The Neuroscience of You – by Dr. Chantel Prat
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The insides of people are rarely so standardized as one finds in a medical textbook, and that’s just as true of the brain as it is of any other organ—and often more so.
Our brains all look quite different from each other’s. Of course there are similarities; a wobbly mass of white and grey matter with tiny blood vessels running through. The constituent parts are (usually!) all present and correct. But… what is “correct”?
Dr. Chantel Prat takes us on a tour of the anatomical features that we may have grown or shrunken over the course of our life, according to how we’ve used them, or not. She also looks at what’s going on when it comes to the smaller scale—from the neuronal to the neurochemical.
We learn the truth (and myth) when it comes to left- and right-brainedness, and we learn how whether we saw that dress as black and blue or white and gold, depends on our circadian rhythm (and thus whether we have wired ourselves for perceiving colors more or less often under daylight or artificial light). And lots more.
The style throughout is very accessible, for a book that goes beyond most “how the brain works” books.
Bottom line: if you’re interested in the workings of your brain (as opposed to: a standardized Platonic ideal of what a brain might be), then this book will set you on the right track.
Click here to check out The Neuroscience of You, and learn more about what makes you you!
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Farmed Fish vs Wild, The Blood Pressure Sweet Spot, And More
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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
❝Maybe I missed it but the study on blood pressure did it say what the 2 numbers should read ideally?❞
We linked it at the top of the article rather than including it inline, as we were short on space (and there was a chart rather than a “these two numbers” quick answer), but we have a little more space today, so:
Category Systolic (mm Hg) Diastolic (mm Hg) Normal < 120 AND < 80 Elevated 120 – 129 AND < 80 Stage 1 – High Blood Pressure 130 – 139 OR 80 – 89 Stage 2 – High Blood Pressure 140 or higher OR 90 or higher Hypertensive Crisis Above 180 AND/OR Above 120 To oversimplify for a “these two numbers” answer, under 120/80 is generally considered good, unless it is under 90/60, in which case that becomes hypotension.
Hypotension, the blood pressure being too low, means your organs may not get enough oxygen and if they don’t, they will start shutting down.
To give you an idea how serious this, this is the closed-circuit equivalent of the hypovolemic shock that occurs when someone is bleeding out onto the floor. Technically, bleeding to death also results in low blood pressure, of course, hence the similarity.
So: just a little under 120/80 is great.
❝What could be easily digestible plant sources of protein for a vegetarian. My son is a gym holic and always looking for ways to get his protein from lentils other than eggs. He says to reach his protein requirement for the day, the amount of lentils he has to eat is sometimes heavy on the gut. Would really appreciate if you throw some light on this❞
Unless one has IBS or similar (or is otherwise unaccustomed to consuming healthy amounts of fiber), lentils shouldn’t be at all problematic for the digestion.
However, the digestive process can still be eased by (speaking specifically for lentils here) blending them (in the water they were cooked in). This thick tasty liquid can then be used as the base of a soup, for example.
Soy is an excellent source of complete protein too. Your son probably knows this because it’s in a lot of body-building supplements as soy protein isolate, but can also be enjoyed as textured soy protein (as in many plant-based meats), or even just soy beans (edamame). Tofu (also made from soy) is very versatile, and again can be blended to form the basis of a creamy sauce.
Mycoproteins (as found in “Quorn” brand products and other meat substitutes) also perform comparably to meat from animals:
Meatless Muscle Growth: Building Muscle Size and Strength on a Mycoprotein-Rich Vegan Diet
See also, for interest:
❝Is it good to eat farm raised fish?❞
We’ll answer this as a purely health-related question (and thus not considering economy, ecology, ethics, or taste).
It’s certainly not as good as wild-caught fish, for several reasons, some more serious than others:
Farmed fish can have quite a different nutritional profile to wild-caught fish, and also contain more contaminants, including heavy metals.
