
Why Telomeres Shorten, & What Can Be Done About It
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Telomeres are protective caps at the ends of our DNA, similar to the plastic tips on shoelaces (there’s a repeated “junk DNA” string, TTAGGG in humans, kept safe in a sheathe, which made of shelterin, a protein complex).
They prevent our genetic material from becoming damaged or tangled. However, each time a cell divides, telomeres get a little shorter because the copying process isn’t perfect (DNA polymerase can’t replicate everything inside the sheathe, because it is too well-protected).
So, how do we deal with this?
Lacing up for long life
An enzyme called telomerase (discovered as recently as 2009 by Nobel Prize-winning scientists Dr. Elizabeth Blackburn et al.) can rebuild telomeres. It has two main parts: one part1 that makes new DNA and another part2 that acts as a guide. Most cells don’t produce enough telomerase, so telomeres still tend to shrink over time.
1 TERT (Telomerase Reverse Transcriptase), which synthesizes telomeric DNA
2 TERC (Telomerase RNA Component), which serves as a template
When telomeres become too short, cells stop dividing. Some cells may enter a damaged state (e.g. senescent “zombie” cells) or die. In some cases, cells bypass this limit by reactivating telomerase, which can lead to cancer.
Studies on mice show that when telomerase is missing, they age more quickly and struggle to repair tissues. When telomerase is restored, aging effects are reversed. Human research also links short telomeres to age-related diseases like immune system decline and organ damage.
Researchers have already found some ways to slow aging by:
- Activating telomerase (e.g. with small molecules like TA-65).
- Gene therapy to transiently express telomerase.
- Stabilizing TERC RNA component to prevent degradation.
However, increasing telomerase too much could raise the risk of cancer. So, it’s a bit of a juggling act yet.
For more on all of this, enjoy:
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Want to learn more?
You might also like:
Fisetin: The Anti-Aging Assassin ← kills senescent cells, meaning newer cells are copied rather than older ones, resulting in copied cells with less DNA damage
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Vaginal Probiotics: What Does The Science Say?
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It’s Q&A Day at 10almonds!
Have a question or a request? We love to hear from you!
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 😎
❝Is there any merit to vaginal probiotics?❞
What a fun question! First let’s break it down, as this could mean two different things:
- Probiotics, which you consume, using your mouth, which are marketed as benefiting vaginal health
- Probiotics taken as a vaginal pessary/suppository, to act directly there
The former has limited evidence for it, but generally speaking, improving one’s gut health improves all other areas of health, so it’s not surprising if it helps this too.
See for example:
Some notes:
- candidal vaginitis means a yeast infection causing vaginal inflammation
- bacterial vaginosis means a vaginal bacterial imbalance (generally also featuring vaginal inflammation, though it can be asymptomatic)
In the latter case, the “imbalance” in question is usually a shortage of Lactobacillus sp. (that is to say, the diverse species of the Lactobacillus genus) resulting in an overgrowth of other kinds of bacteria, which in turn results in changing the vaginal microbiome to make it warmer and more acidic than it should be.
While a healthy vagina shouldn’t smell of roses, it shouldn’t smell fishy either; if it does, that’s a sign of bacterial vaginosis.
What it’s supposed to be like: slightly bitter, slightly salty, distinctly umami, along with a cocktail of personal pheromones (and if menstruating or otherwise* vaginally bleeding, then of course add: iron/”metallic”). The pheromones will also reflect any hormonal changes, but should never make anything smell bad, just different.
*e.g. due to PCOS, fibroids, etc. Note that in the case of PCOS, it may also smell a little different (if it does, then usually: a little more musky), due to often different hormone levels. Again: it still shouldn’t smell bad, though, just different.
In the above-linked study, taking more live Lactobacillus acidophilus (in yogurt, eating it, with their mouths) improved levels of L. acidophilus in the vagina. While the study authors concluded “this ingestion of yogurt may have reduced episodes of bacterial vaginosis”, which is rather a weak claim, it can be argued that it merely improving the levels of L. acidophilus in the vagina was already a win.
