NADᐩ Against Aging
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Nicotinamide adenine dinucleotide, or “NAD” to its friends, is a coenzyme produced in the human body (amongst other places), and it is critical for cellular energy metabolism, but there’s more to it than that.
Today we’ll be looking mostly at NAD+, of which the + indicates the positive formal charge of one of its nitrogen atoms. We won’t get too much into the chemistry of this, but we will mention that it’s a cofactor with NADH—the former accepting electrons and the latter donating electrons.
Both NAD+ and NADH are critical to good health, but we’re going to focus on NAD+ for the simple reason that it gets depleted with aging.
Note: it gets depleted with aging.
Chronological age is not so important here, but there is a direct relationship between biological aging and NAD+ depletion.
For example, healthy centenarians tend not to have depleted NAD+ levels. Further, its depletion (in those in whom it is depleted) is then a causal factor for many age-related diseases:
❝Remarkably, ageing is accompanied by a gradual decline in tissue and cellular NAD+ levels in multiple model organisms, including rodents and humans.
This decline in NAD+ levels is linked causally to numerous ageing-associated diseases, including cognitive decline, cancer, metabolic disease, sarcopenia and frailty.
Many of these ageing-associated diseases can be slowed down and even reversed by restoring NAD+ levels.❞
~ Dr. Rosalba Perrone et al.
Read in full: NAD+ metabolism and its roles in cellular processes during ageing
As for restoring those NADᐩ levels, that does help in interventional trials, whether by supplementing directly, or with NAD precursors*:
❝NAD+ levels steadily decline with age, resulting in altered metabolism and increased disease susceptibility.
Restoration of NAD+ levels in old or diseased animals can promote health and extend lifespan, prompting a search for safe and efficacious NAD-boosting molecules that hold the promise of increasing the body’s resilience, not just to one disease, but to many, thereby extending healthy human lifespan.❞
~ Dr. David Sinclair et al.
Read more: Therapeutic Potential of NAD-Boosting Molecules: The In Vivo Evidence
*There are actually also other NAD-boosting molecules besides NAD itself and its precursors. For example, the liver will not produce NADᐩ unless it has aminocarboxymuconate-semialdehyde decarboxylase (or “ACMSD”, to its friends), which limits the production of NADᐩ. Why, you ask? The theory is that it is a kind of evolutionary conservativism, much like not lighting a fire without the ability to put it out. In any case, taking ACMSD-blockers will thus result in an increased endogenous production of NADᐩ.
You can read about this here:
De novo NAD+ synthesis enhances mitochondrial function and improves health
Nor is taking supplements or drugs the only way to get more of it; there’s an enzyme nicotinamide phosphoribosyltransferase (“NAMPT”, to its friends) involved in the synthesis of NADᐩ, and exercise boosts levels by 127% (i.e., it more than doubles the levels), based on a modest three-week exercise bike regimen:
Skeletal muscle NAMPT is induced by exercise in humans
And to underline that point, another study found that resistance training (so, a different kind of exercise from that of the previous study) boosts levels of NADᐩ itself by the same 127%:
One way to get more out of NADᐩ
We’ll get straight to the point: it works very well paired with a senolytic agent, i.e. something that kills aging cells so that they get recycled sooner:
NAD+, Senolytics, or Pyruvate for Healthy Aging?
To read more about senolytics, check out:
Fisetin: The Anti-Aging Assassin
Want to try some?
We don’t sell it, but here for your convenience is an example product on Amazon 😎
Enjoy!
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Hearing loss is twice as common in Australia’s lowest income groups, our research shows
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Around one in six Australians has some form of hearing loss, ranging from mild to complete hearing loss. That figure is expected to grow to one in four by 2050, due in a large part to the country’s ageing population.
Hearing loss affects communication and social engagement and limits educational and employment opportunities. Effective treatment for hearing loss is available in the form of communication training (for example, lipreading and auditory training), hearing aids and other devices.