For example, farmed fish tend to have much higher fat content for the same amount of protein, but lower levels of minerals and other nutrients. Here are two side-by-side:
Wild-caught salmon | Farmed salmon
See also:
Quantitative analysis of the benefits and risks of consuming farmed and wild salmon
Additionally, because fish in fish farms tend to be very susceptible to diseases (because of the artificially cramped and overcrowded environment), fish farms tend to make heavy use of antibiotics, which can cause all sorts of problems down the line:
So definitely, “let the buyer beware”!
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14 Powerful Strategies To Prevent Dementia
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Dementia risk starts climbing very steeply after the age of 65, but it’s not entirely predetermined. Dr. Brad Stanfield, a primary care physician, has insights:
The strategies
We’ll not keep them a mystery; they are:
- Cognitive stimulation: which means genuinely challenging mental activities using a variety of mental faculties. This will usually mean that anything that is just “same old, same old” all the time will stop giving benefits after a short while once it becomes rote, and you’ll need something harder and/or different.
- Hearing health: being unable to participate in conversations increases dementia risk; hearing aids can help.
- Eyesight health: similar to the above; regular eye tests are good, and the use of glasses where appropriate.
- Depression management: midlife depression is linked to later life dementia, likely in large part due to social isolation and a lack of stimulation, but either way, treating depression earlier reduces later dementia risk.
- Exercising regularly: what’s good for the heart is good for the brain; the brain is a hungry organ and the blood is what feeds it (and removes things that shouldn’t be there)
- Head injury avoidance: even mild head injuries can cause problems down the road. Protecting one’s head in sports, and even while casually cycling, is important.
- Smoking cessation: just don’t smoke; if you smoke, make it a top priority to quit unless you are given direct strong medical advice to the contrary (there are cases, few and far between, whereby quitting smoking genuinely needs to be deferred until after something else is dealt with first, but they are a lot rarer than a lot of people who are simply afraid of quitting would like to believe)
- Cholesterol management: again, healthy blood means a healthy brain, and that goes for triglycerides too.
- Weight management: obesity, especially waist to hip ratio (indicating visceral abdominal fat specifically) is associated with many woes, including dementia.
- Diabetes management: once again, healthy blood means a healthy brain, and that goes for blood sugar management too.
- Blood pressure management: guess what, healthy blood still means a healthy brain, and that goes for blood pressure too.
- Alcohol reduction/cessation: alcohol is bad for pretty much everything, and for most people who drink, quitting is probably the top thing to do after quitting smoking.
- Social engagement: while we all may have our different preferences on a scale of introversion to extroversion, we are fundamentally a social species and thrive best with social contact, even if it’s just a few people.
- Air pollution reduction: avoiding pollutants, and filtering the air we breathe where pollutants are otherwise unavoidable, makes a measurable difference to brain health outcomes.
For more information on all of these (except the last two, which really he only mentions in passing), enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
How To Reduce Your Alzheimer’s Risk ← our own main feature on the topic
Take care!
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10almonds Tells The Tea…
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Let’s Bust Some Myths!
It’s too late after puberty, hormones won’t change xyz
While yes, many adult trans people dearly wish they’d been able to medically transition before going through the “wrong” puberty, the truth is that a lot of changes will still occur later… even to “unchangeable” things like the skeleton.
The body is remaking itself throughout life, and hormones tell it how to do that. Some parts are just quicker or slower than others. Also: the skeleton is pulled-on constantly by our muscles, and in a battle of muscle vs bone, muscle will always win over time.
Examples of this include:
- trans men building bigger bones to support their bigger muscles
- trans women getting smaller, with wider hips and a pelvic tilt
Trans people have sporting advantages
Assuming at least a year’s cross-sex hormonal treatment, there is no useful advantage to being trans when engaging in a sport. There are small advantages and disadvantages (which goes for any person’s body, really). For example:
- Trans women will tend to be taller than cis women on average…
- …but that larger frame is now being powered by smaller muscles, because they shrink much quicker than the skeleton.
- Trans men taking T are the only athletes allowed to take testosterone…
- …but they will still often be smaller than their fellow male competitors, for example.
Read: Do Trans Women Athletes Have Advantages? (A rather balanced expert overview, which does also cover trans men)
There’s a trans population explosion; it’s a social contagion epidemic!
