L-Theanine: What’s The Tea?
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.
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!
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
-
Glycemic Index vs Glycemic Load vs Insulin Index
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.
How To Actually Use Those Indices
Carbohydrates are essential for our life, and/but often bring about our early demise. It would be a very conveniently simple world if it were simply a matter of “enjoy in moderation”, but the truth is, it’s not that simple.
To take an extreme example, for the sake of clearest illustration: The person who eats an 80% whole fruit diet (and makes up the necessary protein and fats etc in the other 20%) will probably be healthier than the person who eats a “standard American diet”, despite not practising moderation in their fruit-eating activities. The “standard American diet” has many faults, and one of those faults is how it promotes sporadic insulin spikes leading to metabolic disease.
If your breakfast is a glass of orange juice, this is a supremely “moderate” consumption, but an insulin spike is an insulin spike.
Quick sidenote: if you’re wondering why eating immoderate amounts of fruit is unlikely to cause such spikes, but a single glass of orange juice is, check out:
Which Sugars Are Healthier, And Which Are Just The Same?
Glycemic Index
The first tool in our toolbox here is glycemic index, or GI.
GI measures how much a carb-containing food raises blood glucose levels, also called blood sugar levels, but it’s just glucose that’s actually measured, bearing in mind that more complex carbs will generally get broken down to glucose.
Pure glucose has a GI of 100, and other foods are ranked from 0 to 100 based on how they compare.
Sometimes, what we do to foods changes its GI.
- Some is because it changed form, like the above example of whole fruit (low GI) vs fruit juice (high GI).
- Some is because of more “industrial” refinement processes, such as whole grain wheat (medium GI) vs white flour and white flour products (high GI)
- Some is because of other changes, like starches that were allowed to cool before being reheated (or eaten cold).
Broadly speaking, a daily average GI of 45 is considered great.
But that’s not the whole story…
Glycemic Load
Glycemic Load, or GL, takes the GI and says “ok, but how much of it was there?”, because this is often relevant information.
Refined sugar may have a high GI, but half a teaspoon of sugar in your coffee isn’t going to move your blood sugar levels as much as a glass of Coke, say—the latter simply has more sugar in, and just the same zero fiber.
GL is calculated by (grams of carbs / 100) x GI, by the way.
But it still misses some important things, so now let’s look at…
Insulin Index
Insulin Index, which does not get an abbreviation (probably because of the potentially confusing appearance of “II”), measures the rise in insulin levels, regardless of glucose levels.
This is important, because a lot of insulin response is independent of blood glucose:
- Some is because of other sugars, some some is in response to fats, and yes, even proteins.
- Some is a function of metabolic base rate.
- Some is a stress response.
- Some remains a mystery!
Another reason it’s important is that insulin drives weight gain and metabolic disorders far more than glucose.
Note: the indices of foods are calculated based on average non-diabetic response. If for example you have Type 1 Diabetes, then when you take a certain food, your rise in insulin is going to be whatever insulin you then take, because your body’s insulin response is disrupted by being too busy fighting a civil war in your pancreas.
If your diabetes is type 2, or you are prediabetic, then a lot of different things could happen depending on the stage and state of your diabetes, but the insulin index is still a very good thing to be aware of, because you want to resensitize your body to insulin, which means (barring any urgent actions for immediate management of hyper- or hypoglycemia, obviously) you want to eat foods with a low insulin index where possible.
Great! What foods have a low insulin index?
Many factors affect insulin index, but to speak in general terms:
- Whole plant foods are usually top-tier options
- Lean and/or white meats generally have lower insulin index than red and/or fatty ones
- Unprocessed is generally lower than processed
- The more solid a food is, generally the lower its insulin index compared to a less solid version of the same food (e.g. baked potatoes vs mashed potatoes; cheese vs milk, etc)
But do remember the non-food factors too! This means where possible:
- reducing/managing stress
- getting frequent exercise
- getting good sleep
- practising intermittent fasting
See for example (we promise you it’s relevant):
Fix Chronic Fatigue & Regain Your Energy, By Science
…as are (especially recommendable!) the two links we drop at the bottom of that page; do check them out if you can
Take care!
Share This Post
-
Here’s To Getting Assuredly Good Health
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.
An unusual amount of excitement in the health news world this week, with health insurance in the spotlight:
Deny, Delay, Depose?
Insurance company UnitedHealthcare, which used AI with a 90% error rate to deny insurance claims (of which, disproportionately denying insurance claims of the elderly), has come under extra public scrutiny this week for its recent-years business practices:
❝Nearly 1 in 5 insured adults experienced claim denials during a 12-month period.
