The Physical Exercises That Build Your Brain
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Jim Kwik: from broken brain to brain coach
This is Jim Kwik. He suffered a traumatic brain injury as a small child, and later taught himself to read and write by reading comic books. He became fascinated with the process of learning, and in his late 20s he set up Kwik Learning, to teach accelerated learning in classrooms and companies, which he continued until 2009 when he launched his online learning platform. His courses have now been enjoyed by people in 195 countries.
So, since accelerated learning is his thing, you might wonder…
What does he have to share that we can benefit from in the next five minutes?
Three brain exercises to improve memory and concentration
A lot of problems we have with working memory are a case of executive dysfunction, but there are tricks we can use to get our brains into gear and make them cumulatively stronger:
First exercise
You can strengthen your corpus callosum (the little bridge between the two hemispheres of the brain) by performing a simple kinesiological exercise, such as alternating touching your left elbow to your right knee, and touching your right elbow to your left knee.
Do it for about a minute, but the goal here is not a cardio exercise, it’s accuracy!
You want to touch your elbow and opposite knee to each other as precisely as possible each time. Not missing slightly off to the side, not falling slightly short, not hitting it too hard.
Second exercise
Put your hands out in front of you, as though you’re about to type at a keyboard. Now, turn your hands palm-upwards. Now back to where they were. Now palm-upwards again. Got it? Good.
That’s not the exercise, the exercise is:
You’re now going to do the same thing, but do it twice as quickly with one hand than the other. So they’ll still be flipping to the same basic “beat”, put it in musical terms, the tempo on one hand will now be twice that of the other. When you get the hang of that, switch hands and do the other side.
This is again about the corpus callosum, but it’s now adding an extra level of challenge because of holding the two rhythms separately, which is also working the frontal lobe of the cerebral cortex.
The pre-frontal cortex in particular is incredibly important to executive function, self-discipline, and being able to “do” delayed gratification. So this exercise is really important!
Third exercise
This one works the same features of the brain, but most people find it harder. So, consider it a level-up on the previous:
Imagine there’s a bicycle wheel in front of you (as though the bike is facing you at chest-height). Turn the wheel towards you with your hands, one on each side.
Now, do the same thing, but each of your hands is going in the opposite direction. So one is turning the wheel towards you; the other is turning it away from you.
Now, do the same thing, but one hand goes twice as quickly as the other.
Switch sides.
Why is this harder for most people than the previous? Because the previous involved processing discrete (distinct from each other) movements while this one involves analog continuous movements.
It’s like reading an analog clock vs a digital clock, but while using both halves of your brain, your corpus callosum, your pre-frontal cortex, and the motor cortex too.
Want to learn more?
You might enjoy his book, which as well as offering exercises like the above, also offers a lot about learning strategies, memory processes, and generally building a quicker more efficient brain:
Limitless: Upgrade Your Brain, Learn Anything Faster, and Unlock Your Exceptional Life
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Hair-Loss Remedies, By Science
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10almonds Gets Hairy
Hair loss is a thing that at some point affects most men and a large minority of women. It can be a source of considerable dysphoria for both, as it’s often seen as a loss of virility/femininity respectively, and is societally stigmatized in various ways.
Today we’re going to focus on the most common kind: androgenic alopecia, which is called “male pattern baldness” in men and “female pattern baldness” in women, despite being the same thing.
We won’t spend a lot of time on the science of why this happens (we’re going to focus on the remedies instead), but suffice it to say that genes and hormones both play a role, with dihydrogen testosterone (DHT) being the primary villain in this case.
We’ve talked before about the science of 5α-reductase inhibitors to block the conversion of regular testosterone* to DHT, its more potent form:
One Man’s Saw Palmetto Is Another Woman’s Serenoa Repens…
*We all make this to a greater or lesser degree, unless we have had our ovaries/testes removed.
