Marathons in Mid- and Later-Life
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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
We had several requests pertaining to veganism, meatless mondays, and substitutions in recipes—so we’re going to cover those on a different day!
As for questions we’re answering today…
Q: Is there any data on immediate and long term effects of running marathons in one’s forties?
An interesting and very specific question! We didn’t find an overabundance of studies specifically for the short- and long-term effects of marathon-running in one’s 40s, but we did find a couple of relevant ones:
The first looked at marathon-runners of various ages, and found that…
- there are virtually no relevant running time differences (p<0.01) per age in marathon finishers from 20 to 55 years
- the majority of middle-aged and elderly athletes have training histories of less than seven years of running
From which they concluded:
❝The present findings strengthen the concept that considers aging as a biological process that can be considerably speeded up or slowed down by multiple lifestyle related factors.❞
See the study: Performance, training and lifestyle parameters of marathon runners aged 20–80 years: results of the PACE-study
The other looked specifically at the impact of running on cartilage, controlled for age (45 and under vs 46 and older) and activity level (marathon-runners vs sedentary people).
The study had the people, of various ages and habitual activity levels, run for 30 minutes, and measured their knee cartilage thickness (using MRI) before and after running.
They found that regardless of age or habitual activity level, running compressed the cartilage tissue to a similar extent. From this, it can be concluded that neither age nor marathon-running result in long-term changes to cartilage response to running.
Or in lay terms: there’s no reason that marathon-running at 40 should ruin your knees (unless you are doing something wrong).
That may or may not have been a concern you have, but it’s what the study looked at, so hey, it’s information.
Here’s the study: Functional cartilage MRI T2 mapping: evaluating the effect of age and training on knee cartilage response to running
Q: Information on [e-word] dysfunction for those who have negative reactions to [the most common medications]?
When it comes to that particular issue, one or more of these three factors are often involved:
- Hormones
- Circulation
- Psychology
The most common drugs (that we can’t name here) work on the circulation side of things—specifically, by increasing the localized blood pressure. The exact mechanism of this drug action is interesting, albeit beyond the scope of a quick answer here today. On the other hand, the way that they work can cause adverse blood-pressure-related side effects for some people; perhaps you’re one of them.
To take matters into your own hands, so to speak, you can address each of those three things we just mentioned:
Hormones
Ask your doctor (or a reputable phlebotomy service) for a hormone test. If your free/serum testosterone levels are low (which becomes increasingly common in men over the age of 45), they may prescribe something—such as testosterone shots—specifically for that.
This way, it treats the underlying cause, rather than offering a workaround like those common pills whose names we can’t mention here.
Circulation
Look after your heart health; eat for your heart health, and exercise regularly!
Cold showers/baths also work wonders for vascular tone—which is precisely what you need in this matter. By rapidly changing temperatures (such as by turning off the hot water for the last couple of minutes of your shower, or by plunging into a cold bath), your blood vessels will get practice at constricting and maintaining that constriction as necessary.
Psychology
[E-word] dysfunction can also have a psychological basis. Unfortunately, this can also then be self-reinforcing, if recalling previous difficulties causes you to get distracted/insecure and lose the moment. One of the best things you can do to get out of this catch-22 situation is to not worry about it in the moment. Depending on what you and your partner(s) like to do in bed, there are plenty of other equally respectable options, so just switch track!
Having a conversation about this in advance will probably be helpful, so that everyone’s on the same page of the script in that eventuality, and it becomes “no big deal”. Without that conversation, misunderstandings and insecurities could arise for your partner(s) as well as yourself (“aren’t I desirable enough?” etc).
So, to recap, we recommend:
- Have your hormones checked
- Look after your circulation
- Make the decision to have fun!
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What Macronutrient Balance Is Right For You?
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
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 😎
❝I want to learn more about macros. Can you cover that topic?❞
That’s a little broader than we usually go for, given the amount of space we have, but let’s give it a go!
Macronutrients, or “macros”, are the nutrients that we typically measure in grams rather than milligrams or micrograms, and are:
- Carbohydrates
- …and what kinds, of which usually the focus is on how much is sugars as opposed to more complex carbs that take longer to break down. See also: Should You Go Light Or Heavy On Carbs?
- …and of the sugars, the interested may further categorize them into sucrose, fructose, etc. See also: Which Sugars Are Healthier, And Which Are Just The Same?