Those with job-based insurance or Affordable Care Act policies ran into this problem about twice as often as those covered by Medicare or Medicaid❞
…although, the company has dramatically increased its care denials for Medicare Advantage enrollees, doubling the rate of denials as it implemented its new, automated denials process.
Anesthesiologist Dr. Brain Schmutzler noted:
❝We have a bigger issue with the insurance companies in general, who, essentially, it’s their job to make money, not to actually pay for health care❞
And in those cases where healthcare is not denied, it is often dangerously delayed, as insurance companies can stall for time to decide whether they’re going to pay or not.
One useful take-away from all of this is that if your insurance claim is denied, consider fighting it, as often they can be overturned.
Specifically, it can be good to insist on knowing who (named persons) was involved in the denial process, and their qualifications. Once upon a time, this was mostly unqualified interns, which prompted insurance companies to reverse the denial rather than admit that; nowadays it’s mostly AI, which many companies can hope will shield them from culpability—either way, fighting for one’s rights can often be successful.
Read in full: Killing of UnitedHealthcare CEO prompts flurry of stories on social media over denied insurance claims
Related: With Medical Debt Burdening Millions, a Financial Regulator Steps In to Help
Rest Easy
Health insurer Elevance Health (formerly Anthem Blue Cross Blue Shield), had last month announced plans to limit its coverage for anesthesia used in operations, whereby they would pay for only a certain amount of anesthetic, and if the procedure was still ongoing when that amount had been used, then well, you were on your own.
However, on Thursday afternoon and allegedly completely coincidentally in the wake of the Wednesday assassination of the CEO who oversaw the denial of so many health insurance claims, this decision to limit paying for anesthesia was reversed, retracted, and they are now doing their best to downplay what the proposal would have meant for anesthesiologists and patients:
Read in full: Insurance company halts plan to put time limits on coverage for anesthesia during surgery
Related: The Insider’s Guide To Making Hospital As Comfortable As Possible ← an anesthesiologist’s tips
Getting a good grip of your health
What’s the best indicator of good health when it comes to age-related health issues? It’s not BMI! Could it be blood pressure? It could, but the news presently is about grip strength.
While training to have an amazing grip (and neglecting all else) will not necessarily increase your general healthspan, having a weak or strong grip is strongly associated with, respectively, having weak or strong general health in later years.
This is because unless someone has been training very unnaturally, grip strength is a good general measure of overall muscle strength, which in turn is a good indicator of metabolic health, as well as bodily robustness.
Read in full: Handgrip strength is a reliable predictor for age-related disease and disability, finds study
Related: Resistance Is Useful! (Especially As We Get Older)
Take care!
Share This Post
-
Why is toddler milk so popular? Follow the money
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.
Toddler milk is popular and becoming more so. Just over a third of Australian toddlers drink it. Parents spend hundreds of millions of dollars on it globally. Around the world, toddler milk makes up nearly half of total formula milk sales, with a 200% growth since 2005. Growth is expected to continue.
We’re concerned about the growing popularity of toddler milk – about its nutritional content, cost, how it’s marketed, and about the impact on the health and feeding of young children. Some of us voiced our concerns on the ABC’s 7.30 program recently.
But what’s in toddler milk? How does it compare to cow’s milk? How did it become so popular?
What is toddler milk? Is it healthy?
Toddler milk is marketed as appropriate for children aged one to three years. This ultra-processed food contains:
- skim milk powder (cow, soy or goat)
- vegetable oil
- sugars (including added sugars)
- emulsifiers (to help bind the ingredients and improve the texture)
added vitamins and minerals.
Toddler milk is usually lower in calcium and protein, and higher in sugar and calories than regular cow’s milk. Depending on the brand, a serve of toddler milk can contain as much sugar as a soft drink.
Even though toddler milks have added vitamins and minerals, these are found in and better absorbed from regular foods and breastmilk. Toddlers do not need the level of nutrients found in these products if they are eating a varied diet.
Global health authorities, including the World Health Organization (WHO), and Australia’s National Health and Medical Research Council, do not recommend toddler milk for healthy toddlers.
Some children with specific metabolic or dietary medical problems might need tailored alternatives to cow’s milk. However, these products generally are not toddler milks and would be a specific product prescribed by a health-care provider.
Toddler milk is also up to four to five times more expensive than regular cow’s milk. “Premium” toddler milk (the same product, with higher levels of vitamins and minerals) is more expensive.
