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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10 Ways To Lower Blood Pressure Naturally
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Increasingly many people, especially over a certain age, are taking so many medications that it precipitates a train of other medications to deal with the side effects of the previous ones. This is neither fun nor healthy. Of course, sometimes it’s a necessity, but often it’s not, so if you’d like to avoid blood pressure meds, here are some good first-line things, as recommended by Dr. Siobhan Deshauer:
No-med options
Dr. Deshauer recommends:
- Diet: follow the DASH diet by eating whole foods, lean / plant-based proteins, and reducing salt and processed foods to lower blood pressure by 5–6 points.
- Sodium reduction: limit sodium intake to 2g/day, focusing on reducing processed foods, which account for 80% of sodium consumption.
- Increase potassium intake: eat potassium-rich foods (e.g. fruit, vegetables) to lower blood pressure by 5–7 points but consult a doctor if you have kidney issues or take certain medications.
- Exercise: engage in isometric exercises like wall squats or planks, which lower systolic pressure by up to 8 points; any exercise is beneficial.
- Weight loss: lose weight (specifically: fat) if (and only if!) carrying excess fat, as each 1 kg (2.2 lbs) excess adiposity reduction can decrease blood pressure by 1 point.
- Limit alcohol: avoid consuming more than two alcoholic drinks per day, as it raises blood pressure.
- Quit smoking: stop smoking to prevent increased blood pressure and long-term vessel damage caused by nicotine.
- Improve sleep: aim for at least 6 hours of sleep per night, ideally 7–9, and seek medical advice if you suspect sleep apnea.
- Manage stress: adopt healthy stress management strategies to avoid the indirect effects of stress on blood pressure.
- Adopt a pet: pet ownership, particularly dogs, can lower blood pressure more effectively than some medications.
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:
Ideal Blood Pressure Numbers Explained
Take care!
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What’s the difference between burnout and depression?
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If your summer holiday already feels like a distant memory, you’re not alone. Burnout – a state of emotional, physical and mental exhaustion following prolonged stress – has been described in workplaces since a 5th century monastery in Egypt.
Burnout and depression can look similar and are relatively common conditions. It’s estimated that 30% of the Australian workforce is feeling some level of burnout, while almost 20% of Australians are diagnosed with depression at some point in their lives.
So what’s the difference between burnout and depression?
Burnout is marked by helplessness and depression by hopelessness. They can have different causes and should also be managed differently.
Yuri A/Shutterstock What is burnout?
The World Health Organization defines burnout as an “occupational phenomenon” resulting from excessively demanding workload pressures. While it is typically associated with the workplace, carers of children or elderly parents with demanding needs are also at risk.
Our research created a set of burnout symptoms we captured in the Sydney Burnout Measure to assist self-diagnosis and clinicians undertaking assessments. They include:
- exhaustion as the primary symptom
- brain fog (poor concentration and memory)
- difficulty finding pleasure in anything
- social withdrawal
- an unsettled mood (feeling anxious and irritable)
- impaired work performance (this may be result of other symptoms such as fatigue).
People can develop a “burning out” phase after intense work demands over only a week or two. A “burnout” stage usually follows years of unrelenting work pressure.
What is depression?
A depressive episode involves a drop in self-worth, increase in self-criticism and feelings of wanting to give up. Not everyone with these symptoms will have clinical depression, which requires a diagnosis and has an additional set of symptoms.
Clinically diagnosed depression can vary by mood, how long it lasts and whether it comes back. There are two types of clinical depression:
- melancholic depression has genetic causes, with episodes largely coming “out of the blue”
- non-melancholic depression is caused by environmental factors, often triggered by significant life events which cause a drop in self-worth.
When we created our burnout measure, we compared burnout symptoms with these two types of depression.
Burnout shares some features with melancholic depression, but they tend to be general symptoms, such as feeling a loss of pleasure, energy and concentration skills.
We found there were more similarities between burnout and non-melancholic (environmental) depression. This included a lack of motivation and difficulties sleeping or being cheered up, perhaps reflecting the fact both have environmental causes.