That was a small (n=42, and only 7 followed through to completion) and old (1996) study, and it bears mentioning that most of the studies into this seem to be small and old, but conclude similarly with weakly positive statements.
However, it does make a difference what kind of Lactobacillus is used, for example in this next study…
- L. fermentum RC-14 worked well (90% success rate)
- L. rhamnosus GR-1 worked somewhat (40% success rate)
- L. rhamnosus GG did not work (0% success rate)
So, diversity is key, and getting a wide range of Lactobacillus sp. seems to be a safe bet.
Short version: enjoying probiotics as part of your diet probably improves vaginal health, just like it improves pretty much everything else.
See also: Make Friends With Your Gut (You Can Thank Us Later)
You would think that this would mean that taking probiotics as a vaginal pessary/suppository would be even better, but the results are weaker, as in this study, which produced temporary improvements in about half the study group, with only 3 out of 28 being free of bacterial vaginosis the next month:
Treatment of bacterial vaginosis with lactobacilli
This study got better results, with a 61% success rate:
Important note
Do note that this last category, involving topical treatments (i.e., manually introducing Lactobacillus sp. to the vagina) were all in cases of pre-existing bacterial vaginosis, not as a prophylactic and/or general health-improving thing.
If your vagina seems happy right now, then do not mess with its happy bacterial balance!
And at all times (regardless of whether it seems happy right now or not): do not douche (it does not need it and will not benefit from it; the vagina is self-cleaning*) as this will wash out many of your Lactobacilli and will do absolutely nothing against any Candida there (C. albicans being a rooted fungus, whereas Lactobacillus is a sausage-shaped bacterium with many tiny appendages but no actual ability to stay put), so Candida will flourish in the Lactobacillus’s absence.
*by the vagina, we are referring to the vaginal canal. The vulva—the outside part consisting of the two pairs of labia, the glans clitoris, and clitoral hood—are not self-cleaning, and should just be washed gently per your normal bath/shower routine; that’s perfectly fine and good.
And definitely don’t put any “cleansing” toiletries inside the vagina (or any toiletries at all, for that matter), even if they are sold and marketed for that purpose; they will not help and they will harm.
Also, due to their neighborliness, messing up the microbiome inside the vagina is a common way to also get Candida inside the urethra:
How To Avoid Urinary Tract Infections (UTIs)
One other option
Finally, unless you have a “very good friend” you have a pressing urge to swap germs with, you might want to leave this one to the scientists, but we share this paper just for interest:
Lastly…
Going back to oral supplementation, if you’d like to try that then check out this for further notes on what, why, how, etc:
How Much Difference Do Probiotic Supplements Make To Health?
Take care!
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Why You Should Diversify Your Nuts!
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Time to go nuts for nuts!
Nuts, in popular perception, range from “basically the healthiest food anyone can eat” to “basically high calorie salty snacks”. And, they can be either!
Some notes, then:
- Raw is generally better that not
- Dry roasted is generally better than the kind with added oils
- Added salt is neither necessary nor good
Quick tip: if “roasted salted” are the cheapest or most convenient to buy, you can at least mitigate that by soaking them in warm water for 5 minutes, before rinsing and (if you don’t want wet nuts) drying.
You may be wondering: who does want wet nuts? And the answer is, if for example you’re making a delicious cashew and chickpea balti, the fact you didn’t dry them before throwing them in won’t make a difference.
Now, let’s do a quick run-down; we don’t usually do “listicles” but it seemed a good format here, so we’ve picked a top 5 for nutritional potency:
Almonds
We may have a bias. We accept it. But almonds are also one of the healthiest nuts around, and generally considered by most popular metrics the healthiest.
Not only are they high in protein, healthy fat, fiber, vitamins, and minerals, but they’re even a natural prebiotic that increases the populations of healthy gut bacteria, while simultaneously keeping down the populations of gut pathogens—what more can we ask of a nut?
