The Five Key Traits Of Healthy Aging
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The Five Keys Of Aging Healthily
This is Dr. Daniel Levitin. He’s a neuroscientist, and his research focuses on aging, the brain, health, productivity, and creativity. Also music, and he himself is an accomplished musician also, but we’re not going to be focusing on that today.
We’re going to be looking at the traits that, according to science, promote healthy longevity in old age. In other words, the things that increase our healthspan, from the perspective of a cognitive scientist.
What does he say we should do?
Dr. Levitin offers us what he calls the “COACH” traits:
- Curiosity
- Openness
- Associations
- Conscientiousness
- Healthy practices
By “associations”, he means relationships. However, that would have made the acronym “CORCH”, and decisions had to be made.
Curiosity
Leonardo da Vinci had a list of seven traits he considered most important.
We’ll not go into those today (he is not our featured expert of the day!), but we will say that he agreed with Dr. Levitin on what goes at the top of the list: curiosity.
- Without curiosity, we will tend not to learn things, and learning things is key to keeping good cognitive function in old age
- Without curiosity, we will tend not to form hypotheses about how/why things are the way they are, so we will not exercise imagination, creativity, problem-solving, and other key functions of our brain
- Without curiosity, we will tend not to seek out new experiences, and consequently, our stimuli will be limited—and thus, so will our brains
Openness
Being curious about taking up ballroom dancing will do little for you, if you are not also open to actually trying it. But, openness is not just a tag-on to curiosity; it deserves its spot in its own right too.
Sometimes, ideas and opportunities come to us unbidden, and we have to be able to be open to those too. This doesn’t mean being naïve, but it does mean having at least a position of open-minded skepticism.
Basically, Dr. Levitin is asking us to be the opposite of the pejorative stereotype of “an old person stuck in their ways”.
Associations
People are complex, and so they bring complexities to our lives. Hopefully, positively stimulating ones. Without them to challenge us (again, hopefully in a positive way), we can get very stuck in a narrow field of experience.
And of course, having at least a few good friends has numerous benefits to health. There’s been a lot of research on this; 5 appears to be optimal.
- More than that, and the depth tends to tail off, and/or stresses ensue from juggling too many relationships
- Fewer than that, and we might be only a calendar clash away from loneliness
Friends provide social stimulation and mutual support; they’re good for our mental health and even our physiological immunity (counterintuitively, by means of shared germs).
And, a strong secure romantic relationship is something that has been found time and again to extend healthy life.
Note: by popular statistics, this benefit is conferred upon men partnered with women, men partnered with men, women partnered with women, but not women partnered with men.
There may be a causative factor that’s beyond the scope of this article which is about cognitive science, not feminism, but there could also be a mathematical explanation for this apparent odd-one-out:
Since women tend to live longer than men (who are also often older than their female partners), women who live the longest are often not in a relationship—precisely because they are widows. So these long-lived widows will tend to skew the stats, through no fault of their husbands.
On the flipside of this, for a woman to predecease her (statistically older and shorter-lived) husband will often require that she die quite early (perhaps due to accident or illness unrelated to age), which will again skew the stats to “women married to men die younger”, without anything nefarious going on.
Conscientiousness
People who score highly in the character trait “conscientiousness” will tend to live longer. The impact is so great, that a child’s scores will tend to dictate who dies in their 60s or their 80s, for example.
What does conscientiousness mean? It’s a broad character trait that’s scored in psychometric tests, so it can be things that have a direct impact on health, such as brushing one’s teeth, or things that are merely correlated, such as checking one’s work for typos (this writer does her best!).
In short, if you are the sort of person who attends to the paperwork for your taxes on time, you are probably also the sort of person who remembers to get your flu vaccination and cancer screening.
Healthy practices
This means “the usual things”, such as:
- Healthy diet (Mediterranean Diet consistently scores up top)
- Good exercise (especially the tendency to keep moving in general)
- Good sleep (7–9 hours, no compromises)
- Not drinking (or at least only very moderate consumption, but the only safe amount is zero)
- Not smoking (just don’t; there is no wiggle room on this one)
Want to learn more?
You can check out his book, which we reviewed all so recently, and you can also enjoy this video, in which he talks about matters concerning healthy aging from a neuroscientist’s perspective, ranging from heart health and neurodegeneration, to the myth of failing memory, to music and lifespan and more:
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The Cancer Journey – by Dr. Chadi Nabhan
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After a brief introduction of what cancer actually is and what causes it, the layout of the rest of the book is in chronological order of patient experience, that is to say, what to expect during the journey from screening and diagnosis, to one’s first oncology visit (the author being an oncologist himself), how cancer staging works, getting second opinions, and a chapter-by-chapter review of many different treatment options, ranging from surgery and chemotherapy, to radiation and hormonal therapies, and even more modern targeted therapies, immunotherapy, cellular therapies, and yes, complementary and alternative therapies, amongst others we haven’t listed for the sake of brevity.
