Is Cutting Calories The Key To Healthy Long Life?
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Caloric Restriction with Optimal Nutrition
Yesterday, we asked you “What is your opinion of caloric restriction as a health practice?” and got the above-depicted, below-described spread of responses:
- 48% said “It is a robust, scientifically proven way to live longer and healthier”
- 23% said “It may help us to live longer, but at the cost of enjoying it fully”
- 17% said “It’s a dangerous fad that makes people weak, tired, sick, and unhealthy”
- 12% said “Counting calories is irrelevant to good health; the body compensates”
So… What does the science say?
A note on terms, first
“Caloric restriction” (henceforth: CR), as a term, sees scientific use to mean anything from a 25% reduction to a 50% reduction, compared to metabolic base rate.
This can also be expressed the other way around, “dropping to 60% of the metabolic base rate” (i.e., a 40% reduction).
Here we don’t have the space to go into much depth, so our policy will be: if research papers consider it CR, then so will we.
A quick spoiler, first
The above statements about CR are all to at least some degree True in one way or another.
However, there are very important distinctions, so let’s press on…
CR is a robust, scientifically proven way to live longer and healthier: True or False?
True! This has been well-studied and well-documented. There’s more science for this than we could possibly list here, but here’s a good starting point:
❝Calorie restriction (CR), a nutritional intervention of reduced energy intake but with adequate nutrition, has been shown to extend healthspan and lifespan in rodent and primate models.
Accumulating data from observational and randomized clinical trials indicate that CR in humans results in some of the same metabolic and molecular adaptations that have been shown to improve health and retard the accumulation of molecular damage in animal models of longevity.
In particular, moderate CR in humans ameliorates multiple metabolic and hormonal factors that are implicated in the pathogenesis of type 2 diabetes, cardiovascular diseases, and cancer, the leading causes of morbidity, disability and mortality❞
Source: Ageing Research Reviews | Calorie restriction in humans: an update
See also: Caloric restriction in humans reveals immunometabolic regulators of health span
We could devote a whole article (or a whole book, really) to this, but the super-short version is that it lowers the metabolic “tax” on the body and allows the body to function better for longer.
CR may help us to live longer, but at the cost of enjoying it fully: True or False?
True or False, contingently, depending on what’s important to you. And that depends on psychology as much as physiology, but it’s worth noting that there is often a selection bias in the research papers; people ill-suited to CR drop out of the studies and are not counted in the final data.
Also, relevant for a lot of our readers, most (human-based) studies recruit people over 18 and under 60. So while it is reasonable to assume the same benefits will be carried over that age, there is not nearly as much data for it.
Studies into CR and Health-Related Quality of Life (HRQoL) have been promising, and/but have caveats:
❝In non-obese adults, CR had some positive effects and no negative effects on HRQoL.❞
❝We do not know what degree of CR is needed to achieve improvements in HRQoL, but we do know it requires an extraordinary amount of support.
Therefore, the incentive to offer this intervention to a low-risk, normal or overweight individual is lacking and likely not sustainable in practice.❞
CR a dangerous fad that makes people weak, tired, sick, and unhealthy: True or False?
True if it is undertaken improperly, and/or without sufficient support. Many people will try CR and forget that the idea is to reduce metabolic load while still getting good nutrition, and focus solely on the calorie-counting.
So for example, if a person “saves” their calories for the day to have a night out in a bar where they drink their calories as alcohol, then this is going to be abysmal for their health.
That’s an extreme example, but lesser versions are seen a lot. If you save your calories for a pizza instead of a night of alcoholic drinks, then it’s not quite so woeful, but for example the nutrition-to-calorie ratio of pizza is typically not great. Multiply that by doing it as often as not, and yes, someone’s health is going to be in ruins quite soon.
Counting calories is irrelevant to good health; the body compensates: True or False?