Finasteride
Finasteride is a 5α-reductase inhibitor that performs similarly to saw palmetto, but comes in tiny pills instead of needing to take a much higher dose of supplement (5mg of finasteride is comparable in efficacy to a little over 300mg of saw palmetto).
Does it work? Yes!
Any drawbacks? A few:
- It’ll take 3–6 months to start seeing effects. This is because of the hormonal life-cycle of human hairs.
- Common side-effects include ED.
- It is popularly labelled/prescribed as “only for men”
On that latter point: the warnings about this are severe, detailing how women must not take it, must not even touch it if it has been cut up or crushed.
However… That’s because it can carry a big risk to our unborn fetuses. So, if we are confident we definitely don’t have one of those, it’s not actually applicable to us.
That said, finasteride’s results in women aren’t nearly so clear-cut as in men (though also, there has been less research, largely because of the above). Here’s an interesting breakdown in more words than we have room for here:
Finasteride for Women: Everything You Need to Know
Spironolactone
This one’s generally prescribed to women, not men, largely because it’s the drug sometimes popularly known as a “chemical castration” drug, which isn’t typically great marketing for men (although it can be applied topically, which will have less of an effect on the rest of the body). For women, this risk is simply not an issue.
We’ll be brief on this one, but we’ll just drop this, so that you know it’s an option that works:
❝Spironolactone is an effective and safe treatment of androgenic alopecia which can enhance the efficacy when combined with other conventional treatments such as minoxidil.
Topical spironolactone is safer than oral administration and is suitable for both male and female patients, and is expected to become a common drug for those who do not have a good response to minoxidil❞
Minoxidil
This one is available (to men and women) without prescription. It’s applied topically, and works by shortcutting the hair’s hormonal growth cycle, to reduce the resting phase and kick it into a growth phase.
Does it work? Yes!
Any drawbacks? A few:
- Whereas you’ll remember finasteride takes 3–6 months to see any effect, this one will have an effect very quickly
- Specifically, the immediate effect is: your rate of hair loss will appear to dramatically speed up
- This happens because when hairs are kicked into their growth phase if they were in a resting phase, the first part of that growth phase is to shed each old hair to make room for the new one
- You’ll then need the same 3–6 months as with finasteride, to see the regrowth effects
- If you stop using it, you will immediately shed whatever hair you gained by this method
Why do people choose this over finasteride? For one of three reasons, mainly:
- They are women, and not offered finasteride
- They are men, and do not want the side effects of finasteride
- They just saw an ad and tried it
As to how it works:
Some final notes:
There are some other contraindications and warnings with each of these drugs by the way, so do speak with your doctor/pharmacist. For example:
- Finasteride can tax the liver a little
- Spironolactone can reduce bone turnover
- Minoxidil is a hypotensive; this shouldn’t be an issue for most people, but for some people it could be a problem
There are other hair loss remedies and practices, but the above three are the heavy-hitters, so that’s what we spent our time/space on today. We’ll perhaps cover the less powerful (but less risky) options one of these days.
Meanwhile, take care!
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Turmeric (Curcumin) Dos and Don’ts With Dr. Kim
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Turmeric is a fabulous spice, most well-known for its anti-inflammatory powers; its antioxidant effects benefit all of the body, including the brain. While it fights seemingly everything from arthritis to atherosclerosis to Alzheimer’s and more, it also boosts brain-derived neurotrophic factor, looks after your cardiovascular health, holds back diabetes, reduces the risk of cancer, fights depression, slows aging, and basically does everything short of making you sing well too.
Dr. Leonid Kim goes over the scientific evidence for these, and also talks about some of the practicalities of taking turmeric, and safety considerations.
For the most part, turmeric is very safe even at high doses (up to 8g at least); indeed, at smaller doses (e.g. 500mg) it largely does the same job as non-steroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen, with fewer problems.
It also does the job of several antidiabetic medications, by increasing uptake of glucose (thus reducing blood sugar levels) while simultaneously decreasing the glucose secretion from the liver. It does this by regulating the AMPK signalling pathway, just like metformin—while again, being safer.