But the uptake of treatment is low. In Australia, publicly subsidised hearing care is available predominantly only to children, young people and retirement-age people on a pension. Adults of working age are mostly not eligible for hearing health care under the government’s Hearing Services Program.
Our recent study published in the journal Ear and Hearing showed, for the first time, that working-age Australians from lower socioeconomic backgrounds are at much greater risk of hearing loss than those from higher socioeconomic backgrounds.
We believe the lack of socially subsidised hearing care for adults of working age results in poor detection and care for hearing loss among people from disadvantaged backgrounds. This in turn exacerbates social inequalities.
Population data shows hearing inequality
We analysed a large data set called the Household, Income and Labour Dynamics in Australia (HILDA) survey that collects information on various aspects of people’s lives, including health and hearing loss.
Using a HILDA sub-sample of 10,719 working-age Australians, we evaluated whether self-reported hearing loss was more common among people from lower socioeconomic backgrounds than for those from higher socioeconomic backgrounds between 2008 and 2018.
Relying on self-reported hearing data instead of information from hearing tests is one limitation of our paper. However, self-reported hearing tends to underestimate actual rates of hearing impairment, so the hearing loss rates we reported are likely an underestimate.
We also wanted to find out whether people from lower socioeconomic backgrounds were more likely to develop hearing loss in the long run.
Hearing care is publicly subsidised for children.
mady70/ShutterstockWe found people in the lowest income groups were more than twice as likely to have hearing loss than those in the highest income groups. Further, hearing loss was 1.5 times as common among people living in the most deprived neighbourhoods than in the most affluent areas.
For people reporting no hearing loss at the beginning of the study, after 11 years of follow up, those from a more deprived socioeconomic background were much more likely to develop hearing loss. For example, a lack of post secondary education was associated with a more than 1.5 times increased risk of developing hearing loss compared to those who achieved a bachelor’s degree or above.
Overall, men were more likely to have hearing loss than women. As seen in the figure below, this gap is largest for people of low socioeconomic status.
Why are disadvantaged groups more likely to experience hearing loss?
There are several possible reasons hearing loss is more common among people from low socioeconomic backgrounds. Noise exposure is one of the biggest risks for hearing loss and people from low socioeconomic backgrounds may be more likely to be exposed to damaging levels of noise in jobs in mining, construction, manufacturing, and agriculture.
Lifestyle factors which may be more prevalent in lower socioeconomic communities such as smoking, unhealthy diet, and a lack of regular exercise are also related to the risk of hearing loss.
Finally, people with lower incomes may face challenges in accessing timely hearing care, alongside competing health needs, which could lead to missed identification of treatable ear disease.
Why does this disparity in hearing loss matter?
We like to think of Australia as an egalitarian society – the land of the fair go. But nearly half of people in Australia with hearing loss are of working age and mostly ineligible for publicly funded hearing services.
Hearing aids with a private hearing care provider cost from around A$1,000 up to more than $4,000 for higher-end devices. Most people need two hearing aids.
Hearing loss might be more common in low income groups because they’re exposed to more noise at work.
Dmitry Kalinovsky/ShutterstockLack of access to affordable hearing care for working-age adults on low incomes comes with an economic as well as a social cost.
Previous economic analysis estimated hearing loss was responsible for financial costs of around $20 billion in 2019–20 in Australia. The largest component of these costs was productivity losses (unemployment, under-employment and Jobseeker social security payment costs) among working-age adults.
Providing affordable hearing care for all Australians
Lack of affordable hearing care for working-age adults from lower socioeconomic backgrounds may significantly exacerbate the impact of hearing loss among deprived communities and worsen social inequalities.
Recently, the federal government has been considering extending publicly subsidised hearing services to lower income working age Australians. We believe reforming the current government Hearing Services Program and expanding eligibility to this group could not only promote a more inclusive, fairer and healthier society but may also yield overall cost savings by reducing lost productivity.
All Australians should have access to affordable hearing care to have sufficient functional hearing to achieve their potential in life. That’s the land of the fair go.