He doesn’t leave it there though; he also talks managing side effects, monitoring for recurrence, and even caring for the caregiver(s), along with eventual survivorship and that emotional journey, or if it comes down to it, palliative and hospice care.
Finishing on a hopeful note, he also brings attention to novel approaches that are being trialled presently, and the prospects for the near future of cancer care.
The style is very human and readable, notwithstanding that the author has hundreds of peer-reviewed publications to his name, the content here is presented in a much more approachable, less clinical way, while still conveying all the information that needs to be conveyed.
Bottom line: if you or a loved one is facing cancer, this book will be an invaluable resource.
Click here to check out The Cancer Journey, and understand each part of it!
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Protein: How Much Do We Need, Really?
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Mythbusting Protein!
Yesterday, we asked you for your policy on protein consumption. The distribution of responses was as follows:
- A marginal majority (about 55%) voted for “Protein is very important, but we can eat too much of it”
- A large minority (about 35%) voted for “We need lots of protein; the more, the better!”
- A handful (about 4%) voted for “We should go as light on protein as possible”
- A handful (6%) voted for “If we don’t eat protein, our body will create it from other foods”
So, what does the science say?
If we don’t eat protein, our body will create it from other foods: True or False?
Contingently True on an absurd technicality, but for all practical purposes False.
Our body requires 20 amino acids (the building blocks of protein), 9 of which it can’t synthesize and absolutely must get from food. Normally, we get those amino acids from protein in our diet, and we can also supplement them by buying amino acid supplements.
Specifically, we require (per kg of bodyweight) a daily average of:
- Histidine: 10 mg
- Isoleucine: 20 mg
- Leucine: 39 mg
- Lysine: 30 mg
- Methionine: 10.4 mg
- Phenylalanine*: 25 mg
- Threonine: 15 mg
- Tryptophan: 4 mg
- Valine: 26 mg
*combined with the non-essential amino acid tyrosine
Source: Protein and Amino Acid Requirements In Human Nutrition: WHO Technical Report
However, to get the requisite amino acid amounts, without consuming actual protein, would require gargantuan amounts of supplementation (bearing in mind bioavailability will never be 100%, so you’ll always need to take more than it seems), using supplements that will have been made by breaking down proteins anyway.
So unless you live in a laboratory and have access to endless amounts of all of the required amino acids (you can’t miss even one; you will die), and are willing to do that for the sake of proving a point, then you do really need to eat protein.
Your body cannot, for example, simply break down sugar and use it to make the protein you need.
On another technical note… Do bear in mind that many foods that we don’t necessarily think of as being sources of protein, are sources of protein.
Grains and grain products, for example, all contain protein; we just don’t think of them as that because their macronutritional profile is heavily weighted towards carbohydrates.
For that matter, even celery contains protein. How much, you may ask? Almost none! But if something has DNA, it has protein. Which means all plants and animals (at least in their unrefined forms).
So again, to even try to live without protein would very much require living in a laboratory.
We can eat too much protein: True or False?
True. First on an easy technicality; anything in excess is toxic. Even water, or oxygen. But also, in practical terms, there is such a thing as too much protein. The bar is quite high, though:
❝Based on short-term nitrogen balance studies, the Recommended Dietary Allowance of protein for a healthy adult with minimal physical activity is currently 0.8 g protein per kg bodyweight per day❞
❝To meet the functional needs such as promoting skeletal-muscle protein accretion and physical strength, dietary intake of 1.0, 1.3, and 1.6 g protein per kg bodyweight per day is recommended for individuals with minimal, moderate, and intense physical activity, respectively❞
❝Long-term consumption of protein at 2 g per kg bodyweight per day is safe for healthy adults, and the tolerable upper limit is 3.5 g per kg bodyweight per day for well-adapted subjects❞
❝Chronic high protein intake (>2 g per kg bodyweight per day for adults) may result in digestive, renal, and vascular abnormalities and should be avoided❞
Source: Dietary protein intake and human health
To put this into perspective, if you weigh about 160lbs (about 72kg), this would mean eating more than 144g protein per day, which grabbing a calculator means about 560g of lean beef, or 20oz, or 1¼lb.
If you’re eating quarter-pounder burgers though, that’s not usually so lean, so you’d need to eat more than nine quarter-pounder burgers per day to get too much protein.
High protein intake damages the kidneys: True or False?