Looking for the root cause
The differences between burnout and depression become clearer when we look at why they happen.
Personality comes into play. Our work suggests a trait like perfectionism puts people at a much higher risk of burnout. But they may be less likely to become depressed as they tend to avoid stressful events and keep things under control.
Excessive workloads can contribute to burnout. tartanparty/Shutterstock Those with burnout generally feel overwhelmed by demands or deadlines they can’t meet, creating a sense of helplessness.
On the other hand, those with depression report lowered self-esteem. So rather than helpless they feel that they and their future is hopeless.
However it is not uncommon for someone to experience both burnout and depression at once. For example, a boss may place excessive work demands on an employee, putting them at risk of burnout. At the same time, the employer may also humiliate that employee and contribute to an episode of non-melancholic depression.
What can you do?
A principal strategy in managing burnout is identifying the contributing stressors. For many people, this is the workplace. Taking a break, even a short one, or scheduling some time off can help.
Australians now have the right to disconnect, meaning they don’t have to answer work phone calls or emails after hours. Setting boundaries can help separate home and work life.
Burnout can be also be caused by compromised work roles, work insecurity or inequity. More broadly, a dictatorial organisational structure can make employees feel devalued. In the workplace, environmental factors, such as excessive noise, can be a contributor. Addressing these factors can help prevent burnout.
As for managing symptoms, the monks had the right idea. Strenuous exercise, meditation and mindfulness are effective ways to deal with everyday stress.
Regular exercise can help manage symptoms of burnout. alexei_tm/Shutterstock Deeper contributing factors, including traits such as perfectionism, should be managed by a skilled clinical psychologist.
For melancholic depression, clinicians will often recommend antidepressant medication.
For non-melancholic depression, clinicians will help address and manage triggers that are the root cause. Others will benefit from antidepressants or formal psychotherapy.
While misdiagnosis between depression and burnout can occur, burnout can mimic other medical conditions such as anemia or hypothyroidism.
For the right diagnosis, it’s best to speak to your doctor or clinician who should seek to obtain a sense of “the whole picture”. Only then, once a burnout diagnosis has been affirmed and other possible causes ruled out, should effective support strategies be put in place.
If this article has raised issues for you, or if you’re concerned about someone you know, call Lifeline on 13 11 14.
Correction: This article originally stated that depression is marked by helplessness and burnout by hopelessness, when in fact it is vice versa. This has been amended.
Gordon Parker, Scientia Professor of Psychiatry, UNSW Sydney
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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The Pegan Diet – by Dr. Mark Hyman
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First things first: the title of the book is a little misleading. “Pegan” is a portmanteau of “paleo” and “vegan”, making it sound like it will be appropriate for both of those dietary practices. Instead:
- Dr. Hyman offers advice about eating the right grains and legumes (inappropriate for a paleo diet)
- He also offers such advice as “be picky about poultry, eggs, and fish”, and “avoid dairy—mostly” (inappropriate for a vegan diet).
So, since his paleo vegan diet is neither paleo nor vegan, what actually is it?
It’s a whole foods diet that encourages the enjoyment of a lot of plants, and discretion with regard to the quality of animal products.
It’s a very respectable approach to eating, even if it didn’t live up to the title.
The style is somewhat sensationalist, while nevertheless including plenty of actual science in there too—so the content is good, even if the presentation isn’t what this reviewer would prefer.
He has recipes; they can be a little fancy (e.g. “matcha poppy bread with rose water glaze”) which may not be to everyone’s taste, but they are healthy.
Bottom line: the content is good; the style you may love or hate, and again, don’t be misled by the title.
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How to keep your teeth young
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How to keep your teeth young
The association between aging and teeth is so well-established that it’s entered popular idiom, “too long in the tooth”, and when it comes to visual representations, false teeth are well-associated with old age.
And yet, avoiding such outcomes does not get anywhere near so much attention as, say, avoiding wrinkles or hair loss.