Read more: Prebiotic effects of almonds and almond skins on intestinal microbiota in healthy adult humans
Pistachios
Not only are these super tasty and fun to eat (and mindful eating is all but guaranteed, as shelling them by hand slows us down and makes us more likely to eat them one at a time rather than by the handful), but also they contain lots of nutrients and are lower in calories than most nuts, so they’re a great option for anyone who’d like to eat more nuts but is doing a calorie-controlled diet and doesn’t want to have half a day’s calories in a tiny dish of nuts.
Walnuts
Popularly associated with brain health (perhaps easy to remember because of their appearance), they really are good for the brain:
Check it out: Beneficial Effects of Walnuts on Cognition and Brain Health
Cashews
A personal favorite of this writer for their versatility in cooking, food prep, or just as a snack, they also do wonders for metabolic health:
Brazil nuts
The most exciting thing about these nuts is that they’re an incredibly potent source of selenium, which is important not just for hair/skin/nails as popularly marketed, but also for thyroid hormone production and DNA synthesis.
But don’t eat too many, because selenium is definitely one of those “you can have too much of a good thing” nutrients, and selenium poisoning can make your hair (however beautiful and shiny it got because of the selenium) fall out if you take too much.
Know the numbers: Brazil nuts and selenium—health benefits and risks
Bottom line on nuts:
- Nuts are a great and healthful part of almost anyone’s diet
- Obviously, if you have a nut allergy, then we’re sorry; this one won’t have helped you so much
- Almonds are one of the most healthful nuts out there
- Brazil nuts are incredibly potent, to the point where moderation is recommended
- A handful of mixed nuts per day is a very respectable option—when it comes to food and health, diversity is almost always good!
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White Bread vs White Pasta – Which Is Healthier?
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Our Verdict
When comparing a white bread to a white pasta, we picked the pasta.
Why?
Neither are great for the health! But like for like, the glycemic index of the bread is usually around 150% of the glycemic index for pasta.
All that said, we heartily recommend going for wholegrain in either case!
Bonus tip: cooking pasta “al dente”, so it is still at least a little firm to the bite, results in a lower GI compared to being boiled to death.
Bonus bonus tip: letting pasta cool increases resistant starches. You can then reheat the pasta without losing this benefit.
Please don’t put it in the microwave though; you will make an Italian cry. Instead, simply put it in a colander and pour boiling water over it, and then serve in your usual manner (a good approach if serving it separately is: put it in the serving bowl/dish/pan, drizzle a little extra virgin olive oil and a little cracked black pepper, stir to mix those in, and serve)
Enjoy!
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The GLP-1 Lifestyle – by Dr. Joshua Hackett
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While GLP-1 receptor agonists (i.e. semaglutide drugs such as Ozempic and Wegovy) have enjoyed the spotlight as a miracle cure (with some drawbacks), this book argues very reasonably that we should see them as a tool that we can use (or not) as part of a holistic approach to manage our metabolism.
Unusually, Dr. Hackett doesn’t argue strongly for one way or another, when it comes to using GLP-1 RAs. Rather, he makes the case that they indeed have pros and cons, and we should not only be aware of those pros and cons before making a decision either way, but also, we must understand the process of what goes on.
In contrast to the “inject it and forget it” marketing, he explains how if we actually understand what’s happening in our metabolism, we can improve things for ourselves and, at the very least, avoid sabotaging ourselves. Again, this knowledge is applicable with or without the drugs.
Much of the book is spent covering the physiological underpinnings and how things work for people of various different sizes and metabolic rates, as well as everything you’d expect about dosing, side effects, and whatnot—as well as things you might not have considered closely related, such gut health, and the question of “is there any way to retain the slimmer figure after stopping?”.
The style is methodical and clear, and not at all sensationalized. It’s very much a “read it cover to cover” book rather than a “dip in” book, so be ready for that, though.
Bottom line: if you and/or a loved one are on GLP1-RAs—or on the fence about them—this is a very even-minded and helpfully explanatory book.