Source for figures: The Overall Rate Of Left-Handedness (Researchgate)
Left-handed people used to make up around 3% of the population… Until the 1920s, when that figure jumped sharply upwards, before plateauing at around 12% in around 1960, where it’s stayed since. What happened?! Simple, schools stopped forcing children to use their right hand.
Today, people ask for trans healthcare because they know it exists! Decades ago, it wasn’t such common knowledge.
The same explanation can be applied to other “population explosions” such as for autism and ADHD.
Fun fact: Mt. Everest was “discovered” in 1852, but scientists suspect it probably existed long before then! People whose ancestors were living on it long before 1852 also agree. Sometimes something exists for a long time, and only comes to wider public awareness later.
Transgender healthcare is too readily available, especially to children!
To believe some press outlets, you’d think:
- HRT is available from school vending machines,
- kids can get a walk-in top surgery at recess,
- and there’s an after-school sterilization club.
In reality, while availability varies from place to place, trans healthcare is heavily gatekept. Even adults have trouble getting it, often having to wait years and/or pay large sums of money… and get permission from a flock of doctors, psychologists, and the like. For those under the age of 18, it’s almost impossible in many places, even with parental support.
Puberty-blockers shouldn’t be given to teenagers, as the effects are irreversible
Quick question: who do you think should be given puberty-blockers? For whom do you think they were developed? Not adults, for sure! They were not developed for trans teens either, but for cis pre-teens with precocious puberty, to keep puberty at bay, to do it correctly later. Nobody argues they’re unsafe for much younger cis children, and only object when it’s trans teens.
They’re not only safe and reversible, but also self-reversing. Stop taking them, and the normally scheduled puberty promptly ensues by itself. For trans kids, the desired effect is to buy the kid time to make an informed and well-considered decision. After all, the effects of the wrong puberty are really difficult to undo!
A lot of people rush medical transition and regret it!
Trans people wish it could be rushed! It’s a lot harder to get gender-affirming care as a trans person, than it is to get the same (or comparable) care as a cis person. Yes, cis people get gender-affirming care, from hormones to surgeries, and have done for a long time.
As for regret… Medical transition has around a 1% regret rate. For comparison, hip replacement has a 4.8% regret rate and knee replacement has a 17.1% regret rate.
A medical procedure with a 99% success rate would generally be considered a miracle cure!
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The Knowledge That Harvard Medical School’s Clinical Instructor Dr. Monique Tello Thinks Everyone SHOULD Have About Heart Health
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Anyone (who has not had a double mastectomy, anyway) can get breast cancer.
Breast cancer, if diagnosed early (before it spreads), has a 98% survival rate.
That survival rate drops to 31% if diagnosed after it has spread through the body.
(The US CDC’s breast cancer “stat bite” page has more stats and interactive graphs, so click here to see those charts and get the more detailed low-down on mortality/survival rates with various different situations)
We think that the difference between 98% and 31% survival rates is more than enough reason to give ourselves a monthly self-check at the very least! You’ve probably seen how-to diagrams before, but here are instructions for your convenience:
This graphic created by the Jordan Breast Cancer Program (check them out, as they have lots of resources)
If you don’t have the opportunity to take matters into your own hands right now, rather than just promise yourself “I’ll do that later”, take this free 4-minute Breast Health Assessment from Aurora Healthcare. Again, we think the difference early diagnosis can make to your survival chances make these tests well worth it.
Lest we forget, men can also get breast cancer (the CDC has a page for men too), especially if over 50. But how do you check for breast cancer, when you don’t have breasts in the commonly-understood sense of the word?
So take a moment to do this (yes, really actually do it!), and set a reminder in your calendar to repeat it monthly—there really is no reason not to! Take care of yourself; you’re important.
Pssst! Did you scroll past the diagrams, looking for the online 4-minute test promised by the subtitle? If so, scroll back up; the link is in the middle!
Harvard Medical School’s Clinical Instructor’s Five-Point Plan for Heart Health
Dr. Monique Tello, M.D., M.P.H., is a practicing physician at Massachusetts General Hospital, director of research and academic affairs for the MGH DGM Healthy Lifestyle Program, clinical instructor at Harvard Medical School, and author of the evidence-based lifestyle change guide Healthy Habits for Your Heart.