True if by “good health” you mean weight loss—which is rarely, if ever, what we mean by “good health” here at 10almonds (unless we clarify such), but it’s a very common association and indeed, for some people it’s a health goal. You cannot sustainably and healthily lose weight by CR alone, especially if you’re not getting optimal nutrition.
Your body will notice that you are starving, and try to save you by storing as much fat as it can, amongst other measures that will similarly backfire (cortisol running high, energy running low, etc).
For short term weight loss though, yes, it’ll work. At a cost. That we don’t recommend.
❝By itself, decreasing calorie intake will have a limited short-term influence.❞
Source: Reducing Calorie Intake May Not Help You Lose Body Weight
See also…
❝Caloric restriction is a commonly recommended weight-loss method, yet it may result in short-term weight loss and subsequent weight regain, known as “weight cycling”, which has recently been shown to be associated with both poor sleep and worse cardiovascular health❞
Source: Dieting Behavior Characterized by Caloric Restriction
In summary…
Caloric restriction is a well-studied area of health science. We know:
- Practised well, it can extend not only lifespan, but also healthspan
- Practised well, it can improve mood, energy, sexual function, and the other things people fear losing
- Practised badly, it can be ruinous to the health—it is critical to practise caloric restriction with optimal nutrition.
- Practised badly, it can lead to unhealthy weight loss and weight regain
One final note…
If you’ve tried CR and hated it, and you practised it well (e.g., with optimal nutrition), then we recommend just not doing it.
You could also try intermittent fasting instead, for similar potential benefits. If that doesn’t work out either, then don’t do that either!
Sometimes, we’re just weird. It can often be because of a genetic or epigenetic quirk. There are usually workarounds, and/but not everything that’s right for most people will be right for all of us.
Take care!
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STI rates are increasing among midlife and older adults. We need to talk about it
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Globally, the rates of common sexually transmissible infections (STIs) are increasing among people aged over 50. In some cases, rates are rising faster than among younger people.
Recent data from the United States Centers for Disease Control and Prevention shows that, among people aged 55 and older, rates of gonorrhoea and chlamydia, two of the most common STIs, more than doubled between 2012 and 2022.
Australian STI surveillance data has reflected similar trends. Between 2013 and 2022, there was a steady increase in diagnoses of chlamydia, gonorrhoea and syphilis among people aged 40 and older. For example, there were 5,883 notifications of chlamydia in Australians 40 plus in 2013, compared with 10,263 in 2022.
A 2020 study of Australian women also showed that, between 2000 and 2018, there was a sharper increase in STI diagnoses among women aged 55–74 than among younger women.
While the overall rate of common STIs is highest among young adults, the significant increase in STI diagnoses among midlife and older adults suggests we need to pay more attention to sexual health across the life course.
Fit Ztudio/Shutterstock Why are STI rates rising among older adults?
STI rates are increasing globally for all age groups, and an increase among midlife and older people is in line with this trend.
However, increases of STIs among older people are likely due to a combination of changing sex and relationship practices and hidden sexual health needs among this group.
The “boomer” generation came of age in the 60s and 70s. They are the generation of free love and their attitude to sex, even as they age, is quite different to that of generations before them.
Given the median age of divorce in Australia is now over 43, and the internet has ushered in new opportunities for post-separation dating, it’s not surprising that midlife and older adults are exploring new sexual practices or finding multiple sexual partners.
People may start new relationships later in life. Tint Media/Shutterstock It’s also possible midlife and older people have not had exposure to sexual health education in school or do not relate to current safe sex messages, which tend to be directed toward young people. Condoms may therefore seem unnecessary for people who aren’t trying to avoid pregnancy. Older people may also lack confidence negotiating safe sex or accessing STI screening.
Hidden sexual health needs
In contemporary life, the sex lives of older adults are largely invisible. Ageing and older bodies are often associated with loss of power and desirability, reflected in the stereotype of older people as asexual and in derogatory jokes about older people having sex.
With some exceptions, we see few positive representations of older sexual bodies in film or television.