Click here to check out The GLP-1 Lifestyle, and transform your metabolism!
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Increase in online ADHD diagnoses for kids poses ethical questions
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In 2020, in the midst of a pandemic, clinical protocols were altered for Ontario health clinics, allowing them to perform more types of care virtually. This included ADHD assessments and ADHD prescriptions for children – services that previously had been restricted to in-person appointments. But while other restrictions on virtual care are back, clinics are still allowed to virtually assess children for ADHD.
This shift has allowed for more and quicker diagnoses – though not covered by provincial insurance (OHIP) – via a host of newly emerging private, for-profit clinics. However, it also has raised significant ethical questions.
It solves an equity issue in terms of rural access to timely assessments, but does it also create new equity issues as a privatized service?
Is it even feasible to diagnose a child for a condition like ADHD without meeting that child in person?
And as rates of ADHD diagnosis continue to rise, should health regulators re-examine the virtual care approach?
Ontario: More prescriptions, less regulation
There are numerous for-profit clinics offering virtual diagnoses and prescriptions for childhood ADHD in Ontario. These include KixCare, which does not offer the option of an in-person assessment. Another clinic, Springboard, makes virtual appointments available within days, charging around $2,600 for assessments, which take three to four hours. The clinic offers coaching and therapy at an additional cost, also not covered by OHIP. Families can choose to continue to visit the clinic virtually during a trial stage with medications, prescribed by a doctor in the clinic who then sends prescribing information back to the child’s primary care provider.
For-profit clinics like these are departing from Canada’s traditional single-payer health care model. By charging patients out-of-pocket fees for services, the clinics are able to generate more revenue because they are working outside of the billing standards for OHIP, standards that set limits on the maximum amount doctors can earn for providing specific services. Instead many services are provided by non-physician providers, who are not limited by OHIP in the same way.
Need for safeguards
ADHD prescriptions rose during the pandemic in Ontario, with women, people of higher income and those aged 20 to 24 receiving the most new diagnoses, according to research published in January 2024 by a team including researchers from the Centre for Addictions and Mental Health and Holland Bloorview Children’s Hospital. There may be numerous reasons for this increase but could the move to virtual care have been a factor?
Ontario psychiatrist Javeed Sukhera, who treats both children and adults in Canada and the U.S., says virtual assessments can work for youth with ADHD, who may receive treatment quicker if they live in remote areas. However, he is concerned that as health care becomes more privatized, it will lead to exploitation and over-diagnosis of certain conditions.
“There have been a lot of profiteers who have tried to capitalize on people’s needs and I think this is very dangerous,” he said. “In some settings, profiteering companies have set up systems to offer ADHD assessments that are almost always substandard. This is different from not-for-profit setups that adhere to quality standards and regulatory mechanisms.”
Sukhera’s concerns recall the case of Cerebral Inc., a New York state-based virtual care company founded in 2020 that marketed on social media platforms including Instagram and TikTok. Cerebral offered online prescriptions for ADHD drugs among other services and boasted more than 200,000 patients. But as Dani Blum reported in the New York Times, Cerebral was accused in 2023 of pressuring doctors on staff to prescribe stimulants and faced an investigation by state prosecutors into whether it violated the U.S. Controlled Substances Act.
“At the start of the pandemic, regulators relaxed rules around medical prescription of controlled substances,” wrote Blum. “Those changes opened the door for companies to prescribe and market drugs without the protocols that can accompany an in-person visit.”
Access increased – but is it equitable?
Virtual care has been a necessity in rural areas in Ontario since well before the pandemic, although ADHD assessments for children were restricted to in-person appointments prior to 2020.
But ADHD assessment clinics that charge families out-of-pocket for services are only accessible to people with higher incomes. Rural families, many of whom are low income, are unable to afford thousands for private assessments, let alone the other services upsold by providers. If the private clinic/virtual care trend continues to grow unchecked, it may also attract doctors away from the public model of care since they can bill more for services. This could further aggravate the gap in care that lower income people already experience.