Here are what she says are the five most important factors to help keep your ticker ticking:
5. Have (at most) a moderate alcohol intake! While there are polyphenols such as resveratrol in red wine that could boost heart health, there’s so little per glass that you may need 100–1000 glasses to get the dosage that provides benefits in mouse studies. If you’re not a mouse, it may not be as beneficial, and Dr. Tello recommends drinking no more than one glass per day of any alcohol. What constitutes a glass? It varies from one kind of drink to another, so here’s a handy guide.
4. Don’t smoke. Best of all to never start. But if you did, quit. Simple as that. There is no healthy amount of smoking. While paradoxically, quitting smoking may of course be stressful to you, the long term gains are considered more than worth it. As with all advice, do consult your own physician for guidance, as individual circumstances may vary, and that may change the best approach for you.
3. Maintain a healthy body weight. While BMI (Body Mass Index) is not a perfect system, it’s a system in popular use, and Dr. Tello recommends keeping a BMI between 18.5 and 24.9.
What’s your BMI? It takes into account your height and weight; here’s a Quick BMI Calculator for your convenience.
2. Keep a healthy level of physical activity—which ideally means at least 30 minutes per day vigorous activity, but obviously if you’re not used to this, take it slowly and build up over time. Even just small lifestyle changes (walking where possible, taking the stairs instead of the elevator where possible, etc) can add up to a big difference.
1. Enjoy a healthy diet. This is the single most important thing, and the best modern scientific consensus holds that the best diet contains plenty of vegetables, fruits and nuts, whole grains, and omega-3 fatty acids, while it avoids processed meats, sugar-sweetened beverages, trans fats (what are trans fats?), and too much sodium.
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Heart Smarter for Women – by Dr. Jennifer Mieres
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Dr. Mieres takes us through understanding our own heart disease risks as individuals rather than as averages. As the title suggests, she does assume a female readership, so if you are a man and have no female loved ones, this might not be the book for you. But aside from that, she walks us through examining risk in the context of age, other health conditions, lifestyle factors, and so forth—including not turning a blind eye to factors that might intersect, such as for example if a physical condition reduces how much we can exercise, or if there’s some reason we can’t follow the usual gold standard of heart-healthy diet.
On which note, she does offer dietary advice, including information around recipes, meal-planning, and what things to always have in stock, as well as what things matter the most when it comes to what and how we eat.
It’s not all lifestyle medicine though; Dr. Mieres gives due attention to many of the medications available for heart health issues—and the pros and cons of these.
The style of the book is very simple and readable pop-science, without undue jargon, and with a generous glossary. As with many books of this genre, it does rely on (presumably apocryphal) anecdotes, though an interesting choice for this book is that it keeps a standing cast of four recurring characters, each to represent a set of circumstances and illustrate how certain things can go differently for different people, with different things then being needed and/or possible. Hopefully, any given reader will find themself represented at least moderately well somewhere in or between these four characters.
Bottom line: this is a very informative and accessible book, that demystifies a lot of common confusions around heart health.
Click here to check out Heart Smarter For Women, and take control of your health!
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The Comfort Book – by Matt Haig
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This book “is what it says on the tin”. Matt Haig, bestselling author of “Reasons to Stay Alive” (amongst other works) is here with “a hug in a book”.
The format of the book is an “open it at any page and you’ll find something of value” book. Its small chapters are sometimes a few pages long, but often just a page. Sometimes just a line. Always deep.
All of us, who live long enough, will ponder our mortality sometimes. The feelings we may have might vary on a range from “afraid of dying” to “despairing of living”… but Haig’s single biggest message is that life is full of wonder; each moment precious.
- That hope is an incredible (and renewable!) resource.
- That we are more than a bad week, or month, or year, or decade.
- That when things are taken from us, the things that remain have more value.
Bottom line: you might cry (this reviewer did!), but it’ll make your life the richer for it, and remind you—if ever you need it—the value of your amazing life.
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