Older people’s sexuality is also largely invisible in public policy. In a review of Australian policy relating to sexual and reproductive health, researchers found midlife and older adults were rarely mentioned.
Sexual health policy generally targets groups with the highest STI rates, which excludes most older people. As midlife and older adults are beyond childbearing years, they also do not feature in reproductive health policy. This means there is a general absence of any policy related to sex or sexual health among midlife or older adults.
Added to this, sexual health policy tends to be focused on risk rather than sexual wellbeing. Sexual wellbeing, including freedom and capacity to pursue pleasurable sexual experiences, is strongly associated with overall health and quality of life for adults of all ages. Including sexual wellbeing as a policy priority would enable a focus on safe and respectful sex and relationships across the adult life course.
Without this priority, we have limited knowledge about what supports sexual wellbeing as people age and limited funding for initiatives to engage with midlife or older adults on these issues.
Midlife and older adults may have limited knowledge about STIs. Southworks/Shutterstock How can we support sexual health and wellbeing for older adults?
Most STIs are easily treatable. Serious complications can occur, however, when STIs are undiagnosed and untreated over a long period. Untreated STIs can also be passed on to others.
Late diagnosis is not uncommon as some STIs can have no symptoms and many people don’t routinely screen for STIs. Older, heterosexual adults are, in general, less likely than other groups to seek regular STI screening.
For midlife or older adults, STIs may also be diagnosed late because some doctors do not initiate testing due to concerns they will cause offence or because they assume STI risk among older people is negligible.
Many doctors are reluctant to discuss sexual health with their older patients unless the patient explicitly raises the topic. However, older people can be embarrassed or feel awkward raising matters of sex.
Resources for health-care providers and patients to facilitate conversations about sexual health and STI screening with older patients would be a good first step.
To address rising rates of STIs among midlife and older adults, we also need to ensure sexual health promotion is targeted toward these age groups and improve accessibility of clinical services.
More broadly, it’s important to consider ways to ensure sexual wellbeing is prioritised in policy and practice related to midlife and older adulthood.
A comprehensive approach to older people’s sexual health, that explicitly places value on the significance of sex and intimacy in people’s lives, will enhance our ability to more effectively respond to sexual health and STI prevention across the life course.
Jennifer Power, Associate Professor and Principal Research Fellow, Australian Research Centre in Sex, Health and Society, La Trobe University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Resveratrol & Healthy Aging
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Resveratrol & Healthy Aging
Resveratrol is the compound found in red grapes, and thus in red wine, that have resulted in red wine being sometimes touted as a heart-healthy drink.
However, at the levels contained in red wine, you’d need to drink 100–1000 glasses of wine per day (depending on the wine) to get the dose of resveratrol that was associated with heart health benefits in mouse studies.
Which also means: if you are not a mouse, you might need to drink even more than that!
Further reading: can we drink to good health?
Resveratrol supplementation
Happily, resveratrol supplements exist. But what does resveratrol do?
It lowers blood pressure:
Effect of resveratrol on blood pressure: a meta-analysis of randomized controlled trials
It improves blood lipid levels:
It improves insulin sensitivity:
It has neuroprotective effects too:
Resveratrol promotes clearance of Alzheimer’s disease amyloid-beta peptides
Is it safe?
For most people, it is generally recognized as safe. However, if you are on blood-thinners or otherwise have a bleeding disorder, you might want to skip it:
Antiplatelet activity of synthetic and natural resveratrol in red wine
You also might want to check with your pharmacist/doctor, if you’re on blood pressure meds, anxiety meds, or immunosuppressants, as it can increase the amount of these drugs that will then stay in your system:
Resveratrol modulates drug- and carcinogen-metabolizing enzymes in a healthy volunteer study
And as ever, of course, if unsure just check with your pharmacist/doctor, to be on the safe side.
Where to get it?
We don’t sell it, but here’s an example product on Amazon for your convenience
Enjoy!