Mohammad Nure Alam, PhD Candidate in Economics, Macquarie University; Kompal Sinha, Associate Professor, Department of Economics, Macquarie University, and Piers Dawes, Professor, School of Health and Rehabilitation Sciences, The University of Queensland
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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The Vagina Bible – by Dr. Jen Gunter
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The vagina is mysterious to most men, and honestly, also to a lot of women. School education on this is minimal, if even extant, and as an adult, everyone’s expected to “just know” stuff. However, here in reality, that isn’t how knowledge works.
To remedy this, gynecologist Dr. Jen Gunter takes 432 pages to give us the low-down and the ins-and-outs of this remarkable organ that affects, and is affected by, a lot of the rest of our health.
(On which note, if you think you already know it, ask yourself: could you write 432 pages about it? If not, you’ll probably still learn some things from this book)
Stylistically, this book is more of a textbook in presentation, but the writing is still very much easy-reading. The focus is mostly on anatomy and physiology, though she does give due attention to relevant healthcare options; what’s good, what’s bad, and what’s just plain unnecessary. In such cases, she always has plenty of science to hand; it’s never just “one woman’s opinion”.
If the book has a downside, it’s that (based on other reviews) it seems to upset some readers with unwelcome truths, but that’s more in the vein of “she’s right, of course, but I didn’t like reading it”.
Bottom line: if you have a vagina, or spend any amount of time in close proximity to one, then this is a great book for you.
Click here to check out The Vagina Bible, and upgrade your knowledge!
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The 5 Resets – by Dr. Aditi Nerurkar
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What this book isn’t: an advice to go on a relaxing meditation retreat, or something like that.
What this is: a science-based guide to what actually works.
There’s no need to be mysterious, so we’ll mention that the titular “5 resets” are:
- What matters most
- Quiet in a noisy world
- Leveraging the brain-body connection
- Coming up for air (regaining perspective)
- Bringing your best self forward
All of these are things we can easily lose sight of in the hustle and bustle of daily life, so having a system for keeping them on track can make a huge difference!
The style is personable and accessible, while providing a lot of strongly science-backed tips and tricks along the way.
Bottom line: if life gets away from you a little too often for comfort, this book can help you keep on top of things with a lot less stress.
Click here to check out “The 5 Resets”, and take control with conscious calm!
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Natto, Taurine + Black Pepper, And Other Game-Changers
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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
❝Loved the info on nuts; of course I always eat pecans, which didn’t make the list of healthy nuts!❞
Dear subscriber, pardon the paraphrase of your comment—somehow it got deleted and now exists only in this writer’s memory. However, to address it:
Pecans are great too! We can’t include everything in every article (indeed, we got another feedback the same day saying the article was too long), but we love when you come to us with stuff for us to look at and write about (seriously, writer here: the more you ask, the easier it makes my job), so let’s talk pecans for a moment:
Pecans would have been number six on our list if we’d have written more!
Like many nuts, they’ve an abundance of healthy fats, fiber, vitamins, and minerals.
They’re particularly good for zinc, which is vital for immune function, healing (including normal recovery after normal exercise), and DNA synthesis (so: anti-aging).
Pecans are also great for reducing LDL (“bad” cholesterol) and triglycerides (which are also bad for heart health); check it out:
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Body Language (In The Real World)
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Forget What You Think You Know About Body Language
…unless it’s about a specific person whose habits and mannerisms you know intimately, in which case, you probably have enough personal data stored up to actually recognize patterns à la “when my spouse does this, then…”, and probably do know what’s going on.
For everyone else… our body language can be as unique as our idiolect
What’s an idiolect? It’s any one given person’s way of speaking/writing, in their natural state (i.e. without having to adjust their style for some reason, for example in a public-facing role at work, where style often becomes much narrower and more consciously-chosen).