- Proteins
- …of which, the amino acid make-up is generally considered a matter of micronutrients. See also: Protein: How Much Do We Need, Really?
- Fats
- …and what kinds, i.e. monounsaturated vs polyunsaturated vs saturated. See also: Saturated Fat: What’s The Truth?
- …and then the interested may further categorize them for their fatty acids / triglycerides profile, etc. See also: What Omega-3 Fatty Acids Really Do For Us
- Fiber
- …which often gets ignored by people counting macros, as “stuff that doesn’t do anything”, despite it in fact being very important for health. See also: Why You’re Probably Not Getting Enough Fiber (And How To Fix It)
- Water
- …which again tends to get disregarded but is very arguably a critical macronutrient. See also: Busting The Myth of “Eight Glasses Of Water A Day”
In terms of how much we need of each, you can read more in the above-linked articles, but:
- General scientific consensus is we need plenty of fiber (30 or 40g per day is good) and water (highly dependent on climate and activity), and there’s a clear minimum requisite for protein (usually put at around 1g of protein per day per 1kg of body weight).
- There is vigorous debate in the general health community about what the best ratio of carbs to fat is.
The reality is that humans are quite an adaptable species, and while we absolutely do need at least some of both (carbohydrates and fats), we can play around with the ratios quite a bit, provided we don’t get too extreme about it.
While some influence is social and often centered around weight loss (see for example keto which seeks to minimize carbs, and volumetrics, which seeks maximise volume-to-calorie ratio, which de facto tends to minimize fats), some of what drives us to lean one way or the other will be genetics, too—dependent on what our ancestors ate more or less of.
Writer’s example: my ancestors could not grow much grain (or crops in general) where they were, so they got more energy from such foods as whale and seal fat (with protein coming more from reindeer). Now, biology is not destiny, and I personally enjoy a vegan diet, but my genes are probably why I am driven to get most of my daily calories from fat (of which, a lot of fatty nuts (don’t tell almonds, but I prefer walnuts and cashews) and healthy oils such as olive oil, avocado oil, and coconut oil).
However! About that adaptability. Provided we make changes slowly, we can usually adjust our diet to whatever we want it to be, including whether we get our energy more from carbs or fats. The reason we need to make changes slowly is because our gut needs time to adjust. For example, if your vegan writer here were to eat her ancestrally-favored foods now, I’d be very ill, because my gut microbiome has no idea what to do with animal products anymore, no matter what genes I have. In contrast, if an enthusiastic enjoyer of a meat-heavy diet were to switch to my fiber-rich diet overnight, they’d be very ill.
So: follow your natural inclinations, make any desired changes slowly, and if in doubt, it’s hard to go wrong with enjoying carbs and fats in moderation.
Learn more: Intuitive Eating Might Not Be What You Think
Take care!
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- Carbohydrates
New News From The Centenarian Blue Zones
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From Blue To Green…
We sometimes write about supercentenarians, which word is usually used in academia to refer to people who are not merely over 100 years of age, but over 110 years. These people can be found in many countries, but places where they have been found to be most populous (as a percentage of the local population) have earned the moniker “Blue Zones”—of which Okinawa and Sardinia are probably the most famous, but there are others too.
This is in contrast to, for example “Red Zones”, a term often used for areas where a particular disease is endemic, or areas where a disease is “merely” epidemic, but particularly rife at present.
In any case, back to the Blue Zones, where people live the longest and healthiest—because the latter part is important too! See also:
- Lifespan: how long we live
- Healthspan: how long we stay healthy (portmanteau of “healthy lifespan”)
Most of our readers don’t live in a Blue Zone (in fact, many live in a COVID Red Zone, a diabetes Red Zone, and a heart disease Red Zone), but that doesn’t mean we can’t all take tips from the Blue Zones and apply them, for example:
- The basics: The Blue Zones’ Five Pillars Of Longevity
- Going beyond: The Five Key Traits Of Healthy Aging
You may be wondering… How much good will this do me? And, we do have an answer for that:
When All’s Said And Done, How Likely Are You To Live To 100?
Now that we’re all caught-up…
The news from the Blues
A team of researchers did a big review of observational studies of centenarians and near-centenarians (aged 95+). Why include the near-centenarians, you ask? Well, most of the studies are also longitudinal, and if we’re doing an observational study of the impact of lifestyle factors on a 100-year-old, it’s helpful to know what they’ve been doing recently. Hence nudging the younger-end cutoff a little lower, so as to not begin each study with fresh-faced 100-year-olds whom we know nothing about.