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Safe Effective Sleep Aids For Seniors
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Safe Efective Sleep Aids For Seniors
Choosing a safe, effective sleep aid can be difficult, especially as we get older. Take for example this research review, which practically says, when it comes to drugs, “Nope nope nope nope nope, definitely not, we don’t know, wow no, useful in one (1) circumstance only, definitely not, fine if you must”:
Review of Safety and Efficacy of Sleep Medicines in Older Adults
Let’s break it down…
What’s not so great
Tranquilizers aren’t very healthy ways to get to sleep, and are generally only well-used as a last resort. The most common of these are benzodiazepines, which is the general family of drugs with names usually ending in –azepam and –azolam.
Their downsides are many, but perhaps their biggest is their tendency to induce tolerance, dependence, and addiction.
Non-benzo hypnotics aren’t fabulous either. Z-drugs such as zolpidem tartrate (popularly known by the brand name Ambien, amongst others), comes with warnings that it shouldn’t be prescribed if you have sleep apnea (i.e., one of the most common causes of insomnia), and should be used only with caution in patients who have depression or are elderly, as it may cause protracted daytime sedation and/or ataxia.
See also: Benzodiazepine and z-drug withdrawal
(and here’s a user-friendly US-based resource for benzodiazepine addiction specifically)
Antihistamines are commonly sold as over-the-counter sleep aids, because they can cause drowsiness, but a) they often don’t b) they may reduce your immune response that you may actually need for something. They’re still a lot safer than tranquilizers, though.
What about cannabis products?
We wrote about some of the myths and realities of cannabis use yesterday, but it does have some medical uses beyond pain relief, and use as a sleep aid is one of them—but there’s another caveat.
How it works: CBD, and especially THC, reduces REM sleep, causing you to spend longer in deep sleep. Deep sleep is more restorative and restful. And, if part of your sleep problem was nightmares, they can only occur during REM sleep, so you’ll be skipping those, too. However, REM sleep is also necessary for good brain health, and missing too much of it will result in cognitive impairment.
Opting for a CBD product that doesn’t contain THC may improve sleep with less (in fact, no known) risk of long-term impairment.
See: Cannabis, Cannabinoids, and Sleep: a Review of the Literature
Melatonin: a powerful helper with a good safety profile
We did a main feature on this recently, so we won’t take up too much space here, but suffice it to say: melatonin is our body’s own natural sleep hormone, and our body is good at scrubbing it when we see white/blue light (so, look at such if you feel groggy upon awakening, and it should clear up quickly), so that and its very short elimination half-life again make it quite safe.
Unlike tranquilizers, we don’t develop a tolerance to it, let alone dependence or addiction, and unlike cannabis, it doesn’t produce long-term adverse effects (after all, our brains are supposed to have melatonin in them every night). You can read our previous main feature (including a link to get melatonin, if you want) here:
Melatonin: A Safe Natural Sleep Supplement
Herbal options: which really work?
Valerian? Probably not, but it seems safe to try. Data on this is very inconsistent, and many studies supporting it had poor methodology. Shinjyo et al. also hypothesized that the inconsistency may be due to the highly variable quality of the supplements, and lack of regulation, as they are provided “based on traditional use only”.
Chamomile? Given the fame of chamomile tea as a soothing, relaxing bedtime drink, there’s surprisingly little research out there for this specifically (as opposed to other medicinal features of chamomile, of which there are plenty).
But here’s one study that found it helped significantly:
The effects of chamomile extract on sleep quality among elderly people: A clinical trial
Unlike valerian, which is often sold as tablets, chamomile is most often sold as a herbal preparation for making chamomile tea, so the quality is probably quite consistent. You can also easily grow your own in most places!
Technological interventions
We may not have sci-fi style regeneration alcoves just yet, but white noise machines, or better yet, pink noise machines, help:
White Noise Is Good; Pink Noise Is Better
Note: the noise machine can be a literal physical device purchased to do that (most often sold as for babies, but babies aren’t the only ones who need to sleep!), but it can also just be your phone playing an appropriate audio file (there are apps available) or YouTube video.
