Survival of the Prettiest – by Dr. Nancy Etcoff
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Beauty is in the eye of the beholder, right? And what does it matter, in this modern world, especially if we are already in a happy stable partnership?
The science of it, as it turns out, is less poetic. Not only is evolutionary psychology still the foundation of our perception of human beauty (yes, even if we have zero possibility of further procreation personally), but also, its effects are far, far wider than partner selection.
From how nice people are to you, to how much they trust you, to how easily they will forgive a (real or perceived) misdeed, to what kind of medical care you get (or don’t), your looks shape your experiences.
In this very easy-reading work that nevertheless contains very many references, Dr. Etcoff explores the science of beauty. Not just what traits are attractive and why, but also, what they will do for (or against) us—in concrete terms, with numbers.
Bottom line: if you’d like to better understand the subconscious biases held by yourself and others, this book is a top-tier primer.
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Are plant-based burgers really bad for your heart? Here’s what’s behind the scary headlines
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We’re hearing a lot about ultra-processed foods and the health effects of eating too many. And we know plant-based foods are popular for health or other reasons.
So it’s not surprising new research out this week including the health effects of ultra-processed, plant-based foods is going to attract global attention.
And the headlines can be scary if that research and the publicity surrounding it suggests eating these foods increases your risk of heart disease, stroke or dying early.
Here’s how some media outlets interpreted the research. The Daily Mail ran with:
Vegan fake meats are linked to increase in heart deaths, study suggests: Experts say plant-based diets can boost health – but NOT if they are ultra-processed
The New York Post’s headline was:
Vegan fake meats linked to heart disease, early death: study
But when we look at the study itself, it seems the media coverage has focused on a tiny aspect of the research, and is misleading.
So does eating supermarket plant-based burgers and other plant-based, ultra-processed foods really put you at greater risk of heart disease, stroke and premature death?
Here’s what prompted the research and what the study actually found.
Nina Firsova/Shutterstock Remind me, what are ultra-processed foods?
Ultra-processed foods undergo processing and reformulation with additives to enhance flavour, shelf-life and appeal. These include everything from packet macaroni cheese and pork sausages, to supermarket pastries and plant-based mince.
There is now strong and extensive evidence showing ultra-processed foods are linked with an increased risk of many physical and mental chronic health conditions.
Although researchers question which foods should be counted as ultra-processed, or if all of them are linked to poorer health, the consensus is that, generally, we should be eating less of them.
We also know plant-based diets are popular. These are linked with a reduced risk of chronic health conditions such as heart disease and stroke, cancer and diabetes. And supermarkets are stocking more plant-based, ultra-processed food options.
How about the new study?
The study looked for any health differences between eating plant-based, ultra-processed foods compared to eating non-plant based, ultra-processed foods. The researchers focused on the risk of cardiovascular disease (such as heart disease and stroke) and deaths from it.
Plant-based, ultra-processed foods in this study included mass-produced packaged bread, pastries, buns, cakes, biscuits, cereals and meat alternatives (fake meats). Ultra-processed foods that were not plant-based included milk-based drinks and desserts, sausages, nuggets and other reconstituted meat products.
The researchers used data from the UK Biobank. This is a large biomedical database that contains de-identified genetic, lifestyle (diet and exercise) and health information and biological samples from half a million UK participants. This databank allows researchers to determine links between this data and a wide range of diseases, including heart disease and stroke.
They used data from nearly 127,000 people who provided details of their diet between 2009 and 2012. The researchers linked this to their hospital records and death records. On average, the researchers followed each participant’s diet and health for nine years.
Plant-based, ultra-processed foods included in this study included packaged supermarket bread. doublelee/Shutterstock What did the study find?
With every 10% increase of total energy from plant-sourced, ultra-processed foods there was an associated 5% increased risk of cardiovascular disease (such as heart disease or stroke) and a 12% higher risk of dying from cardiovascular disease.
But for every 10% increase in plant-sourced, non-ultra-processed foods consumed there was an associated 7% lower risk of cardiovascular disease and a 13% lower risk of dying from cardiovascular disease.
The researchers found no evidence for an association between all plant-sourced foods (whether or not they were ultra-processed) and either an increased or decreased risk of cardiovascular disease or dying from it.