Looking at thousands of centenarians (and near-centenarians, but also including some supercentenarians, up the age of 118), the researchers got a lot of very valuable data, far more than we have room to go into here (do check out the paper at the bottom of this article, if you have time; it’s a treasure trove of data), but one of the key summary findings was a short list of four factors they found contributed the most to extreme longevity:
- A diverse diet with low salt intake: in particular, a wide variety of plant diversity, including protein-rich legumes, though fish featured prominently also. On average they got 57% and 65% of their energy intake from carbohydrates, 12% to 32% from protein, and 27% to 31% from fat. As for salt, they averaged 1.6g of sodium per day, which is well within the WHO’s recommendation of averaging under 2g of sodium per day. As a matter of interest, centenarians in Okinawa itself averaged 1.1g of sodium per day.
- Low medication use: obviously there may be a degree of non-causal association here, i.e. the same people who just happened to be healthier and therefore lived longer, correspondingly took fewer medications—they took fewer medications because they were healthier; they weren’t necessarily healthier because they took fewer medications. That said, overmedication can be a big problem, especially in places with a profit motive like the US, and can increase the risk of harmful drug interactions, and side effects that then need more medications to treat the side effects, as well as direct iatrogenic damage (i.e. this drug treats your condition, but as the cost of harming you in some other way). Naturally, sometimes we really do need meds, but it’s a good reminder to do a meds review with one’s doctor once in a while, and see if everything’s still of benefit.
- Getting good sleep: not shocking, and this one’s not exactly news. But what may be shocking is that 68% of centenarians reported consistently getting enough good-quality sleep. To put that into perspective, only 35% of 10almonds readers reported regularly getting sleep in the 7–9 hours range.
- Rural living environment: more than 75% of the centenarians and near-centenarians lived in rural areas. This is not usually something touted as a Blue Zones thing on lists of Blue zones things, but this review strongly highlighted it as very relevant. In the category of things that are more obvious once it’s pointed out, though, this isn’t necessarily such a difference between “country folk” and “city folk”, so much as the ability to regularly be in green spaces has well-established health benefits physically, mentally, and both combined (such as: neurologically).
And showing that yes, even parks in cities make a significant difference:
Want to know more?
You can read the study in full here:
A systematic review of diet and medication use among centenarians and near-centenarians worldwide
Take care!
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Cavolo Nero & Sweet Potato Hash
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🎶 Sweet potato hash? It’s a seasonal smash… Catches on in a flash… Let’s do the hash 🎶
You will need
- 6 oz cavolo nero, tough stems removed, chopped
- 1 large sweet potato, diced
- 1 large red onion, finely chopped
- 1 parsnip, grated
- 1 small red pepper, chopped
- 4 oz baby portobello mushrooms, chopped
- ½ cup fresh or thawed peas
- ¼ bulb garlic, thinly sliced
- 1 tbsp nutritional yeast
- 2 tsp black pepper, coarse ground
- 1 tsp dried rosemary
- 1 tsp dried thyme (dried for convenience; fresh is also fine if you have it)
- 1 tsp red chili flakes (dried for convenience; fresh is also fine if you have it)
- 1 tsp ground turmeric
- ½ tsp MSG or 1 tsp low-sodium salt
- Extra virgin olive oil
Method
(we suggest you read everything at least once before doing anything)
1) Preheat the oven to 425℉ / 220℃.
2) Toss the diced sweet potato in 1 tbsp olive oil, as well as the nutritional yeast, ground turmeric, black pepper, and MSG/salt, ensuring an even distribution. Roast in the oven on a lined baking tray, for 30 minutes, turning at least once to get all sides of the potato. When it is done, remove from the oven and set aside.
3) Heat a little oil in a sauté pan or large skillet (either is fine; we’re not adding liquids today), and fry the onion, parsnip, and pepper until softened, which should take about 5 minutes (this is one reason why we grated the parsnip; the other is for the variation in texture).
4) Add the garlic, mushrooms, herbs, and chili flakes, and cook for a further 1 minute, while stirring.
5) Add the cavolo nero and peas, stir until the cavolo nero begins to wilt, and then…
6) Add the roasted sweet potato; cook for about 5 more minutes, pressing down with the spatula here and there to mash the ingredients together.
