The Magic of L-theanine

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All The Benefits Of Caffeine And More, Without The Drawbacks? What’s The Catch?

It just takes one extra supplement.

For many of us, our morning brew is practically a ritual, but caffeine can also cause all kinds of problems ranging from caffeine jitters to caffeine crashes to caffeine addiction and withdrawal. Surely, something could be better?

Well, yes it could! You doubtlessly know about green tea’s antioxidant properties, but its amino acid, l-theanine (which can be taken as a supplement with coffee, if you don’t enjoy green tea) has so much more to offer:

  • L-theanine has been found to reduce stress responses—and let’s face it, when we most want/need a coffee is often when facing stress
  • It also reduces anxiety, making it a very safe “downer” without the problems of, for example, alcohol—or other potentially addictive substances
  • It’s far more than just that, though! Paradoxically, l-theanine also improves alertness (what other calming things promote alertness? Not so many)
  • Part of its trick is that it also improves accuracy—whereas stimulants like caffeine may produce a twitchy, jumpy, responsiveness, l-theanine’s signature effect is a calm state of sharp readiness. Caffeine works by stimulating the adrenal gland and increasing blood pressure, while simultaneously blocking adenosine receptors so that your body doesn’t notice its own tiredness—which is why you’re likely to crash later, when the tiredness that had been masked, all hits at once. Instead, l-theanine taken with caffeine acts as a moderator of that, making for a longer, gentler curve. In terms of subjective experience, what this can mean for many people is: no more caffeine jitters!
  • All this means that while l-theanine can boost all kinds of cognitive function, including alertness and accuracy, many like to take in the evening as it can also promote a good night’s sleep, ready to be at your best the next day.
  • How much to take? 200mg is a commonly used dosage, which in supplement terms is usually a single capsule. A lot easier to take than the 40 cups of green tea that this dosage would otherwise be!

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  • How Useful Is Hydrotherapy?

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    Hyyyyyyydromatic…

    Hydrotherapy is a very broad term, and refers to any (external) use of water as part of a physical therapy. Today we’re going to look at some of the top ways this can be beneficial—maybe you’ll know them all already, but maybe there’s something you hadn’t thought about or done decently; let’s find out!

    Notwithstanding the vague nature of the umbrella term, some brave researchers have done a lot of work to bring us lots of information about what works and what doesn’t, so we’ll be using this to guide us today. For example:

    Scientific Evidence-Based Effects of Hydrotherapy on Various Systems of the Body

    Swimming (and similar)

    An obvious one, this can for most people be a very good full-body exercise, that’s exactly as strenuous (or not) as you want/need it to be.

    It can be cardio, it can be resistance, it can be endurance, it can be high-intensity interval training, it can be mobility work, it can be just support for an aching body that gets to enjoy being in the closest to zero-gravity we can get without being in freefall or in space.

    See also: How To Do HIIT (Without Wrecking Your Body)

    Depending on what’s available for you locally (pool with a shallow area, for example), it can also be a place to do some exercises normally performed on land, but with your weight being partially supported (and as a counterpoint, a little resistance added to movement), and no meaningful risk of falling.

    Tip: check out your local facilities, to see if they offer water aerobics classes; because the water necessitates slow movement, this can look a lot like tai chi to watch, but it’s great for mobility and balance.

    Water circuit therapy

    This isn’t circuit training! Rather, it’s a mixture of thermo- and cryotherapy, that is to say, alternating warm and cold water immersion. This can also be interspersed with the use of a sauna, of course.

    See also:

    this last one is about thermal shock-mediated hormesis, which sounds drastic, but it’s what we’re doing here with the hot and cold, and it’s good for most people!

    Pain relief

    Most of the research for this has to do with childbirth pain rather than, for example, back pain, but the science is promising:

    A systematic meta-thematic synthesis to examine the views and experiences of women following water immersion during labour and waterbirth

    Post-exercise recovery

    It can be tempting to sink into a hot bath, or at least enjoy a good hot shower, after strenuous exercise. But does it help recovery too? The answer is probably yes:

    Effect of hot water immersion on acute physiological responses following resistance exercise

    For more on that (and other means of improving post-exercise recovery), check out our previous main feature:

    How To Speed Up Recovery After A Workout (According To Actual Science)

    Take care!

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  • Broccoli vs Asparagus – Which is Healthier?

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    Our Verdict

    When comparing broccoli to asparagus, we picked the broccoli.

    Why?

    Both are great! But broccoli does distinguish itself:

    In terms of macros, broccoli has slightly more protein, carbs, and fiber. The two vegetables have the same glycemic index. We’ll call this a slight win for broccoli based mainly on the higher fiber, but it’s not by a huge amount.