This was an observational study, where people recalled their diet using questionnaires. When coupled with other data, this can only tell us if someone’s diet is associated with a particular risk of a health outcome. So we cannot say that, in this case, the ultra-processed foods caused the heart disease and deaths from it.
Why has media coverage focused on fake meats?
Much of the media coverage has focused on the apparent health risks associated with eating fake meats, such as sausages, burgers, nuggets and even steaks.
These are considered ultra-processed foods. They are made by deconstructing whole plant foods such as pea, soy, wheat protein, nuts and mushrooms, and extracting the protein. They are then reformulated with additives to make the products look, taste and feel like traditional red and white meats.
However this was only one type of plant-based, ultra-processed food analysed in this study. This only accounted for an average 0.2% of the dietary energy intake of all the participants.
Compare this to bread, pastries, buns, cakes and biscuits, which are other types of plant-based, ultra-processed foods. These accounted for 20.7% of total energy intake in the study.
This image was at the top of the media release. Screenshot/Imperial It’s hard to say why the media focused on fake meat. But there is one clue in the media release issued to promote the research.
Although the media release did not mention the words “fake meat”, an image of plant-based burgers, sausages and meat balls or rissoles featured prominently.
The introduction of the study itself also mentions plant-sourced, ultra-processed foods, such as sausages, nuggets and burgers.
So it’s no wonder people can be confused.
Does this mean fake meats are fine?
Not necessarily. This study analysed the total intake of plant-based, ultra-processed foods, which included fake meats, albeit a very small proportion of people’s diets.
From this study alone we cannot tell if there would be a different outcome if someone ate large amounts of fake meats.
In fact, a recent review of fake meats found there was not enough evidence to determine their impact on health.
We also need more recent data to reflect current eating patterns of fake meats. This study used dietary data collected from 2009 to 2012, and fake meats have become more popular since.
What if I really like fake meat?
We have known for a while that ultra-processed foods can harm our health. This study tells us that regardless if an ultra-processed food is plant-based or not, it may still be harmful.
We know fake meat can contain large amounts of saturated fats (from coconut or palm oil), salt and sugar.
So like other ultra-processed foods, they should be eaten infrequently. The Australian Dietary Guidelines currently recommends people should only consume foods like this sometimes and in small amounts.
Are some fake meats healthier than others?
Check the labels and nutrition information panels. Look for those lowest in fat and salt. Burgers and sausages that are a “pressed cake” of minced ingredients such as nuts, beans and vegetables will be preferable to reformulated products that look identical to meat.
You can also eat whole plant-based protein foods such as legumes. These include beans, lentils, chickpeas and soy beans. As well as being high in protein and fibre, they also provide essential nutrients such as iron and zinc. Using spices and mushrooms alongside these in your recipes can replicate some of the umami taste associated with meat.
Evangeline Mantzioris, Program Director of Nutrition and Food Sciences, Accredited Practising Dietitian, University of South Australia
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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The Brain As A Work-In-Progress
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And The Brain Goes Marching On!
In Tuesday’s newsletter, we asked you “when does the human brain stop developing?” and got the above-depicted, below-described, set of responses:
- About 64% of people said “Never”
- About 16% of people said “25 years”
- About 9% of people said “65 years”
- About 5% of people said “13 years”
- About 3% of people said “18 years”
- About 3% of people said “45 years”
Some thoughts, before we get into the science:
An alternative wording for the original question was “when does the human brain finish developing”; the meaning is the same but the feeling is slightly different:
- “When does the human brain stop developing?” focuses attention on the idea of cessation, and will skew responses to later ages
- When does the human brain finish developing?” focuses on attention on a kind of “is it done yet?” and will skew responses to earlier ages
Ultimately, since we had to chose one word or another, we picked the shortest one, but it would have been interesting if we could have done an A/B test, and asked half one way, and half the other way!
Why we picked those ages
We picked those ages as poll options for reasons people might be drawn to them:
- 13 years: in English-speaking cultures, an important milestone of entering adolescence (note that the concept of a “teenager” is not precisely universal as most languages do not have “-teen” numbers in the same way; the concept of “adolescent” may thus be tied to other milestones)
- 18 years: age of legal majority in N. America and many other places
- 25 years: age popularly believed to be when the brain is finished developing, due to a study that we’ll talk about shortly (we guess that’s why there’s a spike in our results for this, too!)