Dr. Kim also looks at the (good!) evidence for turmeric in managing PCOS and undoing NAFLD; so far, so good.
Dosage: he bids us pay attention whether we’re taking it as turmeric itself or as curcumin standardized extract. The latter is the active compound, and in principle more powerful, but in practice it can get metabolized too quickly and easily—before it can have its desired effect. So, turmeric itself is a very good choice.
Absorption: since we do want it to be absorbed well, though, he does recommend taking it with piperine (as in black pepper).
You may be thinking: isn’t this going to cause the same problem you were just talking about, and cause it to be metabolized too quickly? And the answer is: no! How piperine works is almost the opposite; it protects the curcumin in the turmeric from our digestive enzymes, and thus allows them to get absorbed without being broken down too quickly—thus increasing the bioavailability by slowing the process down.
Lipophilia: no, that’s not a disease (or a fetish), rather it means that curcumin is soluble in fats, so we should take it near in time to a meal that contains at least a tablespoon of oil in total (so if you’re cooking a curry with your turmeric, this need is covered already, for example).
Supplement provenance: he recommends picking a supplement that’s been tested by a reputable 3rd party, as otherwise turmeric can be quite prone to impurities (which can include lead and arsenic, so, not great).
Contraindications: for some people, curcumin can cause gastrointestinal issues (less likely if taking with meals), and also, it can interact with blood-thinners. While taking aspirin or curcumin alone might help avoid circulatory problems, taking both could increase the bleeding risk for some people, for example. Similarly, if taking curcumin and metformin while diabetic, one must watch out for the combination being too effective at lowering blood sugar levels, and thus causing hypoglycemia instead. Similar deal with blood pressure medications.
There’s more in the video though (yes really; we know we wrote a lot but it’s information-dense), so do check it out:
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Want to know more?
You can also check out our related articles:
Why Curcumin (Turmeric) Is Worth Its Weight In Gold
Black Pepper’s Impressive Anti-Cancer Arsenal (And More)Share This Post
When the Body Says No – by Dr. Gabor Maté
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We know that chronic stress is bad for us because of what it does to our cortisol levels, so what is the rest of this book about?
Dr. Gabor Maté is a medical doctor, heavily specialized in the impact of psychological trauma on long term physical health.
Here, he examies—as the subtitle promises—the connection between stress and disease. As it turns out, it’s not that simple.
We learn not just about the impact that stress has on our immune system (including increasing the risk of autoimmune disorders like rheumatoid arthritis), the cardiovascular system, and various other critical systems fo the body… But also:
- how environmental factors and destructive coping styles contribute to the onset of disease, and
- how traumatic events can warp people’s physical perception of pain
- how certain illnesses are associated with particular personality types.
This latter is not “astrology for doctors”, by the way. It has more to do with what coping strategies people are likely to employ, and thus what diseases become more likely to take hold.
The book has practical advice too, and it’s not just “reduce your stress”. Ideally, of course, indeed reduce your stress. But that’s a) obvious b) not always possible. Rather, Dr. Maté explains which coping strategies result in the least prevalence of disease.
In terms of writing style, the book is very much easy-reading, but be warned that (ironically) this isn’t exactly a feel-good book. There are lot of tragic stories in it. But, even those are very much well-worth reading.
Bottom line: if you (and/or a loved one) are suffering from stress, this book will give you the knowledge and understanding to minimize the harm that it will otherwise do.
Click here to check out When The Body Says No, and take good care of yourself; you’re important!
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Considering taking Wegovy to lose weight? Here are the risks and benefits – and how it differs from Ozempic
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The weight-loss drug Wegovy is now available in Australia.
Wegovy is administered as a once-weekly injection and is approved specifically for weight management. It’s intended to be used in combination with a reduced-energy diet and increased physical activity.
