The Real Benefit Of Genetic Testing
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Genetic Testing: Health Benefits & Methods
Genetic testing is an oft-derided American pastime, but there’s a lot more to it than finding out about your ancestry!
Note: because there are relatively few companies offering health-related genetic testing services, and we are talking about the benefits of those services, some of this main feature may seem like an advert.
It’s not; none of those companies are sponsoring us, and if any of them become a sponsor at some point, we’ll make it clear and put it in the clearly-marked sponsor segment.
As ever, our only goal here is to provide science-backed information, to enable you to make your own, well-informed, decisions.
Health genomics & genetic testing
The basic goal of health genomics and genetic testing is to learn:
- What genetic conditions you have
- Clearcut genetic conditions, such as Fragile X syndrome, or Huntington’s disease
- What genetic predispositions you have
- Such as an increased/decreased risk for various kinds of cancer, diabetes, heart conditions, and so forth
- What genetic traits you have
- These may range from “blue eyes” to “superathlete muscle type”
- More specifically, pharmacogenomic information
- For example, “fast caffeine metabolizer” or “clopidogrel (Plavix) non-responder” (i.e., that drug simply will not work for you)
Wait, what’s the difference between health genomics and genetic testing?
- Health genomics is the science of how our genes affect our health.
- Genetic testing can be broadly defined as the means of finding out which genes we have.
A quick snippet…
More specifically, a lot of these services look at which single nucleotide polymorphisms (SNPs, pronounced “snips”) we have. While we share almost all of our DNA with each other (and indeed, with most vertebrates), our polymorphisms are the bits that differ, and are the bits that, genetically speaking, make us different.
So, by looking just at the SNPs, it means we “only” need to look at about 3,000,000 DNA positions, and not our entire genome. For perspective, those 3,000,000 DNA positions make up about 0.1% of our whole genome, so without focusing on SNPs, the task would be 1000x harder.
For example, the kind of information that this sort of testing may give you, includes (to look at some “popular” SNPs):
- rs53576 in the oxytocin receptor influences social behavior and personality
- rs7412 and rs429358 can raise the risk of Alzheimer’s disease by more than 10x
- rs6152 can influence baldness
- rs333 resistance to HIV
- rs1800497 in a dopamine receptor may influence the sense of pleasure
- rs1805007 determines red hair and sensitivity to anesthetics
- rs9939609 triggers obesity and type-2 diabetes
- rs662799 prevents weight gain from high fat diets
- rs12255372 linked to type-2 diabetes and breast cancer
- rs1799971 makes alcohol cravings stronger
- rs17822931 determines earwax, sweating and body odor
- rs1333049 coronary heart disease
- rs1051730 and rs3750344 nicotine dependence
- rs4988235 lactose intolerance
(You can learn about these and more than 100,000 other SNPs at SNPedia.com)
I don’t know what SNPs I have, and am disinclined to look them up one by one!
The first step to knowing, is to get your DNA out of your body and into a genetic testing service. This is usually done by saliva or blood sample. This writer got hers done many years ago by 23andMe and was very happy with that service, but there are plenty of other options.
Healthline did an independent review of the most popular companies, so you might like to check out:
Healthline: Best DNA Testing Kits of 2023
Those companies will give you some basic information, such as “6x higher breast cancer risk” or “3x lower age-related macular degeneration risk” etc.
However, to really get bang-for-buck, what you want to do next is:
- Get your raw genetic data (the companies above should provide it); this will probably look like a big text file full of As, Cs, Gs, and Ts, but it make take another form.
- Upload it to Promethease. When this writer got hers done , the cost was $2; that price has now gone up to a whopping $12.
- You will then get a report that will cross-reference your data with everything known about SNPs, and give a supremely comprehensive, readable-to-the-human-eye, explanation of what it all means for you—from much more specific health risk prognostics, to more trivial things like whether you can roll your tongue or smell decomposed asparagus metabolites in urine.
A note on privacy: anything you upload to Promethease will be anonymized, and/but in doing so, you consent to it going into the grand scientific open-source bank of “things we know about the human genome”, and thus contribute to the overall sample size of genetic data.
In our opinion, it means you’re doing your bit for science, without personal risk. But your opinion may differ, and that’s your decision to make.
Lastly, on the pros and cons of pharmacogenetic testing specifically:
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HIIT, But Make It HIRT
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This May HIRT A Bit
This is Ingrid Clay. She’s a professional athlete, personal trainer, chef*, and science writer.
*A vegan bodybuilding chef, no less:
Click Here If The Embedded Video Doesn’t Load Automatically!