- 45 years: age where many midlife hormonal changes occur, and many professionals are considered to have peaked in competence and start looking towards retirement
- 65 years: age considered “senior” in much of N. America and many other places, as well as the cut-off and/or starting point for a lot of medical research
Notice, therefore, how a lot of things are coming from places they really shouldn’t. For example, because there are many studies saying “n% of people over 65 get Alzheimer’s” or “n% of people over 65 get age-related cognitive decline”, etc, 65 becomes the age where we start expecting this—because of an arbitrary human choice of where to draw the cut-off for the study enrollment!
Similarly, we may look at common ages of legal majority, or retirement pensions, and assume “well it must be for a good reason”, and dear reader, those reasons are more often economically motivated than they are biologically reasoned.
So, what does the science say?
Our brains are never finished developing: True or False?
True! If we define “finished developing” as “we cease doing neurogenesis and neuroplasticity is no longer in effect”.
Glossary:
- Neurogenesis: the process of creating new brain cells
- Neuroplasticity: the process of the brain adapting to changes by essentially rebuilding itself to suit our perceived current needs
We say “perceived” because sometimes neuroplasticity can do very unhelpful things to us (e.g: psychological trauma, or even just bad habits), but on a biological level, it is always doing its best to serve our overall success as an organism.
For a long time it was thought that we don’t do neurogenesis at all as adults, but this was found to be untrue:
How To Grow New Brain Cells (At Any Age)
Summary of conclusions of the above: we’re all growing new brain cells at every age, even if we be in our 80s and with Alzheimer’s disease, but there are things we can do to enhance our neurogenic potential along the way.
Neuroplasticity will always be somewhat enhanced by neurogenesis (after all, new neurons get given jobs to do), and we reviewed a great book about the marvels of neuroplasticity including in older age:
Our brains are still developing up to the age of 25: True or False?
True! And then it keeps on developing after that, too. Now this is abundantly obvious considering what we just talked about, but see what a difference the phrasing makes? Now it makes it sound like it stops at 25, which this statement doesn’t claim at all—it only speaks for the time up to that age.
A lot of the popular press about “the brain isn’t fully mature until the age of 25” stems from a 2006 study that found:
❝For instance, frontal gray matter volume peaks at about age 11.0 years in girls and 12.1 years in boys, whereas temporal gray matter volume peaks at about age at 16.7 years in girls and 16.2 years in boys. The dorsal lateral prefrontal cortex, important for controlling impulses, is among the latest brain regions to mature without reaching adult dimensions until the early 20s.❞
Source: Structural Magnetic Resonance Imaging of the Adolescent Brain
There are several things to note here:
- The above statement is talking about the physical size of the brain growing
- Nowhere does he say “and stops developing at 25”
However… The study only looked at brains up to the age of 25. After that, they stopped looking, because the study was about “the adolescent brain” so there has to be a cut-off somewhere, and that was the cut-off they chose.
This is the equivalent of saying “it didn’t stop raining until four o’clock” when the reality is that four o’clock is simply when you gave up on checking.
The study didn’t misrepresent this, by the way, but the popular press did!
Another 2012 study looked at various metrics of brain development, and found:
- Synapse overproduction into the teens
- Cortex pruning into the late 20s
- Prefrontal pruning into middle age at least (they stopped looking)
- Myelination beyond middle age (they stopped looking)
Source: Experience and the developing prefrontal cortex ← check out figure 1, and make sure you’re looking at the human data not the rat data
So how’s the most recent research looking?
Here’s a 2022 study that looked at 123,984 brain scans spanning the age range from mid-gestation to 100 postnatal years, and as you can see from its own figure 1… Most (if not all) brain-things keep growing for life, even though most slow down at some point, they don’t stop:
Brain charts for the human lifespan ← check out figure 1; don’t get too excited about the ventricular volume column as that is basically “brain that isn’t being a brain”. Do get excited about the rest, though!
