Burn – by Dr. Herman Pontzer
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We all have reasons to want to focus on our metabolism. Speed it up to burn more fat; slow it down to live longer. Tweak it for more energy in the day. But what actually is it, and how does it work?
Dr. Herman Pontzer presents a very useful overview of not just what our metabolism is and how it works, but also why.
The style of the book is casual, but doesn’t skimp on the science. Whether we are getting campfire stories of Hadza hunter-gatherers, or an explanation of the use of hydrogen isotopes in metabolic research, Dr. Pontzer keeps things easy-reading.
One of the main premises of the book is that our caloric expenditure is not easy to change—if we exercise more, our bodies will cut back somewhere else. After all, the body uses energy for a lot more than just moving. With this in mind, Dr. Pontzer makes the science-based case for focusing more on diet than exercise if weight management is our goal.
In short, if you’d like your metabolism to be a lot less mysterious, this book can help render a lot of science a lot more comprehensible!
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Cognitive Enhancement Without Drugs
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Cognitive Enhancement Without Drugs
This is Elizabeth Ricker. She’s a Harvard-and-MIT-trained neuroscientist and researcher, who now runs the “Citizen Science” DIY-neurohacking organization, NeuroEducate.
Sounds fun! What’s it about?
The philosophy that spurs on her research and practice can be summed up as follows:
❝I’m not going to leave my brain up to my doctor or [anyone else]… My brain is my own responsibility, and I’m going to do the best that I can to optimize it❞
Her goal is not just to optimize her own brain though; she wants to make the science accessible to everyone.
What’s this about Citizen Science?
“Citizen Science” is the idea that while there’s definitely an important role in society for career academics, science itself should be accessible to all. And, not just the conclusions, but the process too.
This can take the form of huge experiments, often facilitated these days by apps where we opt-in to allow our health metrics (for example) to be collated with many thousands of others, for science. It can also involve such things as we talked about recently, getting our own raw genetic data and “running the numbers” at home to get far more comprehensive and direct information than the genetic testing company would ever provide us.
For Ricker, her focus is on the neuroscience side of biohacking, thus, neurohacking.
I’m ready to hack my brain! Do I need a drill?
Happily not! Although… Bone drills for the skull are very convenient instruments that make it quite hard to go wrong even with minimal training. The drill bit has a little step/ledge partway down, which means you can only drill through the thickness of the skull itself, before the bone meeting the wider part of the bit stops you from accidentally drilling into the brain. Still, please don’t do this at home.
What you can do at home is a different kind of self-experimentation…
If you want to consider which things are genuinely resulting in cognitive enhancement and which things are not, you need to approach the matter like a scientist. That means going about it in an organized fashion, and recording results.
There are several ways cognitive enhancement can be measured, including:
- Learning and memory
- Executive function
- Emotional regulation
- Creative intelligence
Let’s look at each of them, and what can be done. We don’t have a lot of room here; we’re a newsletter not a book, but we’ll cover one of Ricker’s approaches for each:
Learning and memory
This one’s easy. We’re going to leverage neuroplasticity (neurons that fire together, wire together!) by simple practice, and introduce an extra element to go alongside your recall. Perhaps a scent, or a certain item of clothing. Tell yourself that clinical studies have shown that this will boost your recall. It’s true, but that’s not what’s important; what’s important is that you believe it, and bring the placebo effect to bear on your endeavors.
You can test your memory with word lists, generated randomly by AI, such as this one:
You’ll soon find your memory improving—but don’t take our word for it!
Executive function
Executive function is the aspect of your brain that tells the other parts how to work, when to work, and when to stop working. If you’ve ever spent 30 minutes thinking “I need to get up” but you were stuck in scrolling social media, that was executive dysfunction.
This can be trained using the Stroop Color and Word Test, which shows you words, specifically the names of colors, which will themselves be colored, but not necessarily in the color the word pertains to. So for example, you might be shown the word “red”, colored green. Your task is to declare either the color of the word only, ignoring the word itself, or the meaning of the word only, ignoring its appearance. It can be quite challenging, but you’ll get better quite quickly:
The Stroop Test: Online Version
Emotional Regulation
This is the ability to not blow up angrily at the person with whom you need to be diplomatic, or to refrain from laughing when you thought of something funny in a sombre situation.
It’s an important part of cognitive function, and success or failure can have quite far-reaching consequences in life. And, it can be trained too.