True if you have kidney damage already; False if you are healthy. See for example:
- Effects of dietary protein restriction on the progression of advanced renal disease in the modification of diet in renal disease study
- A high protein diet has no harmful effects: a one-year crossover study in healthy male athletes
High protein intake increases cancer risk: True or False?
True or False depending on the source of the protein, so functionally false:
- Eating protein from red meat sources has been associated with higher risk for many cancers
- Eating protein from other sources has been associated with lower risk for many cancers
Source: Red Meat Consumption and Mortality Results From 2 Prospective Cohort Studies
High protein intake increase risk of heart disease: True or False?
True or False depending on the source of the protein, so, functionally false:
- Eating protein from red meat sources has been associated with higher risk of heart disease
- Eating protein from other sources has been associated with lower risk of heart disease
Source: Major Dietary Protein Sources and Risk of Coronary Heart Disease in Women
In summary…
Getting a good amount of good quality protein is important to health.
One can get too much, but one would have to go to extremes to do so.
The source of protein matters:
- Red meat is associated with many health risks, but that’s not necessarily the protein’s fault.
- Getting plenty of protein from (ideally: unprocessed) sources such as poultry, fish, and/or plants, is critical to good health.
- Consuming “whole proteins” (that contain all 9 amino acids that we can’t synthesize) are best.
Learn more: Complete proteins vs. incomplete proteins (explanation and examples)
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No Equipment Muscle Gain Routine for Ages 50+
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Sarcopenia, the loss of muscle mass commonly associated with aging, can be a big problem as it leaves us vulnerable to injury (and also isn’t great for the metabolism—keeping adequate muscle mass ensures keeping the metabolism ticking over nicely). Will Harlow, over-50s specialist physiotherapist, is here to share a routine that works without weights:
Where it counts
There’s a fair amount of emphasis here on the lower body and core. That’s because in practical terms, this is what matters more for our health than having bulging biceps:
- First exercise: donkey calf raises to build strength in the calves using a chair.
- Second exercise: single-leg elevated lunge to work the quads and glutes, using a step or books for elevation.
- Third exercise: slow sit-to-stand for quads, glutes, and core strength, focusing on a slow descent.
- Fourth exercise: wall press-up to strengthen the chest, shoulders, and arms, with a variation using towels for increased resistance.
- Final exercise: shoulder raises using bottles or similar weights to target the shoulders and rotator cuffs.
Ok, so that last one was a slight cheat on his part as it does require grabbing a weight, but it’s not specialist equipment at least, and can just be something you grabbed at home. It’s also the least important of the five exercises, and can be skipped if necessary.
For more on all of these plus visual demonstrations, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
Take care!
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The Mediterranean Diet Cookbook for Beginners – by Jessica Aledo
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There are a lot of Mediterranean Diet books on the market, and not all of them actually stick to the Mediterranean Diet. There’s a common mistake of thinking “Well, this dish is from the Mediterranean region, so…”, but that doesn’t make, for example, bacon-laden carbonara part of the Mediterranean Diet!
Jessica Aledo does better, and sticks unwaveringly to the Mediterranean Diet principles.
First, she gives a broad introduction, covering:
- The Mediterranean Diet pyramid
- Foods to eat on the Mediterranean Diet
- Foods to avoid on the Mediterranean Diet
- Benefits of the Mediterranean Diet
Then, it’s straight into the recipes, of which there are 201 (as with many recipe books, the title is a little misleading about this).
They’re divided into sections, thus:
- Breakfasts
- Lunches
- Snacks
- Dinners
- Desserts
The recipes are clear and simple, one per double-page, with high quality color illustrations. They give ingredients/directions/nutrients. There’s no padding!
Helpfully, she does include a shopping list as an appendix, which is really useful!
Bottom line: if you’re looking to build your Mediterranean Diet repertoire, this book is an excellent choice.
Get your copy of The Mediterranean Diet Cookbook for Beginners from Amazon today!
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Red Lentils vs Oats – Which is Healthier?
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Our Verdict
When comparing red lentils to oats, we picked the oats.
Why?
In terms of macros, oats have more protein, carbs, fiber, and even a little fat—mostly healthy mono- and polyunsaturated fats, thus making them the more nutritionally dense. That said, red lentils have the lower glycemic index, (low GI compared to oats’ medium GI) which offsets that, so we’ll call this category a tie.
In the category of vitamins, red lentils have more of vitamins B6, B9, and choline, while oats have more of vitamins B1, B2, and B5. Another tie!
When it comes to minerals, however, we have a tiebreaker category: red lentils have more selenium, while oats have more calcium, copper, iron, magnesium, manganese, phosphorus, potassium, and zinc. An easy win for oats this time!