With the cost-of-living crisis, this means families might choose to go without other essentials to afford toddler milk.
Toddler milk is more expensive than cow’s milk and contains more sugar.
Dragana Gordic/ShutterstockHow toddler milk was invented
Toddler milk was created so infant formula companies could get around rules preventing them from advertising their infant formula.
When manufacturers claim benefits of their toddler milk, many parents assume these claimed benefits apply to infant formula (known as cross-promotion). In other words, marketing toddler milks also boosts interest in their infant formula.
Manufacturers also create brand loyalty and recognition by making the labels of their toddler milk look similar to their infant formula. For parents who used infant formula, toddler milk is positioned as the next stage in feeding.
How toddler milk became so popular
Toddler milk is heavily marketed. Parents are told toddler milk is healthy and provides extra nutrition. Marketing tells parents it will benefit their child’s growth and development, their brain function and their immune system.
Toddler milk is also presented as a solution to fussy eating, which is common in toddlers.
However, regularly drinking toddler milk could increase the risk of fussiness as it reduces opportunities for toddlers to try new foods. It’s also sweet, needs no chewing, and essentially displaces energy and nutrients that whole foods provide.
Toddler milk is said to help fussy eating, but it may make things worse.
zlikovec/ShutterstockGrowing concern
The WHO, along with public health academics, has been raising concerns about the marketing of toddler milk for years.
In Australia, moves to curb how toddler milk is promoted have gone nowhere. Toddler milk is in a category of foods that are allowed to be fortified (to have vitamins and minerals added), with no marketing restrictions. The Australian Competition & Consumer Commission also has concerns about the rise of toddler milk marketing. Despite this, there is no change in how it’s regulated.
This is in contrast to voluntary marketing restrictions in Australia for infant formula.
What needs to happen?
There is enough evidence to show the marketing of commercial milk formula, including toddler milk, influences parents and undermines child health.
So governments need to act to protect parents from this marketing, and to put child health over profits.
Public health authorities and advocates, including us, are calling for the restriction of marketing (not selling) of all formula products for infants and toddlers from birth through to age three years.
Ideally, this would be mandatory, government-enforced marketing restrictions as opposed to industry self-regulation in place currently for infant formulas.
We musn’t blame parents
Toddlers are eating more processed foods (including toddler milk) than ever because time-poor parents are seeking a convenient option to ensure their child is getting adequate nutrition.
Formula manufacturers have used this information, and created a demand for an unnecessary product.
Parents want to do the best for their toddlers, but they need to know the marketing behind toddler milks is misleading.
Toddler milk is an unnecessary, unhealthy, expensive product. Toddlers just need whole foods and breastmilk, and/or cow’s milk or a non-dairy, milk alternative.
If parents are worried about their child’s eating, they should see a health-care professional.
Anthea Rhodes, a paediatrician from Royal Children’s Hospital Melbourne and a lecturer at the University of Melbourne, co-authored this article.
Jennifer McCann, Lecturer Nutrition Sciences, Institute for Physical Activity and Nutrition, Deakin University; Karleen Gribble, Adjunct Associate Professor, School of Nursing and Midwifery, Western Sydney University, and Naomi Hull, PhD candidate, University of Sydney
This article is republished from The Conversation under a Creative Commons license. Read the original article.
Share This Post
-
How to Boost Your Metabolism When Over 50
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.
Dr. Dawn Andalon, a physiotherapist, explains the role of certain kinds of exercise in metabolism; here’s what to keep in mind:
Work with your body
Many people make the mistake of thinking that it is a somehow a battle of wills, and they must simply will their body to pick up the pace. That’s not how it works though, and while that can occasionally get short-term results, at best it’ll quickly result in exhaustion. So, instead:
- Strength training: engage in weight training 2–3 times per week; build muscle and combat bone loss too. Proper guidance from trainers familiar with older adults is recommended. Pilates (Dr. Andalon is a Pilates instructor) can also complement strength training by enhancing core stability and preventing injuries. The “building muscle” thing is important for metabolism, because muscle increases the body’s metabolic base rate.
- Protein intake: Dr. Andalon advises to consume 25–30 grams of lean protein per meal to support muscle growth and repair (again, important for the same reason as mentioned above re exercise). Dr. Andalon’s recommendation is more protein per meal than is usually advised, as it is generally held that the body cannot use more than about 20g at once.
- Sleep quality: prioritize good quality sleep, by practising good sleep hygiene, and also addressing any potential hormonal imbalances affecting sleep. If you do not get good quality sleep, your metabolism will get sluggish in an effort to encourage you to sleep more.