This could further aggravate the gap in care that lower income people already experience.
Sukhera says some risks could be addressed by instituting OHIP coverage for services at private clinics (similar to private surgical facilities that offer mixed private/public coverage), but also with safeguards to ensure that profits are reinvested back into the health-care system.
“This would be especially useful for folks who do not have the income, the means to pay out of pocket,” he said.
Concerns of misdiagnosis and over-prescription
Some for-profit companies also benefit financially from diagnosing and issuing prescriptions, as has been suggested in the Cerebral case. If it is cheaper for a clinic to do shorter, virtual appointments and they are also motivated to diagnose and prescribe more, then controls need to be put in place to prevent misdiagnosis.
The problem of misdiagnosis may also be related to the nature of ADHD assessments themselves. University of Strathclyde professor Matthew Smith, author of Hyperactive: The Controversial History of ADHD, notes that since the publication of Diagnostic and Statistical Manual of Mental Disorders in 1980, assessment has typically involved a few hours of parents and patients providing their subjective perspectives on how they experience time, tasks and the world around them.
“It’s often a box-ticking exercise, rather than really learning about the context in which these behaviours exist,” Smith said. “The tendency has been to use a list of yes/no questions which – if enough are answered in the affirmative – lead to a diagnosis. When this is done online or via Zoom, there is even less opportunity to understand the context surrounding behaviour.”
Smith cited a 2023 BBC investigation in which reporter Rory Carson booked an in-person ADHD assessment at a clinic and was found not to have the condition, then had a private online assessment – from a provider on her couch in a tracksuit – and was diagnosed with ADHD after just 45 minutes, for a fee of £685.
What do patients want?
If Canadian regulators can effectively tackle the issue of privatization and the risk of misdiagnosis, there is still another hurdle: not every youth is willing to take part in virtual care.
Jennifer Reesman, a therapist and Training Director for Neuropsychology at the Chesapeake Center for ADHD, Learning & Behavioural Health in Maryland, echoed Sukhera’s concerns about substandard care, cautioning that virtual care is not suitable for some of her young clients who had poor experiences with online education and resist online health care. It can be an emotional issue for pediatric patients who are managing their feelings about the pandemic experience.
“We need to respect what their needs are, not just the needs of the provider,” says Reesman.
In 2020, Ontario opted for virtual care based on the capacity of our health system in a pandemic. Today, with a shortage of doctors, we are still in a crisis of capacity. The success of virtual care may rest on how engaged regulators are with equity issues, such as waitlists and access to care for rural dwellers, and how they resolve ethical problems around standards of care.
Children and youth are a distinct category, which is why we had restrictions on virtual ADHD diagnosis prior to the pandemic. A question remains, then: If we could snap our fingers and have the capacity to provide in-person ADHD care for all children, would we? If the answer to that question is yes, then how can we begin to build our capacity?
This article is republished from healthydebate under a Creative Commons license. Read the original article.
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Apples vs Carrots – Which is Healthier?
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
Our Verdict
When comparing apples to carrots, we picked the carrots.
Why?
Both are sweet crunchy snacks, both rightly considered very healthy options, but one comes out clearly on top…
Both contain lots of antioxidants, albeit mostly different ones. They’re both good for this.
Looking at their macros, however, apples have more carbs while carrots have more fiber. The carb:fiber ratio in apples is already sufficient to make them very healthy, but carrots do win.
In the category of vitamins, carrots have many times more of vitamins A, B1, B2, B3, B5, B6, B9, C, E, K, and choline. Apples are not higher in any vitamins.
In terms of minerals, carrots have a lot more calcium, copper, iron, magnesium, manganese, phosphorus, potassium, selenium, and zinc. Apples are not higher in any minerals.
If “an apple a day keeps the doctor away”, what might a carrot a day do?
Want to learn more?
You might like to read:
Sugar: From Apples to Bees, and High-Fructose C’s
Take care!
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