For those who prefer reading…
This writer does too
We’ve previously reviewed her book, “Science of HIIT”, and we’re going to be talking a bit about High Intensity Interval Training today.
If you’d like to know a little more about the woman herself first, then…
Centr | Meet Ingrid: Your HIIT HIRT trainer
Yes, that is Centr, as in Chris Hemsworth’s personal training app, where Clay is the resident HIIT & HIRT expert & trainer.
What’s this HIIT & HIRT?
“HIIT” is High Intensity Interval Training, which we’ve written about before:
How To Do HIIT (Without Wrecking Your Body)
Basically, it’s a super-efficient way of working out, that gets better results than working out for longer with other methods, especially because of how it raises the metabolism for a couple of hours after training (this effect is called EPOC, by the way—Excessive Post-exercise Oxygen Consumption), and is a good thing.
You can read more about the science of it, in the above-linked main feature.
And HIRT?
“HIRT” is High Intensity Resistance Training, and is resistance training performed with HIIT principles.
See also: Chris Hemsworth’s Trainer Ingrid Clay Explains HIRT
An example is doing 10 reps of a resistance exercise (e.g., a dumbbell press) every minute on odd-numbered minutes, and 10 reps of a different resistance exercise (e.g. dumbbell squats) on even-numbered minutes.
If dumbbells aren’t your thing, it could be resistance bands, or even the floor (press-ups are a resistance exercise!)
For HIRT that’s not also a cardio exercise, gaps between different exercises can be quite minimal, as we only need to confuse the muscles, not the heart. So, effectively, it becomes a specially focused kind of circuit training!
If doing planks though, you might want to check out Clay’s troubleshooting guide:
Want more from Clay?
Here she gives a full 20-minute full-body HIIT HIRT workout:
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Enjoy!
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Keep Cellulite At Bay
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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 😎
❝Does anything actually get rid of cellulite? Nothing seems to❞
Let’s get the bad news over with in one go:
Nothing (that the scientific world currently knows of) can get rid of cellulite permanently, nor completely guard against it proactively. Which, given that it affects up to 98% of women to some degree, and often shows up not long after puberty (though it can appear at any time and often increases later in life), any pre-emptive health regime would need to be started as a child in any case.
As with many things that predominantly affect women, the world of medicine isn’t entirely sure what causes it, let alone how to effectively treat it.
Obviously hormones are implicated, namely estrogen.
Obviously adiposity is implicated, because one can’t have dimples in one’s fat if one doesn’t have enough fat to dimple.
Other hypothesized contributory factors include genetics, poor diet, inactivity, unhealthy lifestyle (in ways not previously mentioned, e.g. use of alcohol, tobacco, etc), accumulated toxins, and pregnancy.
Here’s an old paper (from 2004); today’s reviews say pretty much the same thing, but we love how succinctly (albeit, somewhat depressingly) this abstract states how little we know and how little we can do:
Cellulite: a review of its physiology and treatment
However, all is not lost!
There are some things that can affect how much cellulite we get, and there are some things that can reduce it, and even some things that can get rid of it completely—albeit temporarily.
First, a quick refresher on what it actually is, physiologically speaking: cellulite occurs when connective tissue bands pull the skin down in places, where fat tissue has been able to squeeze through. One of the reasons it is hypothesized women get this more than men is because our fat is not merely different in distribution and overall percentage, but also in how the fat cells stack up; we generally have have of a vertical stacking structure going on, while men generally have a more horizontal structure. This means that it can be easier for ours to get moved about differently, causing the connective tissue to pull on the skin unevenly in places.
With that in mind…
Prevention is, as we say, probably impossible if your body is running on estrogen. However, those contributory factors we mentioned above? Most of those are modifiable, including these things that it is hypothesized can reduce it:
Diet: as it seems to be worsened by inflammation (what isn’t?), an anti-inflammatory diet is recommended.
Exercise: there are three things here: 1) exercises to improve circulation and thus the body’s ability to sort things out by itself 2) HIIT exercise to reduce body fat percentage, if one has a high enough starting body fat percentage for that to be a healthy goal 3) mobility exercises, to ensure our connective tissues are the right amount of mobile.
Creams and lotions
These reduce the superficial appearance of cellulite, without actually treating the thing itself. Mostly they are caffeine-based, which when used topically increases blood flow and works as a local diuretic, reducing the water content of the fat cells, diminishing the appearance of the cellulite by making each fat cell physically smaller (while still containing the same amount of fat, and it’ll bounce back in size as soon as the body can restore osmotic balance).