- Exercise to manage stress: regular walking (such as the popular 10,000 steps daily) helps manage stress and improve metabolism. Zone two cardio (low-intensity movement) also supports joint health, blood flow, and recovery—but the main issue about stress here is that if your body experiences unmanaged stress, it will try to save you from whatever is stressing you by reducing your metabolic base rate so that you can out-survive the bad thing. Which is helpful if the stressful thing is that the fruit trees got stripped by giraffes and hunting did not yield a kill, but not so helpful if the stressful thing is the holiday season.
- Hydration: your body cannot function properly without adequate hydration; water is needed (directly or indirectly) for all bodily processes, and your metabolism will also “dry up” without it.
- Antidiabetic & anti-inflammatory diet: minimize sugar intake and reduce processed foods, especially those with inflammatory refined oils (esp. canola & sunflower) and the like. This has very directly to do with your body’s energy metabolism, and as they say in computing, “garbage in; garbage out”.
For more on all of this, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
Burn! How To Boost Your Metabolism
Take care!
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
-
10 Lessons For A Healthy Mind & Body
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.
Sadia Badiei, food scientist of “Pick Up Limes” culinary fame, has advice in and out of the kitchen:
Pick up a zest for life
Here’s what she picked up, and we all can too:
- “I can’t do it… yet”: it’s never too late to adopt a growth mindset by adding “yet” to your self-doubt, focusing on progress and the possibility of improvement.
- The spotlight effect: people are generally too absorbed in their own lives to focus on you, so don’t worry too much about others’ perceptions.
- Nutrition by addition: focus on adding healthier foods to your diet rather than eliminating the less healthy ones to avoid restrictive mindsets. You can still eliminate the less healthy ones if you want to! It just shouldn’t be the primary focus. Focusing on a conceptually negative thing is rarely helpful.
- It’s ok to change: embrace change as a sign of growth and evolution, rather than seeing it as a failure or waste of time.
- The way you do one thing is the way you do everything: be mindful of how you approach small tasks, regular tasks, boring tasks, unwanted tasks—you can either create a habit of enthusiasm or a habit of suffering (it’s entirely your choice which)
- Setting goals for success: set goals based on actions you can control (inputs) rather than outcomes that are uncertain. Less “lose 10 lbs”, and more “eat fiber before starch”, for example.
- You probably can’t have it all at once: you can achieve all your dreams, but often not simultaneously; goals and desires unfold in stages over time.
- The five-year rule: before adopting a new lifestyle or habit, ask yourself if you can realistically sustain it for five years to ensure it’s not just a short-term fix. If you struggle with this prognostic, look backwards first instead. Which healthy habits have you maintained for decades, and which were you never able to make stick?
- Are you afraid or excited?: reframe fear as excitement, as both emotions share similar physical sensations and signify that you care about the outcome.
- The voice you hear most: speak kindly to yourself in self-talk to create a softer, more compassionate tone. Your subconscious is always listening, so reinforce healthy rather than unhealthy thought patterns.
For more on each of these, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
80-Year-Olds Share Their Biggest Regrets
Take care!
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
-
Younger You – by Kara Fitzgerald
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.
First, a note about the author: she is a naturopathic doctor, a qualification not recognized in most places. Nevertheless, she clearly knows a lot of stuff, and indeed has been the lead research scientist on a couple of studies, one of which was testing the protocol that would later go into this book.
Arguably, there’s a conflict of interest there, but it’s been peer reviewed and the science seems perfectly respectable. After an 8-week interventional trial, subjects enjoyed a reversal of DNA methylation (one of various possible markers of biological aging) comparable to being 3 years younger.
Where the value of this book lies is in optimizing one’s diet in positive fashion. In other words, what to include rather than what to exclude, but the “include” list is quite extensive so you’re probably not going to be reaching for a donut by the time you’ve eaten all that. In particular, she’s optimized the shopping list for ingredients that contain her DNA methylation superstars most abundantly; those nutrients being: betaine choline, curcumin, epigallocatechin gallate, quercetin, rosmarinic acid, and vitamins B9 and B12.
To make this possible, she sets out not just shopping list but also meal plans, and challenges the reader to do an 8-week intervention of our own.
Downside: it is quite exacting if you want to follow it 100%.
Bottom line: this is a very informative, science-based book. It can make you biologically younger at least by DNA methylation standards, if the rather specific diet isn’t too onerous for you.
Click here to check out Younger You, and enjoy a younger you!
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