Want to know how not to get caught out by science being misrepresented by the popular press? Check out:
How Science News Outlets Can Lie To You (Yes, Even If They Cite Studies!)
Take care!
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12 Questions For Better Brain Health
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We usually preface our “Expert Insights” pieces with a nice banner that has a stylish tall cutout that allows us to put a photo of the expert in. Today we’re not doing that, because for today’s camera-shy expert, we could only find one photo, and it’s a small, grainy, square headshot that looks like it was taken some decades ago, and would not fit our template at all. You can see it here, though!
In any case, Dr. Linda Selwa is a neurologist and neurophysiologist with nearly 40 years of professional experience.
The right questions to ask
As a neurologist, she found that one of the problems that results in delayed interventions (and thus, lower efficacy of those interventions) is that people don’t know there’s anything to worry about until a degenerative brain condition has degenerated past a certain point. With that in mind, she bids us ask ourselves the following questions, and discuss them with our primary healthcare providers as appropriate:
- Sleep: Are you able to get sufficient sleep to feel rested?
- Affect, mood and mental health: Do you have concerns about your mood, anxiety, or stress?
- Food, diet and supplements: Do you have concerns about getting enough or healthy enough food, or have any questions about supplements or vitamins?
- Exercise: Do you find ways to fit physical exercise into your life?
- Supportive social interactions: Do you have regular contact with close friends or family, and do you have enough support from people?
- Trauma avoidance: Do you wear seatbelts and helmets, and use car seats for children?
- Blood pressure: Have you had problems with high blood pressure at home or at doctor visits, or do you have any concerns about blood pressure treatment or getting a blood pressure cuff at home?
- Risks, genetic and metabolic factors: Do you have trouble controlling blood sugar or cholesterol? Is there a neurological disease that runs in your family?
- Affordability and adherence: Do you have any trouble with the cost of your medicines?
- Infection: Are you up to date on vaccines, and do you have enough information about those vaccines?
- Negative exposures: Do you smoke, drink more than one to two drinks per day, or use non-prescription drugs? Do you drink well water, or live in an area with known air or water pollution?
- Social and structural determinants of health: Do you have concerns about keeping housing, having transportation, having access to care and medical insurance, or being physically or emotionally safe from harm?
You will note that some of these are well-known (to 10almonds readers, at least!) risk factors for cognitive decline, but others are more about systemic and/or environmental considerations, things that don’t directly pertain to brain health, but can have a big impact on it anyway.
About “concerns”: in the case of those questions that ask “do you have concerns about…?”, and you’re not sure, then yes, you do indeed have concerns.
About “trouble”: as for these kinds of health-related questionnaires in general, if a question asks you “do you have trouble with…?” and your answer is something like “no, because I have a special way of dealing with that problem” then the answer for the purposes of the questionnaire is yes, you do indeed have trouble.
Note that you can “have trouble with” something that you simultaneously “have under control”—just as a person can have no trouble at all with something that they leave very much out of control.
Further explanation on each of the questions
If you’re wondering what is meant by any of these, or what counts, or why the question is even being asked, then we recommend you check out Dr. Selwa et al’s recently-published paper, then all is explained in there, in surprisingly easy-to-read fashion:
Emerging Issues In Neurology: The Neurologist’s Role in Promoting Brain Health
If you scroll past the abstract, introduction, and disclaimers, then you’ll be straight into the tables of information about the above 12 factors.
Want to be even more proactive?
Check out:
How To Reduce Your Alzheimer’s Risk
Take care!
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10% Human – by Dr. Alanna Collen
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The title, of course, is a nod to how by cell count, we are only about 10% human, and the other 90% are assorted microbes.
Dr. Collen starts with the premise that “all diseases begin in the gut” which is perhaps a little bold, but as a general rule of thumb, the gut is, in fairness, implicated in most things—even if not being the cause, it generally plays at least some role in the pathogenesis of disease.
The book talks us through the various ways that our trillions of tiny friends (and some foes) interact with us, from immune-related considerations, to nutrient metabolism, to neurotransmitters, and in some cases, direct mind control, which may sound like a stretch but it has to do with the vagus nerve “gut-brain highway”, and how microbes have evolved to tug on its strings just right. Bearing in mind, most of these microbes have very short life cycles, which means evolution happens for them so much more rapidly than it does for us—something that Dr. Collen, with her PhD in evolutionary biology, has plenty to say about.