Extreme example first
To give an extreme example of how non-verbal communication can be very different than a person thinks, there’s an anecdote floating around the web of someone whose non-verbal autistic kid would, when he liked someone who was visiting the house, hide their shoes when they were about to leave, to cause them to stay longer. Then one day some relative visited and when she suggested that she “should be going sometime soon”, he hurried to bring her her shoes. She left, happy that the kid liked her (he did not).
The above misunderstanding happened because the visitor had the previous life experience of “a person who brings me things is being helpful, and if they do it of their own free will, it’s because they like me”.
In other words…
Generalizations are often sound… In general
…which does not help us when dealing with individuals, which as it turns out, everyone is.
Clenched fists = tense and angry… Except when it’s just what’s comfortable for someone, or they have circulation issues, or this, or that, or the other.
Pacing = agitated… Except when it’s just someone who finds the body in motion more comfortable
Relaxed arms and hands = at ease and unthreatening… Unless it’s a practitioner of various martial arts for whom that is their default ready-for-action state.
Folded arms = closed-off, cold, distant… Or it was just somewhere to put one’s hands.
Lack of eye contact = deceitful, hiding something… Unless it’s actually for any one of a wide number of reasons, which brings us to our next section:
A liar’s “tells”
Again, if you know someone intimately and know what signs are associated with deceit in them, then great, that’s a thing you know. But for people in general…
A lot of what is repeated about “how to know if someone is lying” has seeped into public consciousness from “what police use to justify their belief that someone is lying”.
This is why many of the traditional “this person is lying” signs are based around behaviors that show up when in fact “this person is afraid, under pressure, and talking to an authority figure who has the power to ruin their life”:
Research on Non-verbal Signs of Lies and Deceit: A Blind Alley
But what about eye-accessing cues? They have science to them, right?
For any unfamiliar: this is about the theory that when we are accessing different parts of our mind (such as memory or creativity, thus truthfulness or lying), our eyes move one way or another according to what faculty we’re accessing.
Does it work? No
But, if you carefully calibrate it for a specific person, such as by asking them questions along the lines of “describe your front door” or “describe your ideal holiday”, to see which ways they look for recall or creativity… Then also no:
The Eyes Don’t Have It: Lie Detection and Neuro-Linguistic Programming
How can we know what non-verbal communication means, then?
With strangers? We can’t, simply. It’s on us to be open-minded, with a healthy balance of optimism and wariness.
With people we know? We can build up a picture over time, learn the person’s patterns. Best of all, we can ask them. In the moment, and in general.
For more on optimizing interpersonal communication, check out:
Save Time With Better Communication
…and the flipside of that:
The Problem With Active Listening (And How To Do It Better)
Take care!
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The Vegan Instant Pot Cookbook – by Nisha Vora
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We all know that we should “eat the rainbow” (and that no, Skittles do not count)… So why do we often find ourselves falling into the same familiar habits and well-worn comfort foods?
Nisha Vora, of “Rainbow Plant Life“, is here to make things a lot easier—brightening up our plates is her mission!
In this Instant Pot-authorized, beautifully illustrated cookbook, Vora offers us 90 recipes to do just that. And because it’s an Instant Pot cookbook, they’re all super easy.
What if you don’t have an Instant Pot? Well, don’t tell Instant Pot we said this, but another pressure cooker brand will work too. And if you don’t have any pressure cooker, the recipes are modifiable for regular pots and pans. The recipes also lend themselves well to slow-cooker cooking, for that matter!
Where Vora really excels though is in making mostly-one-pot dishes beautiful and tasty.
The recipes, by the way, are drawn from cuisines from all around the world, and cover:
- summer and winter dishes
- breakfasts, sides, mains, desserts
- the healthy and the decadent (and sometimes both!)
As for the presentation of each recipe, we get at least one full-page photo of the finished dish and sometimes extras of the steps. We get a little intro, the usual information about ingredients etc, and a no-fuss step-by-step method. It’s very easy to use.
If you have allergies or other dietary considerations, this book is pretty mindful of those, making substitutions minimal and easy.
Bottom line: this comprehensive book will seriously brighten up the colors of your cooking!
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