Medical procedures
There are too many of these to discuss them all separately, but they all work on the principle of breaking up the tough bands of connective tissue to eliminate the dimpling of cellulite.
The methods they use vary from ultrasound to cryolipolysis to lasers to “vacuum-assisted precise tissue release”, which involves a suction pump and a multipronged robotic assembly with needles to administer anaesthetic as it goes and small blades to cut the connective tissues under the skin:
Tissue Stabilized–Guided Subcision for the Treatment of Cellulite
That last one definitely sounds like the least fun, but it’s also the only one that doesn’t take months to maybe see results.
Cellulite can and almost certainly will come back after all of these.
Home remedies
Aside from at-home versions of the above (not the robots with vacuum pumps and needles and microblades, hopefully, but for example homemade caffeine creams), and of course diet and exercise which can be considered “home remedies”, there are two more things worth mentioning:
Dry brushing: using a body brush to, as the name suggests, simply brush one’s skin. The “dry” aspect here is simply that it’s not done in the bath or shower; it’s done while dry. It can improve local circulation of blood and lymph, allowing for better detoxification and redistribution of needed bodily resources.
Here’s an example dry brushing body brush on Amazon; this writer has one and hates it, but I’ve also tried with other kinds of brush and hate them too, so it seems to be a me thing rather than a brush thing, and I have desisted in trying, now. Maybe you will like it better; many people do.
Self-massage: or massage by someone else, if that’s an option for you and you prefer. In this case, it works by a different mechanism than dry brushing; this time it’s working by the same principle as the medical techniques described in the previous section; it’s physically breaking down the toughened bits of connective tissue.
Here’s an example wooden massage roller on Amazon; this writer has one and loves it; it’s sooooooo good. I got it as a matter of general maintenance for my fascia, but it’s also very good if I get a muscular pain now and again. As for cellulite, I personally get just a little cellulite sometimes (in the backs of my thighs), and whenever I use this regularly, it goes away for at least a while.
A quick note in closing
Cellulite is normal for women and is not unhealthy. Much like gray hair for example, it’s something that can be increased by poor health, but the thing itself isn’t intrinsically unhealthy, and most of us get it to some degree at some point.
Nevertheless, aesthetic factors can also have a role to play in mental health, and we tend to feel best when we like the way our body looks. If for you that means wanting less/no cellulite, then the above are some ways towards that.
As a bonus, most of the nonmedical options are directly good for the physical health anyway, so doing them is of course good.
In particular that last one (the wooden massage roller), because that connective tissue we talked about? It matters for a lot more than just cellulite, and is heavily implicated in a lot of kinds of chronic pain, so it pays to keep it in good health:
Fascia: Why (And How) You Should Take Care Of Yours
(that article, also written by this same writer by the way, suggests a vibrating foam roller—those are very popular; I just really love my wooden one, and find it more effective)
Take care!
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The Seven Principles for Making Marriage Work – by Dr. John Gottman
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A lot of relationship advice can seem a little wishy-washy. Hardline clinical work, on the other hand, can seem removed from the complex reality of married life. Dr. Gottman, meanwhile, strikes a perfect balance.
He looks at huge datasets, and he listens to very many couples. He famously isolated four relational factors that predict divorce with 91% accuracy, his “Four Horsemen”:
- Criticism
- Contempt
- Defensiveness
- Stonewalling
He also, as the title of this book promises (and we get a chapter-by-chapter deep-dive on each of them) looks at “Seven principles for making marriage work”. They’re not one-word items, so including them here would take up the rest of our space, and this is a book review not a book summary. However…
Dr. Gottman’s seven principles are, much like his more famous “four horsemen”, deeply rooted in science, while also firmly grounded in the reality of individual couples. Essentially, by listening to very many couples talk about their relationships, and seeing how things panned out with each of them in the long-term, he was able to see what things kept on coming up each time in the couples that worked out. What did they do differently?
And, that’s the real meat of the book. Science yes, but lots of real-world case studies and examples, from couples that worked and couples that didn’t.
In so doing, he provides a roadmap for couples who are serious about making their marriage the best it can be.
Bottom line: this is a must-have book for couples in general, no matter how good or bad the relationship.
- For some it’ll be a matter of realising “You know what; this isn’t going to work”
- For others, it’ll be a matter of “Ah, relief, this is how we can resolve that!”
- For still yet others, it’ll be a matter of “We’re doing these things right; let’s keep them forefront in our minds and never get complacent!”