There is a practical element too: advice on how to avoid the many illnesses that come with having our various microbiomes (it’s not just the gut!) out of balance, and how to keep everything working together as a team.
The style is quite light pop-science and, once we get past the first chapter (which is about the history of the field), quite a pleasant read as Dr. Collen has an enjoyable and entertaining tone.
Bottom line: if you’d like to understand more about all the things that come together to make us functionally 100% human, then this book is an excellent guide to that.
Click here to check out 10% Human, and learn about how we interact with ourselves!
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7-Minute Face Fitness For Lymphatic Drainage & Youthful Jawline
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Valeriia Veksler is a registered nurse with a background in cosmetic medicine. She’s been practicing for 7 years, and on the strength of that, is going to teach us how to give our face some love for 7 minutes:
The routine, step by step
Preparation: clean your face and apply your usual moisturizer. Breathe deeply: Inhale through the nose, exhale to release tension.
Neck massage: use fingertips in circular motion from the bottom of the neck to the hairline and back for 30 seconds. This helps promote blood flow to the face.
Sternocleidomastoid massage: use knuckles to massage in circles from the sternal area up to the jawline and down to the collarbone for 30 seconds. Keep posture straight, shoulders down, and relax muscles.
Collarbone pressure: apply and release pressure with fingertips above the collarbones for 30 seconds. This stimulates lymphatic flow and helps reduce puffiness.
Under-chin massage: use knuckles to massage side-to-side under the chin for 30 seconds. Relax the under-chin area and promote lymphatic drainage.
Jawline massage: with knuckles, massage from the chin towards the ears in circular motion for 30 seconds. Relax the jaw.
Nasolabial fold and nose massage: place index fingers near nostrils and move mouth in a “O” shape, then massage around the nostrils and up the nose for 30 seconds.
Smile line lift: press palms on the smile lines and slide hands up towards the temples for 30 seconds. This helps lift the face and sculpt cheekbones.
Under-eye massage: use index fingers in a hook shape, massaging under the eyes along the bone structure for 30 seconds. This promotes blood flow and lymphatic drainage.
Temple lift: use fingertips to lift the area near the left temple for 30 seconds, then assist with the opposite hand to lift further. Repeat on the other side. This reduces crow’s feet and lifts the corners of the eyes.
Forehead lift: place hands on the forehead, lock fingers, and gently elevate the skin upwards. Glide fingers towards the hairline for 30 seconds. This promotes blood flow and smooths the forehead.
Relax 11 Lines: place fingers at the center of the forehead, gently press into the tissue, and let them glide away from each other towards the eyebrows for 30 seconds.
Bonus:
- Ensure good posture throughout.
- Relax, stay mindful, and breathe deeply during the exercises.
- Feel the warmth and energy from improved circulation, after the routine.
For more on all of this plus a visual demonstration of everything, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
Top 10 Foods That Promote Lymphatic Drainage and Lymph Flow
Take care!
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Calm Your Inflammation – by Dr. Brenda Tidwell
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The book starts with an overview of inflammation, both acute and chronic, before diving into how to reduce the latter kind (acute inflammation being usually necessary and helpful, usually fighting disease rather than creating it).
The advice in the book is not just dietary, and covers lifestyle interventions too, including exercise etc—and how to strike the right balance, since the wrong kind of exercise or too much of it can sabotage our efforts. Similarly, Dr. Tidwell doesn’t just say such things as “manage stress” but also provides 10 ways of doing so, and so forth for other vectors of inflammation-control. She does cover dietary things as well though, including supplements where applicable, and the role of gut health, sleep, and other factors.
The style of the book is quite entry-level pop-science, designed to be readable and comprehensible to all, without unduly dumbing-down. In terms of hard science or jargon, there are 6 pages of bibliography and 3 pages of glossary, so it’s neither devoid of such nor overwhelmed by it.
Bottom line: if fighting inflammation is a priority for you, then this book is an excellent primer.
Click here to check out Calm Your Inflammation, and indeed calm your inflammation!
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