There’s no online widget for this one, but: when and if you’re in a position to safely* do so, think about something that normally triggers a strong unwanted emotional reaction. It doesn’t have to be something life-shattering, but just something that you feel in some way bad about. Hold this in your mind, sit with it, and practice mindfulness. The idea is to be able to hold the unpleasant idea in your mind, without becoming reactive to it, or escaping to more pleasant distractions. Build this up.
*if you perchance have PTSD, C-PTSD, or an emotional regulation disorder, you might want to talk this one through with a qualified professional first.
Creative Intelligence
Another important cognitive skill, and again, one that can be cultivated and grown.
The trick here is volume. A good, repeatable test is to think of a common object (e.g. a rock, a towel, a banana) and, within a time constraint (such as 15 minutes) list how many uses you can think of for that item.
Writer’s storytime: once upon a time, I was sorting through an inventory of medical equipment with a colleague, and suggested throwing out our old arterial clamps, as we had newer, better ones—in abundance. My colleague didn’t want to part with them, so I challenged him “Give me one use for these, something we could in some possible world use them for that the new clamps don’t do better, and we’ll keep them”. He said “Thumbscrews”, and I threw my hands up in defeat, saying “Fine!”, as he had technically fulfilled my condition.
What’s the hack to improve this one? Just more volume. Creativity, as it turns out, isn’t something we can expend—like a muscle, it grows the more we use it. And because the above test is repeatable (with different objects), you can track your progress.
And if you feel like using your grown creative muscle to write/paint/compose/etc your magnum opus, great! Or if you just want to apply it to the problem-solving of everyday life, also great!
In summary…
Our brain is a wonderful organ with many functions. Society expects us to lose these as we get older, but the simple, scientific truth is that we can not only maintain our cognitive function, but also enhance and grow it as we go.
Want to know more from today’s featured expert?
You might enjoy her book, “Smarter Tomorrow”, which we reviewed back in March
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The Mindgym: Wake Your Mind Up – by Dr. Sebastian Bailey and Octavius Black
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Since this reviewer got her copy, the subtitle and marketing of the book have changed, but the content has not. It’s now being marketed as “achieve more by thinking differently” like a pop-psychology business book. But it’s not that. What, then, is it?
It’s 20 chapters of exercises for different kinds of thinking. And yes, the exercises will help those hungry 25–35-year-old MBAs too, but it’s more of a complete how-to-think overhaul.
Its exercises cover psychology and philosophy, creativity and communication, logic and relaxation, cognition and motivation, and lots more.
The style of the book is that of a workbook, and as such, it’s very clearly laid-out; one can go through them methodically, or get an overview and then dive in to whatever one wants/needs most at the moment.
Bottom line: if you’d like a book that’s a one-stop shop for honing many different kinds of thinking, this is the book for you.
Click here to check out The Mindgym, and get training yours!
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What’s the difference between ADD and ADHD?
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Around one in 20 people has attention-deficit hyperactivity disorder (ADHD). It’s one of the most common neurodevelopmental disorders in childhood and often continues into adulthood.
ADHD is diagnosed when people experience problems with inattention and/or hyperactivity and impulsivity that negatively impacts them at school or work, in social settings and at home.
Some people call the condition attention-deficit disorder, or ADD. So what’s the difference?
In short, what was previously called ADD is now known as ADHD. So how did we get here?
Let’s start with some history
The first clinical description of children with inattention, hyperactivity and impulsivity was in 1902. British paediatrician Professor George Still presented a series of lectures about his observations of 43 children who were defiant, aggressive, undisciplined and extremely emotional or passionate.
Since then, our understanding of the condition evolved and made its way into the Diagnostic and Statistical Manual of Mental Disorders, known as the DSM. Clinicians use the DSM to diagnose mental health and neurodevelopmental conditions.
The first DSM, published in 1952, did not include a specific related child or adolescent category. But the second edition, published in 1968, included a section on behaviour disorders in young people. It referred to ADHD-type characteristics as “hyperkinetic reaction of childhood or adolescence”. This described the excessive, involuntary movement of children with the disorder.
It took a while for ADHD-type behaviour to make in into the diagnostic manual. Elzbieta Sekowska/Shutterstock In the early 1980s, the third DSM added a condition it called “attention deficit disorder”, listing two types: attention deficit disorder with hyperactivity (ADDH) and attention deficit disorder as the subtype without the hyperactivity.