- And for everyone who is in a relationship or thinking of getting into one, it’s a top-tier manual.
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The Inflamed Mind – by Dr. Edward Bullmore
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Firstly, let’s note that this book was published in 2018, so the “radical new” approach is more like “tried and tested and validated” now.
Of course, inflammation in the brain is also linked to Alzheimer’s, Parkinson’s, and other neurodegenerative disorders, but that’s not the main topic here.
Dr. Bullmore, a medical doctor, psychiatrist, and neuroscientist with half the alphabet after his name, knows his stuff. We don’t usually include author bio information here, but it’s also relevant that he has published more than 500 scientific papers and is one of the most highly cited scientists worldwide in neuroscience and psychiatry.
What he explores in this book, with a lot of hard science made clear for the lay reader, is the mechanisms of action of depression treatments that aren’t just SSRIs, and why anti-inflammatory approaches can work for people with “treatment-resistant depression”.
The book was also quite prescient in its various declarations of things he expects to happen in the field in the next five years, because they’ve happened now, five years later.
Bottom line: if you’d like to understand how the mind and body affect each other in the cases of inflammation and depression, with a view to lessening either or both of those things, this is a book for you.
Click here to check out The Inflamed Mind, and take good care of yours!
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Beetroot vs Sweet Potato – Which is Healthier?
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Our Verdict
When comparing beetroot to sweet potato, we picked the sweet potato.
Why?
Quite a straightforward one today!
In terms of macros, sweet potato has more protein, carbs, and fiber. The glycemic index of both of these root vegetables is similar (and in each case varies similarly depending on how it is cooked), so we’ll call the winner the one that’s more nutritionally dense—the sweet potato.
Looking at vitamins next, beetroot has more vitamin B9 (and is in fact a very good source of that, unlike sweet potato), and/but sweet potato is a lot higher in vitamins A, B1, B2, B3, B5, B6, B7, C, E, K, and choline. And we’re talking for example more than 582x more vitamin A, more than 17x more vitamin E, more than a 10x more vitamin K, and at least multiples more of the other vitamins mentioned. So this category’s not a difficult one to call for sweet potato.
When it comes to minerals, beetroot has more selenium, while sweet potato has more calcium, copper, magnesium, manganese, phosphorus, and potassium. They’re approximately equal in iron and zinc. Another win for sweet potato.
Of course, enjoy both. But if you’re looking for the root vegetable that’ll bring the most nutrients, it’s the sweet potato.
Want to learn more?
You might like to read:
No, beetroot isn’t vegetable Viagra. But here’s what else it can do
Take care!
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Planning Ahead For Better Sleep
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Sleep: 6 Dimensions And 24 Hours!
This is Dr. Lisa Matricciani, a sleep specialist from the University of South Australia, where she teaches in the School of Health Sciences.
What does she want us to know?
Healthy sleep begins before breakfast
The perfect bedtime routine is all well and good, but we need to begin much earlier in the day, Dr. Matricciani advises.
Specifically, moderate to vigorous activity early in the day plays a big part.
Before breakfast is best, but even midday/afternoon exercise is associated with better sleep at night.
Read more: Daytime Physical Activity is Key to Unlocking Better Sleep
Plan your time well to sleep—but watch out!
Dr. Matricciani’s research has also found that while it’s important to plan around getting a good night’s sleep (including planning when this will happen), allocating too much time for sleep results in more restless sleep:
❝Allocating more time to sleep was associated with earlier sleep onsets, later sleep offsets, less efficient and more consistent sleep patterns for both children and adults.❞
Read more: Time use and dimensions of healthy sleep: A cross-sectional study of Australian children and adults
(this was very large study involving 1,168 children and 1.360 adults, mostly women)
What counts as good sleep quality? Is it just efficiency?
It is not! Although that’s one part of it. You may remember our previous main feature:
The 6 Dimensions Of Sleep (And Why They Matter)
Dr. Matricciani agrees:
❝Everyone knows that sleep is important. But when we think about sleep, we mainly focus on how many hours of sleep we get, when we should also be looking at our sleep experience as a whole❞
Read more: Trouble sleeping? You could be at risk of type 2 diabetes
That’s not a cheery headline, but here’s her paper about it:
And no, we don’t get a free pass on getting less sleep / less good quality sleep as we get older (alas):
Why You Probably Need More Sleep
So, time to get planning for the best sleep!
Enjoy videos?
Here’s how 7News Australia broke the news of Dr. Matricciani’s more recent work:
Rest well!
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Learn to Age Gracefully
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