At 10almonds, we’ve covered general dental health before, in a three-part series:
- Toothpastes & Mouthwashes: Which Help And Which Harm?
- Flossing, Better (And Easier!)
- Less Common Oral Hygiene Options
Today, we’re going to be looking specifically at keeping our teeth young. What if you have lost your teeth already? Well, gum health remains important, and it’s foundational for everyone, so…
Look after your gums first and last
Hollywood’s most “perfect” whites would be nothing without the gums holding them in place. So, set aside the cosmetic whitening products that often harm gums (anything containing bleach / hydrogen peroxide, is generally a bad idea), andinstead focus on your gums.
As for avoiding gum disease (periodontitis)?
❝In conclusion, periodontitis might enhance the association of biological aging with all-cause mortality in middle-aged and older adults.
Hence, maintaining and enhancing periodontal health is expected to become an intervention to slow aging and extend life span.❞
Source: Does Periodontitis Affect the Association of Biological Aging with Mortality?
Ways to look after gum health include the obvious “floss” and “brush often” and “use fluoride toothpaste”, along with other options we covered in our “Less Common Oral Hygiene Options” article above.
Also important: don’t smoke. It is bad for everything, and this is no exception.
We expect we probably don’t have many subscribers who smoke, but if you do, please consider making quitting a priority.
See also: Smoking, Gum Disease, and Tooth Loss
Consider supplementing with collagen
Everyone’s all about the calcium and vitamin D for bones (and teeth), but a large part of the mass of both is actually collagen. And unlike calcium, which most people not living in a food desert get plenty of, or vitamin D, which is one of the most popular supplements around, collagen is something that gets depleted as we get older. We’ve written about its importance for bones:
We Are Such Stuff As Fish Are Made Of—Collagen’s benefits are more than skin deep
And as for its role in combatting gum disease and tooth loss:
Nanoscale Dynamics of Streptococcal Adhesion to AGE-Modified Collagen
By the way, that “AGE” there isn’t about chronological age; it’s about advanced glycation end-products. Those are also something you can and should avoid:
A different kind of “spit and polish”
We imagine you have the “polishing” part in hand; that’s tooth-brushing, of course. But spit?
Saliva is hugely important for our oral health, but it’s not something most of us think about a lot. For example, you might not have known (or might have known but not thought much about) that many common medications affect our saliva, including many blood pressure medications and antidepressants:
Impact of ageing and drug consumption on oral health
Because there are so many possibilities, this is the kind of thing to check with your pharmacist or doctor about. But as a rule, if you take a medication whose side-effects include “dry mouth”, this might be you.
Here’s a really useful (academic) article that covers what drugs cause this, how to diagnose it, and what can be done about it:
Hyposalivation in Elderly Patients
If something’s difficult, find a way to make it easier
Sometimes, as we get older, some things that used to be easy, aren’t. We can lose strength, coordination, manual dexterity, memory, attention, and more. Obviously, we try not to, and do what we can to keep ourselves in good health.
But, if you do have some disability that makes for example brushing and/or flossing difficult to do consistently and/or well, consider talking to your doctor to see if there are assistive devices that can help, or some other kind of support that could allow you to do what you need to.
There’s never any shame in getting help if we need it.
Take care!
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Beetroot vs Cucumber – Which is Healthier?
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Our Verdict
When comparing beetroot to cucumber, we picked the beetroot.
Why?
While they’re both mostly-water vegetables that can go in salads, soups, and sauces, they have some notable differences:
In terms of macros, beetroot has nearly 3x the carbs and/but also nearly 6x the fiber, so we say beetroot wins this category.
On the vitamins front, beetroot has more of vitamins B1, B2, B3, B6, B7, B9, C, and E, while cucumber has more of vitamins A, B5, and K. In short, a clear win for beetroot.
In the category of minerals, beetroot has more copper, iron, magnesium, manganese, phosphorus, potassium, selenium, and zinc, while cucumber is not richer in any minerals.