However, seven years later, a revised DSM (DSM-III-R) replaced ADD (and its two sub-types) with ADHD and three sub-types we have today:
- predominantly inattentive
- predominantly hyperactive-impulsive
- combined.
Why change ADD to ADHD?
ADHD replaced ADD in the DSM-III-R in 1987 for a number of reasons.
First was the controversy and debate over the presence or absence of hyperactivity: the “H” in ADHD. When ADD was initially named, little research had been done to determine the similarities and differences between the two sub-types.
The next issue was around the term “attention-deficit” and whether these deficits were similar or different across both sub-types. Questions also arose about the extent of these differences: if these sub-types were so different, were they actually different conditions?
Meanwhile, a new focus on inattention (an “attention deficit”) recognised that children with inattentive behaviours may not necessarily be disruptive and challenging but are more likely to be forgetful and daydreamers.
People with inattentive behaviours may be more forgetful or daydreamers. fizkes/Shutterstock Why do some people use the term ADD?
There was a surge of diagnoses in the 1980s. So it’s understandable that some people still hold onto the term ADD.
Some may identify as having ADD because out of habit, because this is what they were originally diagnosed with or because they don’t have hyperactivity/impulsivity traits.
Others who don’t have ADHD may use the term they came across in the 80s or 90s, not knowing the terminology has changed.
How is ADHD currently diagnosed?
The three sub-types of ADHD, outlined in the DSM-5 are:
- predominantly inattentive. People with the inattentive sub-type have difficulty sustaining concentration, are easily distracted and forgetful, lose things frequently, and are unable to follow detailed instructions
- predominantly hyperactive-impulsive. Those with this sub-type find it hard to be still, need to move constantly in structured situations, frequently interrupt others, talk non-stop and struggle with self control
- combined. Those with the combined sub-type experience the characteristics of those who are inattentive and hyperactive-impulsive.
ADHD diagnoses continue to rise among children and adults. And while ADHD was commonly diagnosed in boys, more recently we have seen growing numbers of girls and women seeking diagnoses.
However, some international experts contest the expanded definition of ADHD, driven by clinical practice in the United States. They argue the challenges of unwanted behaviours and educational outcomes for young people with the condition are uniquely shaped by each country’s cultural, political and local factors.
Regardless of the name change to reflect what we know about the condition, ADHD continues to impact educational, social and life situations of many children, adolescents and adults.
Kathy Gibbs, Program Director for the Bachelor of Education, Griffith University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Creamy Fortifying Cauliflower Soup
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As delicious as it is super-easy to make, this one is full of protein, fiber, healthy fats, and some of the most health-giving spices around.
You will need
- 1 quart low-sodium vegetable stock
- 1 large cauliflower, cut into florets
- 1 large onion, finely chopped
- 2 cans cannellini (or other white) beans, drained and rinsed
- 1 cup raw cashews, soaked in hot water for at least 5 minutes, and drained (if allergic, substitute chickpeas)
- 1 bulb (yes, a whole bulb) garlic, roughly chopped
- 5 tbsp nutritional yeast
- 10 fresh sprigs of thyme (keep them whole!)
- 1 large fresh sprig of rosemary (keep this whole too!)
- zest of 1 lemon
- 1 tbsp red chili flakes
- 1 tbsp black pepper, coarse ground
- 1 tsp MSG or 2 tsp low-sodium salt
- ½ tsp ground turmeric
- Extra virgin olive oil
Method
(we suggest you read everything at least once before doing anything)
1) Tightly tie up the sprigs of rosemary and thyme with kitchen twine (shining a bright light on it and asking it invasive questions is optional)
2) Heat some olive oil to a medium heat in your biggest sauté pan or similar. Add the onions, and cook for about 10 minutes, stirring as necessary. We are not trying to outright caramelize them here, but we do want them browned a little.
3) Add the garlic and cook for another 2 minutes, stirring frequently.
4) Add the vegetable stock, and stir, ensuring no onion is stuck to the base of the pan. Add the cauliflower, cashews, beans, nooch, pepper, turmeric, and MSG/salt, stirring to combine. Don’t worry if the cauliflower isn’t all submerged; it’ll be fine in a little while.
5) Add the herbs, submerging them in the soup (still tied up bouquet garni style).
