etc
More details on these things can be found in the link at the end of today’s main feature, as it’s more than we could fit here!
Note: We’re talking about respiratory viruses in general in this main feature, but most extant up-to-date research is on COVID, so that’s going to appear quite a lot. Remember though, even COVID is not one beast, but many different variants, each with their own properties.
Nevertheless, the scientific consensus is “it does help, but is not a magical amulet”:
- 2021: Effectiveness of Face Masks in Reducing the Spread of COVID-19: A Model-Based Analysis
- 2022: Why Masks are Important during COVID‐19 Pandemic
- 2023: The mitigating effect of masks on the spread of COVID-19
Wearing a mask is actually unhygienic: True or False?
False, assuming your mask is clean when you put it on.
This (the fear of breathing more of one’s own germs in a cyclic fashion) was a point raised by some of those who expressed mask-unfavorable views in response to our poll.
There have been studies testing this, and they mostly say the same thing, “if it’s clean when you put it on, great, if not, then well yes, that can be a problem”:
❝A longer mask usage significantly increased the fungal colony numbers but not the bacterial colony numbers.
Although most identified microbes were non-pathogenic in humans; Staphylococcus epidermidis, Staphylococcus aureus, and Cladosporium, we found several pathogenic microbes; Bacillus cereus, Staphylococcus saprophyticus, Aspergillus, and Microsporum.
We also found no associations of mask-attached microbes with the transportation methods or gargling.
We propose that immunocompromised people should avoid repeated use of masks to prevent microbial infection.❞
Source: Bacterial and fungal isolation from face masks under the COVID-19 pandemic
Wearing a mask can mean we don’t get enough oxygen: True or False?
False, for any masks made-for-purpose (i.e., are by default “breathable”), under normal conditions:
- COVID‐19 pandemic: do surgical masks impact respiratory nasal functions?
- Performance Comparison of Single and Double Masks: Filtration Efficiencies, Breathing Resistance and CO2 Content
However, wearing a mask while engaging in strenuous best-effort cardiovascular exercise, will reduce VO₂max. To be clear, you will still have more than enough oxygen to function; it’s not considered a health hazard. However, it will reduce peak athletic performance:
…so if you are worrying about whether the mask will impede you breathing, ask yourself: am I engaging in an activity that requires my peak athletic performance?
Also: don’t let it get soaked with water, because…
Writer’s anecdote as an additional caveat: in the earliest days of the COVID pandemic, I had a simple cloth mask on, the one-piece polyester kind that we later learned quite useless. The fit wasn’t perfect either, but one day I was caught in heavy rain (I had left it on while going from one store to another while shopping), and suddenly, it fitted perfectly, as being soaked through caused it to cling beautifully to my face.
However, I was now effectively being waterboarded. I will say, it was not pleasant, but also I did not die. I did buy a new mask in the next store, though.
tl;dr = an exception to “no it won’t impede your breathing” is that a mask may indeed impede your breathing if it is made of cloth and literally soaked with water; that is how waterboarding works!
Want up-to-date information?
Most of the studies we cited today were from 2022 or 2023, but you can get up-to-date information and guidance from the World Health Organization, who really do not have any agenda besides actual world health, here:
Coronavirus disease (COVID-19): Masks | Frequently Asked Questions
At the time of writing this newsletter, the above information was last updated yesterday.
Take care!
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The End of Heart Disease – by Dr. Joel Fuhrman
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We’ve previously reviewed another of Dr. Fuhrman’s books, “Eat To Live”, and this time, he’s focusing specifically on preventing/reversing heart disease.
Dr. Fuhrman takes the stance that our food can either kill or heal us, and we get to choose which. As such, nutrition is central to his heart-healthy plan; he mostly leaves matters of exercise, sleep, etc to other sources.
His dietary approach is mostly uncontroversial: for example, advices include: enjoy nutritionally dense foods, skip processed foods, eat at least mostly plants, skip the added salt. A slightly more controversial aspect is that he advocates for avoiding cooking oils, including the healthiest oils, including olive and avocado, which are by current scientific consensus considered heart-healthy in moderation. As in, not even just heart-neutral, but rather, they actively improve triglycerides.
He compares different cardioprotective diets, and while he’s not unbiased, he does provide 40 pages of scholarly references, so we may understand that at the very least, his approach is sound.
There are also recipes—94 pages of them—for any who might wonder “how do I cook without…?” and some ingredient he would rather you omit.
The style is information-dense (and this is a 448-page book) but still very readable.
Bottom line: if you’re serious about improving your heart health, this book can help a lot with that.
Click here to check out The End Of Heart Disease, and end heart disease for yourself!
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Tahini vs Hummus – Which is Healthier?
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Our Verdict
When comparing tahini to hummus, we picked the tahini.
Why?
Both are great! But tahini is so nutritionally dense, that it makes even the wonder food that is hummus look bad next to it.
In terms of macros, tahini is higher in everything except water. So, higher in protein, carbs, fats, and fiber. In terms of those fats, the fat breakdown is similar for both, being mostly polyunsaturated and monounsaturated, with a small percentage of saturated. Tahini has the lower glycemic index, but both are so low that it makes no practical difference.
In terms of vitamins, tahini has more of vitamins A, B1, B2, B3, B5, B9, E, and choline, while hummus is higher in vitamin B6.
This is a good reason to embellish hummus with some red pepper (vitamin A), a dash of lemon (vitamin C), etc, but we’re judging these foods in their most simple states, for fairness.
When it comes to minerals, tahini has more calcium, copper, iron, magnesium, manganese, phosphorus, potassium, selenium, and zinc. Meanwhile, hummus is higher in sodium.
Note: hummus is a good source of all those minerals too! Tahini just has more.
In short… Enjoy both, but tahini is the more nutritionally dense by far. On the other hand, if for whatever reason you’re looking for something lower in carbs, fats, and calories, then hummus is where it’s at.
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You might like to read:
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