7) Turn the hash over when it begins to brown on the bottom, to lightly brown the other side too.
8) Serve hot.
Enjoy!
Want to learn more?
For those interested in some of the science of what we have going on today:
- Brain Food? The Eyes Have It!
- Which Bell Peppers To Pick?
- Ergothioneine: “The Longevity Vitamin” (That’s Not A Vitamin)
- Our Top 5 Spices: How Much Is Enough For Benefits?
- What’s Your Plant Diversity Score?
Take care!
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Do we really need to burp babies? Here’s what the research says
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Parents are often advised to burp their babies after feeding them. Some people think burping after feeding is important to reduce or prevent discomfort crying, or to reduce how much a baby regurgitates milk after a feed.
It is true babies, like adults, swallow air when they eat. Burping releases this air from the top part of our digestive tracts. So when a baby cries after a feed, many assume it’s because the child needs to “be burped”. However, this is not necessarily true.
Why do babies cry or ‘spit up’ after a feed?
Babies cry for a whole host of reasons that have nothing to do with “trapped air”.
They cry when they are hungry, cold, hot, scared, tired, lonely, overwhelmed, needing adult help to calm, in discomfort or pain, or for no identifiable reason. In fact, we have a name for crying with no known cause; it’s called “colic”.
“Spitting up” – where a baby gently regurgitates a bit of milk after a feed – is common because the muscle at the top of a newborn baby’s stomach is not fully mature. This means what goes down can all too easily go back up.
Spitting up frequently happens when a baby’s stomach is very full, there is pressure on their tummy or they are picked up after lying down.
Spitting up after feeding decreases as babies get older. Three-quarters of babies one month old spit up after feeding at least once a day. Only half of babies still spit up at five months and almost all (96%) stop by their first birthdays.
There’s not much research out there on ‘burping’ babies. antoniodiaz/Shutterstock Does burping help reduce crying or spitting up?
Despite parents being advised to burp their babies, there’s not much research evidence on the topic.
One study conducted in India encouraged caregivers of 35 newborns to burp their babies, while caregivers of 36 newborns were not given any information about burping.
For the next three months, mothers and caregivers recorded whether their baby would spit up after feeding and whether they showed signs of intense crying.
This study found burping did not reduce crying and actually increased spitting up.
When should I be concerned about spitting up or crying?
Most crying and spitting up is normal. However, these behaviours are not:
- refusing to feed
- vomiting so much milk weight gain is slow
- coughing or wheezing distress while feeding
- bloody vomit.
If your baby has any of these symptoms, see a doctor or child health nurse.
If your baby seems unbothered by vomiting and does not have any other symptoms it is a laundry problem rather than something that needs medical attention.
It is also normal for babies to cry and fuss quite a lot; two hours a day, for about the first six weeks is the average.
This has usually reduced to about one hour a day by the time they are three months of age.
Crying more than this doesn’t necessarily mean there is something wrong. The intense, inconsolable crying of colic is experienced by up to one-quarter of young babies but goes away with time on its own .
If your baby is crying more than average or if you are worried there might be something wrong, you should see your doctor or child health nurse.
If your baby likes being ‘burped’, then it’s OK to do it. But don’t stress if you skip it. Miljan Zivkovic/Shutterstock Not everyone burps their baby
Burping babies seems to be traditional practice in some parts of the world and not in others.
For example, research in Indonesia found most breastfeeding mothers rarely or never burped their babies after feeding.
One factor that may influence whether a culture encourages burping babies may be related to another aspect of infant care: how much babies are carried.
Carrying a baby in a sling or baby carrier can reduce the amount of time babies cry.
Babies who are carried upright on their mother or another caregiver’s front undoubtedly find comfort in that closeness and movement.
Babies in slings are also being held firmly and upright, which would help any swallowed air to rise up and escape via a burp if needed.
Using slings can make caring for a baby easier. Studies (including randomised controlled trials) have also shown women have lower rates of post-natal depression and breastfeed for longer when they use a baby sling.
It is important baby carriers and slings are used safely, so make sure you’re up to date on the latest advice on how to do it.
So, should I burp my baby?
The bottom line is: it’s up to you.
Gently burping a baby is not harmful. If you feel burping is helpful to your baby, then keep doing what you’re doing.
If trying to burp your baby after every feed is stressing you or your baby out, then you don’t have to keep doing it.