6) Bring to a boil, reduce to a simmer and cook for 15–20 minutes; the cauliflower will be soft when it’s ready.
7) Remove the bouquet garni, and blend the soup until thick and creamy. You can do this with an immersion blender, but to get the smoothest soup, you’ll need to use a stand blender. Either ensure yours is safe for hot liquids, or else allow to cool, blend, and reheat later. This is important, as otherwise your blender could explode.
8) Serve, using the lemon zest and chili for the garnish:
Enjoy!
Want to learn more?
For those interested in some of the science of what we have going on today:
- Some Surprising Truths About Hunger And Satiety
- Level-Up Your Fiber Intake! (Without Difficulty Or Discomfort)
- Our Top 5 Spices: How Much Is Enough For Benefits?
Take care!
Don’t Forget…
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How Metformin Slows Aging
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Metformin And How It Slows Down Aging
That’s a bold claim for a title, but the scientific consensus is clear, and this Research Review Monday we’re going to take a look at exactly that!
Metformin is a common diabetes-management drug, used to lower blood sugar levels in people who either don’t have enough insulin or the insulin isn’t being recognized well enough by the body.
However, it also slows aging, which is a quality it’s also been studied for for more than a decade. We’ll look at some of the more recent research, though. Let’s kick off with an initial broad statement, from the paper “The Use of Metformin to Increase the Human Healthspan”, as part of the “Advances in Experimental Medicine and Biology” series:
In recent years, more attention has been paid to the possibility of using metformin as an anti-aging drug. It was shown to significantly increase the lifespan in some model organisms and delay the onset of age-associated declines. Growing amounts of evidence from clinical trials suggest that metformin can effectively reduce the risk of many age-related diseases and conditions, including cardiometabolic disorders, neurodegeneration, chronic inflammation and frailty.
How does it work?
That’s still being studied, but the scientific consensus is that it works by inducing hormesis—the process by which minor stress signals cells to start repairing themselves. How does it induce that hormesis? Again, still being studied, but it appears to do it by activating a specific enzyme; namely, the AMP-activated protein kinase:
Read: Metformin-enhances resilience via hormesis
It also has been found to slow aging by means of an anti-inflammatory effect, as a bonus!
Any bad news?
Well, firstly, in most places it’s only prescribed for diabetes management, not for healthy life extension. A lot of anti-aging enthusiasts have turned to the grey market online to get it, and we can’t recommend that.
Secondly, it does have some limitations:
- Its bioavailability isn’t great in tablet form (the form in which it is most commonly given)
- It has quite a short elimination half-life (around 6 hours), which makes it great to fix transient hyperglycemia in diabetics—job done and it’s out—but presents a logistical challenge when it comes to something so pernicious as aging.
- Some people are non-responders (a non-responder, in medicine, is someone for whom a drug simply doesn’t work, for no obvious reason)
Want to know more? Check out:
Metformin in aging and aging-related diseases: clinical applications and relevant mechanism
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How To Survive A Heart Attack When You’re Alone
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Dr. Alan Mandel emphasizes the importance of staying calm and following these steps to improve survival chances:
Simple is best
Here’s how you will survive a heart attack alone: briefly.
So, you will need to get help as quickly as possible. 90% of people who make it to a hospital alive, go on to survive their heart attack, so that’s your top priority.
Call emergency services as soon as you suspect you are having a heart attack. Stay on the line, and stay calm.
While having a heart attack is not an experience that’s very conducive to relaxation, heightened emotions will exacerbate things, so focus on breathing calmly. One of the commonly reported symptoms of heart attack that doesn’t often make it to official lists is “a strong sense of impending doom”, and that is actually helpful as it helps separate it from “is this indigestion?” or such, but once you have acknowledged “yes, this is probably a heart attack”, you need to put those feelings aside for later.
If you have aspirin available, Dr. Mandel says that the time to take it is once you have called an ambulance. However, if aspirin is not readily available, do not exert yourself trying to find some; indeed, don’t move more than necessary.
Do not drive yourself to hospital; it will increase the risk of fainting, and you may crash.
While you are waiting, your main job is to remain calm; he recommends deep breathing, and lying with knees elevated or feet on a chair; this latter is to minimize the strain on your heart.
For more on all this, plus the key symptoms and risk factors, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
Heart Attack: His & Hers (Be Prepared!)
Take care!
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
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