So how does Wegovy work and how much weight can you expect to lose while taking it? And what are the potential risks – and costs – for those who use it?
Let’s look at what the science says.
Halfpoint/Shutterstock What is Wegovy?
Wegovy is a brand name for the medication semaglutide. Semaglutide is a glucagon-like peptide-1 receptor agonist (GLP-1RA). This means it makes your body’s own glucagon-like peptide-1 hormone, called GLP-1 for short, work better.
Normally when you eat, the body releases the GLP-1 hormone which helps signal to your brain that you are full. Semaglutides enhance this effect, leading to a feeling of fullness, even when you haven’t eaten.
Another role of GLP-1 is to stimulate the body to produce more insulin, a hormone which helps lower the level of glucose (sugar) in the blood. That’s why semaglutides have been used for several years to treat type 2 diabetes.
Wegovy is self-injected once a week. S Becker/Shutterstock How does Wegovy differ from Ozempic?
Like Wegovy, Ozempic is a semaglutide. The way Wegovy and Ozempic work in the body are essentially the same. They’re made by the same pharmaceutical company, Novo Nordisk.
But there are two differences:
1) They are approved for two different (but related) reasons.
In Australia (and the United States), Ozempic is approved for use to improve blood glucose levels in adults with type 2 diabetes. By managing blood glucose levels effectively, the medication aims to reduce the risk of major complications, such as heart disease.
Wegovy is approved for use alongside diet and exercise for people with a body mass index (BMI) of 30 or greater, or 27 or greater but with other conditions such as high blood pressure.
Wegovy can also be used in people aged 12 years and older. Like Ozempic, Wegovy aims to reduce the risk of future health complications, including heart disease.
2) They are both injected but come in different strengths.
Ozempic is available in pre-loaded single-dose pens with varying dosages of 0.25 mg, 0.5 mg, 1 mg, or 2 mg per injection. The dose can be slowly increased, up to a maximum of 2 mg per week, if needed.
Wegovy is available in prefilled single-dose pens with doses of 0.25 mg, 0.5 mg, 1 mg, 1.7 mg, or 2.4 mg. The treatment starts with a dose of 0.25 mg once weekly for four weeks, after which the dose is gradually increased until reaching a maintenance dose of 2.4 mg weekly.
While it’s unknown what the impact of Wegovy’s introduction will be on Ozempic’s availability, Ozempic is still anticipated to be in low supply for the remainder of 2024.
Is Wegovy effective for weight loss?
Given Wegovy is a semaglutide, there is very strong evidence it can help people lose weight and maintain this weight loss.
A recent study found that over four years, participants taking Wevovy as indicated experienced an average weight loss of 10.2% body weight and a reduction in waist circumference of 7.7cm.
For those who stop taking the medication, analyses have shown that about two-thirds of weight lost is regained.
Wegovy can help people lose weight and maintain their weight loss – while they take the drug. Mladen Mitrinovic/Shutterstock What are the side effects of Wegovy?
The most common side effects are nausea and vomiting.
However, other serious side effects are also possible because of the whole-of-body impact of the medication. Thyroid tumours and cancer have been detected as a risk in animal studies, yet are rarely seen in human scientific literature.
In the four-year Wegovy trial, 16.6% of participants who received Wegovy (1,461 people) experienced an adverse event that led to them permanently discontinuing their use of the medication. This was higher than the 8.2% of participants (718 people) who received the placebo (with no active ingredient).
Side effects included gastrointestinal disorders (including nausea and vomiting), which affected 10% of people who used Wegovy compared to 2% of people who used the placebo.
Gallbladder-related disorders occurred in 2.8% of people who used Wegovy, and 2.3% of people who received the placebo.
Recently, concerns about suicidal thoughts and behaviours have been raised, after a global analysis reviewed more than 36 million reports of adverse events from semaglutide (Ozempic or Wegovy) since 2000.