Karleen Gribble, Adjunct Associate Professor, School of Nursing and Midwifery, Western Sydney University and Nina Jane Chad, Research Fellow, University of Sydney School of Public Health, University of Sydney
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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L-Theanine: What’s The Tea?
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L-Theanine: What’s The Tea?
We’ve touched previously on l-theanine, when this newsletter was new, and we had only a few hundred subscribers and the carefully organized format wasn’t yet what it is today.
So now it’s time to give this potent dietary compound / nutritional supplement the “Monday Research Review” treatment…
What is it?
L-theanine is an amino acid found in tea. The human body can’t produce it, and/but it’s not essential for humans. It does have a lot of benefits, though. See for example:
L-Theanine as a Functional Food Additive: Its Role in Disease Prevention and Health Promotion
How does it work?
L-theanine works by moderating and modulating the brain’s neurotransmitters.
This sounds fancy, but basically it means: it doesn’t actually add anything in the manner of a drug, but it changes how we use what we have naturally.
What does it do? Read on…
It increases mental focus
It has been believed that l-theanine requires the presence of caffeine to achieve this (i.e., it’s a combination-only effect). For example:
But as it turns out, when a group of researchers actually checked… This isn’t true, as Foxe et al. write:
❝We asked whether either compound alone, or both in combination, would affect performance of the task in terms of reduced error rates over time, and whether changes in alpha-band activity would show a relationship to such changes in performance. When treated with placebo, participants showed a rise in error rates, a pattern that is commonly observed with increasing time-on-task, whereas after caffeine and theanine ingestion, error rates were significantly reduced. The combined treatment did not confer any additional benefits over either compound alone, suggesting that the individual compounds may confer maximal benefits at the dosages employed❞
It promotes a calmly wakeful feeling of serenity
Those are not words typically found in biopharmaceutical literature, but they’re useful here to convey:
- L-theanine promotes relaxation without causing drowsiness
- L-theanine promotes mental alertness without being a stimulant
Here is where l-theanine really stands out from caffeine. If both substances promote mental focus, but one of them does it by making us “wired” and the other does it while simultaneously promoting calm, it makes the choice between them clearer!
Read more: L-theanine, a natural constituent in tea, and its effect on mental state
It relieves stress and anxiety
Building on from the above, but there’s more: l-theanine relieves stress and anxiety in people experiencing stressful situations, without any known harmful side effects… This is something that sets it apart from a lot of anxiolytic (antianxiety) drugs!
Here’s what a big systematic review of clinical trials had to say:
Theanine consumption, stress and anxiety in human clinical trials: A systematic review
L-theanine has other benefits too
We’ve talked about some of the most popular benefits of l-theanine, and we can’t make this newsletter too long, but research also suggests that it…
- Supports healthy weight management
- Reduces inflammation
- Supports immune health
- Helps fight cancer
- May extend lifespan ← this one’s a C. elegans study, but despite being a tiny worm, they actually function very similarly to humans on a cellular level; it’s why they’re used so much for anti-aging research
If you’re interested in this topic, we recommend also reading our previous article on l-theanine—pardon that we hadn’t really nailed down our style yet—but there’s a bunch of useful information about how l-theanine makes caffeine “better” in terms of benefits. We also talk dosage, and reference some other studies we didn’t have room to include today!
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To-Do List Formula – by Damon Zahariades
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The first part of this book is given to reviewing popular to-do list methods that are already widely “out there”. This treatment is practical and exploratory, looking at the pros and cons of each.
The second part of the book is more Zahariades’ own method, taking what he sees as the best of each, plus some tricks and practices of his own. With these, he builds (and shares!) his optimized system.
You may be wondering what you, dear reader, can expect to get out of this book. Well, that depends on where you’re coming from:
Are you new to approaching your general to-dos with a system more organized than post-it notes on your fridge? If so, this will be a great initial introduction to many systems.
Or are you, perhaps, a veteran of GTD, ToDoist, assorted Pomodoro-based systems, and more? Do you do/delegate/defer/ditch tasks more deftly and dextrously than Serena Williams despatches tennis balls?
If so, what you’re more likely to gain here is a fresh perspective on old ideas, and maybe a trick or two you didn’t know before. At the very least, a boost to your motivation, getting you fired up for doing what you know best again.
All in all, a very respectable book for anyone’s to-read list!
Pick Up Your Copy of Zahariades’ To-Do List Formula on Amazon Today!
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