When it comes to beneficial phytochemicals, both have good things to offer, though we say beetroot has more. Notably, cucumber extract beats glucosamine and chondroitin for reducing joint inflammation, at 1/135th of the dose. On the other hand, beetroot’s phytochemical benefits are so numerous we’ll not list them here, and just recommend checking out the link below!
In short, a win in all categories for beetroot, but cucumbers are great too, so by all means enjoy either or both!
Want to learn more?
You might like to read:
Beetroot For More Than Just Your Blood Pressure
Enjoy!
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A Fresh Take On Hypothyroidism
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The Three Rs To Boost Thyroid-Related Energy Levels
This is Dr. Izabella Wentz. She’s a doctor of pharmacology, and after her own diagnosis with Hashimoto’s thyroiditis, she has taken it up as her personal goal to educate others on managing hypothyroidism.
Dr. Wentz is also trained in functional medicine through The Institute for Functional Medicine, Kalish Functional Medicine, and the American Academy of Anti-Aging Medicine. She is a Fellow of the American Society of Consultant Pharmacists, and holds certifications in Medication Therapy Management as well as Advanced Diabetes Care through the American Pharmacists Association. In 2013, she received the Excellence in Innovation Award from the Illinois Pharmacists Association.
Dr. Wentz’s mission
Dr. Wentz was disenchanted by the general medical response to hypothyroidism in three main ways. She tells us:
- Thyroid patients are not diagnosed appropriately.
- For this, she criticises over-reliance on TSH tests that aren’t a reliable marker of thyroid function, especially if you have Hashimoto’s.
- Patients should be better optimized on their medications.
- For this, she criticizes many prescribed drugs that are actually pro-drugs*, that don’t get converted adequately if you have an underactive thyroid.
- Lifestyle interventions are often ignored by mainstream medicine.
- Medicines are great; they truly are. But medicating without adjusting lifestyle can be like painting over the cracks in a crumbling building.
*a “pro-drug” is what it’s called when the drug we take is not the actual drug the body needs, but is a precursor that will get converted to that actual drug we need, inside our body—usually by the liver, but not always. An example in this case is T4, which by definition is a pro-drug and won’t always get correctly converted to the T3 that a thyroid patient needs.
Well that does indeed sound worthy of criticism. But what does she advise instead?
First, she recommends a different diagnostic tool
Instead of (or at least, in addition to) TSH tests, she advises to ask for TPO tests (thyroid peroxidase), and a test for Tg antibodies (thyroglobulin). She says these are elevated for many years before a change in TSH is seen.
Next, identify the root cause and triggers
These can differ from person to person, but in countries that add iodine to salt, that’s often a big factor. And while gluten may or may not be a factor, there’s a strong correlation between celiac disease and Hashimoto’s disease, so it is worth checking too. Same goes for lactose.
By “checking”, here we mean testing eliminating it and seeing whether it makes a difference to energy levels—this can be slow, though, so give it time! It is best to do this under the guidance of a specialist if you can, of course.
Next, get to work on repairing your insides.
Remember we said “this can be slow”? It’s because your insides won’t necessarily bounce back immediately from whatever they’ve been suffering from for what’s likely many years. But, better late than never, and the time will pass anyway, so might as well get going on it.
For this, she recommends a gut-healthy diet with specific dietary interventions for hypothyroidism. Rather than repeat ourselves unduly here, we’ll link to a couple of previous articles of ours, as her recommendations match these:
She also recommends regular blood testing to see if you need supplementary TSH, TPO antibodies, and T3 and T4 hormones—as well as vitamin B12.
Short version
After diagnosis, she recommends the three Rs:
- Remove the causes and triggers of your hypothyroidism, so far as possible
- Repair the damage caused to your body, especially your gut
- Replace the thyroid hormones and related things in which your body has become deficient
Learn more
If you’d like to learn more about this, she offers a resource page, with resources ranging from on-screen information, to books you can get, to links to hook you up with blood tests if you need them, as well as recommended supplements to consider.
She also has a blog, which has an interesting relevant article added weekly.
Enjoy, and take care of yourself!
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- Thyroid patients are not diagnosed appropriately.