So, thanks to the minerals, oats are the clear winner in total. But by all means, enjoy either or both; diversity is good!
Want to learn more?
You might like to read:
The Best Kind Of Fiber For Overall Health? ← it’s β-glucan, the kind find in oats!
Enjoy!
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I’m iron deficient. Which supplements will work best for me and how should I take them?
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Iron deficiency is common and can be debilitating. It mainly affects women. One in three premenopausal women are low in iron compared to just 5% of Australian men. Iron deficiency particularly affects teenage girls, women who do a lot of exercise and those who are pregnant.
The body needs iron to make new red blood cells, and to support energy production, the immune system and cognitive function. If you’re low, you may experience a range of symptoms including fatigue, weakness, shortness of breath, headache, irregular heartbeat and reduced concentration.
If a blood test shows you’re iron deficient, your doctor may recommend you start taking an oral iron supplement. But should you take a tablet or a liquid? With food or not? And when is the best time of day?
Here are some tips to help you work out how, when and what iron supplement to take.
LittlePigPower/Shutterstock How do I pick the right iron supplement?
The iron in your body is called “elemental iron”. Choosing the right oral supplement and dose will depend on how much elemental iron it has – your doctor will advise exactly how much you need.
The sweet spot is between 60-120 mg of elemental iron. Any less and the supplement won’t be effective in topping up your iron levels. Any higher and you risk gastrointestinal symptoms such as diarrhoea, cramping and stomach pain.
Low iron can especially affect people during pregnancy and women who do a lot of sport. Kamil Macniak/Shutterstock In Australia, iron salts are the most common oral supplements because they are cheap, effective and come in different delivery methods (tablets, capsules, liquid formulas). The iron salts you are most likely to find in your local chemist are ferrous sulfate (~20% elemental iron), ferrous gluconate (~12%) and ferrous fumarate (~33%).
These formulations all work similarly, so your choice should come down to dose and cost.
Many multivitamins may look like an iron supplement, but it’s important to note they usually have too little iron – usually less than 20 mg – to correct an iron deficiency.
Should I take tablets or liquid formulas?
Iron contained within a tablet is just as well absorbed as iron found in a liquid supplement. Choosing the right one usually comes down to personal preference.
The main difference is that liquid formulas tend to contain less iron than tablets. That means you might need to take more of the product to get the right dose, so using a liquid supplement could work out to be more expensive in the long term.
What should I eat with my iron supplement?
Research has shown you will absorb more of the iron in your supplement if you take it on an empty stomach. But this can cause more gastrointestinal issues, so might not be practical for everyone.
If you do take your supplement with meals, it’s important to think about what types of food will boost – rather than limit – iron absorption. For example, taking the supplement alongside vitamin C improves your body’s ability to absorb it.
Some supplements already contain vitamin C. Otherwise you could take the supplement along with a glass of orange juice, or other vitamin C-rich foods.
Taking your supplement alongside foods rich in vitamin C, like orange juice or kiwifruit, can help your body absorb the iron. Anete Lusina/Pexels On the other hand, tea, coffee and calcium all decrease the body’s ability to absorb iron. So you should try to limit these close to the time you take your supplement.
Should I take my supplement in the morning or evening?
The best time of day to take your supplement is in the morning. The body can absorb significantly more iron earlier in the day, when concentrations of hepcidin (the main hormone that regulates iron) are at their lowest.
Exercise also affects the hormone that regulates iron. That means taking your iron supplement after exercising can limit your ability to absorb it. Taking your supplement in the hours following exercise will mean significantly poorer absorption, especially if you take it between two and five hours after you stop.
Our research has shown if you exercise every day, the best time to take your supplement is in the morning before training, or immediately after (within 30 minutes).
My supplements are upsetting my stomach. What should I do?
If you experience gastrointestinal side effects such as diarrhoea or cramps when you take iron supplements, you may want to consider taking your supplement every second day, rather than daily.
Taking a supplement every day is still the fastest way to restore your iron levels. But a recent study has shown taking the same total dose can be just as effective when it’s taken on alternate days. For example, taking a supplement every day for three months works as well as every second day for six months. This results in fewer side effects.
Oral iron supplements can be a cheap and easy way to correct an iron deficiency. But ensuring you are taking the right product, under the right conditions, is crucial for their success.
It’s also important to check your iron levels prior to commencing iron supplementation and do so only under medical advice. In large amounts, iron can be toxic, so you don’t want to be consuming additional iron if your body doesn’t need it.
If you think you may be low on iron, talk to your GP to find out your best options.
Alannah McKay, Postdoctoral Research Fellow, Sports Nutrition, Australian Catholic University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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