There were 107 reports of suicidal thoughts and self-harm among people taking semaglutide, sadly including six actual deaths. When people stopped the medication, 62.5% found the thoughts went away. What we don’t know is whether dose, weight loss, or previous mental health status or use of antidepressants had a role to play.
Finally, concerns are growing about the negative effect of semaglutides on our social and emotional connection with food. Anecdotal and scientific evidence suggests people who use semaglutides significantly reduce their daily dietary intake (as anticipated) by skipping meals and avoiding social occasions – not very enjoyable for people and their loved ones.
How can people access Wegovy?
Wegovy is available for purchase at pharmacists with a prescription from a doctor.
But there is a hefty price tag. Wegovy is not currently subsidised through the Pharmaceutical Benefits Scheme, leaving patients to cover the cost. The current cost is estimated at around A$460 per month dose.
If you’re considering Wegovy, make an appointment with your doctor for individual advice.
Lauren Ball, Professor of Community Health and Wellbeing, The University of Queensland and Emily Burch, Accredited Practising Dietitian and Lecturer, Southern Cross University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Focusing On Health In Our Sixties
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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
❝What happens when you age in your sixties?❞
The good news is, a lot of that depends on you!
But, speaking on averages:
While it’s common for people to describe being over 50 as being “over the hill”, halfway to a hundred, and many greetings cards and such reflect this… Biologically speaking, our 60s are more relevant as being halfway to our likely optimal lifespan of 120. Humans love round numbers, but nature doesn’t care for such.
- In our 60s, we’re now usually the “wrong” side of the menopausal metabolic slump (usually starting at 45–55 and taking 5–10 years), or the corresponding “andropause” where testosterone levels drop (usually starting at 45 and a slow decline for 10–15 years).
- In our 60s, women will now be at a higher risk of osteoporosis, due to the above. The risk is not nearly so severe for men.
- In our 60s, if we’re ever going to get cancer, this is the most likely decade for us to find out.
- In our 60s, approximately half of us will suffer some form of hearing loss
- In our 60s, our body has all but stopped making new T-cells, which means our immune defenses drop (this is why many vaccines/boosters are offered to over-60s, but not to younger people)
While at first glance this does not seem a cheery outlook, knowledge is power.
- We can take HRT to avoid the health impact of the menopause/andropause
- We can take extra care to look after our bone health and avoid osteoporosis
- We can make sure we get the appropriate cancer screenings when we should
- We can take hearing tests, and if appropriate find the right hearing aids for us
- We can also learn to lip-read (this writer relies heavily on lip-reading!)
- We can take advantage of those extra vaccinations/boosters
- We can take extra care to boost immune health, too
Your body has no idea how many times you’ve flown around the sun and nor does it care. What actually makes a difference to it, is how it has been treated.
See also: Milestone Medical Tests You Should Take in Your 60s, 70s, and Beyond
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Felt Time – by Dr. Marc Wittmann
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This book goes far beyond the obvious “time flies when you’re having fun / passes slowly when bored”, or “time seems quicker as we get older”. It does address those topics too, but even in doing so, unravels deeper intricacies within.
The author, a research psychologist, includes plenty of reference to actual hard science here, and even beyond subjective self-reports. For example, you know how time seems to slow down upon immediate apparent threat of violent death (e.g. while crashing, while falling, or other more “violent human” options)? We learn of an experiment conducted in an amusement park, where during a fear-inducing (but actually safe) plummet, subjective time slows down yes, but measures of objective perception and cognition remained the same. So much for adrenal superpowers when it comes to the brain!
We also learn about what we can change, to change our perception of time—in either direction, which is a neat collection of tricks to know.
The style is on the dryer end of pop-sci; we suspect that being translated from German didn’t help its levity. That said, it’s not scientifically dense either (i.e. not a lot of jargon), though it does have many references (which we like to see).
Bottom line: if you’ve ever wished time could go more quickly or more slowly, this book can help with that.
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