We reviewed some sleep apps; you might like those too:
The Head-To-Head Of Google and Apple’s Top Apps For Getting Your Head Down
Enjoy, and rest well!
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Securely Attached –
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A lot of books on attachment theory are quite difficult to read. They’re often either too clinical with too much jargon that can feel like incomprehensible psychobabble, or else too wishy-washy and it starts to sound like a horoscope for psychology enthusiasts.
This one does it better.
The author gives us a clear overview and outline of attachment theory, with minimal jargon and/but clearly defined terms, and—which is a boon for anyone struggling to remember which general attachment pattern is which—color-codes everything consistently along the way. This is one reason that we recommend getting a print copy of the book, not the e-book.
The other reason to invest in the print copy rather than the e-book is the option to use parts of it as a workbook directly—though if preferred, one can simply take the prompts and use them, without writing in the book, of course.
It’s hard to say what the greatest value of this book is because there are two very strong candidates:
- Super-clear and easy explanation of Attachment Theory, in a way that actually makes sense and will stick
- Excellent actually helpful advice on improving how we use the knowledge that we now have of our own attachment patterns and those of others
Bottom line: if you’d like to better understand Attachment Theory and apply it to your life, but have been put off by other presentations of it, this is the most user-friendly, no-BS version that this reviewer has seen.
Click here to check out Securely Attached, and upgrade your relationship(s)!
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Learn to Age Gracefully
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Heal Your Nervous System – by Dr. Linnea Passaler
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This book focuses on the oft-overlooked connection between nervous system dysregulation (i.e. sympathetic nervous system dominance, keeping the brain in “may have to fight for my life at any moment” mode) and the many symptoms—mental and physical—that can arise as a result.
While there is a lot of theory explained in here, there’s practicality too, providing the reader with tools to assess our own levels of nervous system dysregulation and what factors affect that.
In particular in that category, a lot of value is delivered in terms of practical guidance on avoiding common pitfalls in the healing journey. Dr. Passaler discusses the four biggest mistakes people make when attempting to heal, and gives clear strategies to sidestep each of them, with exercises to do and habits to implement.
Another thing that sets this book apart from many of its genre is her emphasis on the importance of sequencing healing practices in the right order. By offering a structured approach, the book helps us implement healing practices without getting overwhelmed or hitting the proverbial brick wall and getting frustrated, which makes a big difference.
The style is easy-to-understand pop-science, albeit with a reassuring 20 pages of references at the back.
Bottom line: if you feel like “peace of mind” is something that’s always just out of reach, this book can help you to get where you need to be, physically as well as mentally.
Click here to check out Heal Your Nervous System, and get things into much better order!
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3 Appetite Suppressants Better Than Ozempic
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Dr. Annette Bosworth gives her recommendations, and explains why:
What and how
We’ll get straight to it; the recommendations are:
- Coffee, black, unsweetened: not only suppresses the appetite but also boosts the metabolism, increasing fat burn.
- Salt: especially for when fasting (as under such circumstances we may lose salts without replenishing them), a small taste of this can help satisfy taste buds while replenishing sodium and—depending on the salt—other minerals. For example, if you buy “low-sodium salt” in the supermarket, this is generally sodium chloride cut with potassium chloride and/or occasionally magnesium sulfate.
- Ketones (MCT oil): ketones can suppress hunger, particularly when fasting causes blood sugar levels to drop. Supplementing with MCT oil promotes ketone production in the liver, training the body to produce more ketones naturally, thus curbing appetite.
For more on these including the science of them, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
- Ozempic vs Five Natural Supplements
- Some Surprising Truths About Hunger And Satiety
- The Fruit That Can Specifically Reduce Belly Fat
Take care!
Don’t Forget…
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