    When it comes to vitamins, broccoli has more of vitamins B5, B6, B9, C, K, and choline, whereas asparagus has more of vitamins A, B1, B2, B3, and E. This would already be a 6:5 marginal win for broccoli, but it’s worth bearing in mind that broccoli’s margins are greater, especially with broccoli having around 15x the amount of vitamin C. So, a clear win for broccoli, respectable as asparagus may be.

    In the category of minerals, broccoli has more calcium, magnesium, manganese, phosphorus, potassium, and selenium, while asparagus boasts more copper, iron, and zinc. A 6:3 win for broccoli here.

    Both vegetables also contain generous amounts of antioxidant polyphenols and other beneficial phytochemicals, often a little different from each other, so that’s a case for enjoying both.

    Still, if you’re going to pick just one, we recommend the broccoli!

    Want to learn more?

    You might like to read:

    Take care!

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  • The Many Faces Of Cosmetic Surgery

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    Cosmetic Surgery: What’s The Truth?

    In Tuesday’s newsletter, we asked you your opinion on elective cosmetic surgeries, and got the above-depicted, below-described, set of responses:

    • About 48% said “Everyone should be able to get what they want, assuming informed consent”
    • About 28% said “It can ease discomfort to bring features more in line with normalcy”
    • 15% said “They should be available in the case of extreme disfigurement only”
    • 10% said “No elective cosmetic surgery should ever be performed; needless danger”

    Well, there was a clear gradient of responses there! Not so polarizing as we might have expected, but still enough dissent for discussion

    So what does the science say?

    The risks of cosmetic surgery outweigh the benefits: True or False?

    False, subjectively (but this is important).

    You may be wondering: how is science subjective?

    And the answer is: the science is not subjective, but people’s cost:worth calculations are. What’s worth it to one person absolutely may not be worth it to another. Which means: for those for whom it wouldn’t be worth it, they are usually the people who will not choose the elective surgery.

    Let’s look at some numbers (specifically, regret rates for various surgeries, elective/cosmetic or otherwise):

    • Regret rate for elective cosmetic surgery in general: 20%
    • Regret rate for knee replacement (i.e., not cosmetic): 17.1%
    • Regret rate for hip replacement (i.e., not cosmetic): 4.8%
    • Regret rate for gender-affirming surgeries (for transgender patients): 1%

    So we can see, elective surgeries have an 80–99% satisfaction rate, depending on what they are. In comparison, the two joint replacements we mentioned have a 82.9–95.2% satisfaction rate. Not too dissimilar, taken in aggregate!

    In other words: if a person has studied the risks and benefits of a surgery and decides to go ahead, they’re probably going to be happy with the results, and for them, the benefits will have outweighed the risks.

    Sources for the above numbers, by the way:

    But it’s just a vanity; therapy is what’s needed instead: True or False?

    False, generally. True, sometimes. Whatever the reasons for why someone feels the way they do about their appearance—whether their face got burned in a fire or they just have triple-J cups that they’d like reduced, it’s generally something they’ve already done a lot of thinking about. Nevertheless, it does also sometimes happen that it’s a case of someone hoping it’ll be the magical solution, when in reality something else is also needed.

    How to know the difference? One factor is whether the surgery is “type change” or “restorative”, and both have their pros and cons.

    • In “type change” (e.g. rhinoplasty), more psychological adjustment is needed, but when it’s all over, the person has a new nose and, statistically speaking, is usually happy with it.
    • In “restorative” (e.g. facelift), less psychological adjustment is needed (as it’s just a return to a previous state), so a person will usually be happy quickly, but ultimately it is merely “kicking the can down the road” if the underlying problem is “fear of aging”, for example. In such a case, likely talking therapy would be beneficial—whether in place of, or alongside, cosmetic surgery.

    Here’s an interesting paper on that; the sample sizes are small, but the discussion about the ideas at hand is a worthwhile read:

    Does cosmetic surgery improve psychosocial wellbeing?

    Some people will never be happy no matter how many surgeries they get: True or False?

    True! We’re going to refer to the above paper again for this one. In particular, here’s what it said about one group for whom surgeries will not usually be helpful:

    ❝There is a particular subgroup of people who appear to respond poorly to cosmetic procedures. These are people with the psychiatric disorder known as “body dysmorphic disorder” (BDD). BDD is characterised by a preoccupation with an objectively absent or minimal deformity that causes clinically significant distress or impairment in social, occupational, or other areas of functioning.

    For several reasons, it is important to recognise BDD in cosmetic surgery settings:

    Firstly, it appears that cosmetic procedures are rarely beneficial for these people. Most patients with BDD who have had a cosmetic procedure report that it was unsatisfactory and did not diminish concerns about their appearance.

    Secondly, BDD is a treatable disorder. Serotonin-reuptake inhibitors and cognitive behaviour therapy have been shown to be effective in about two-thirds of patients with BDD❞

    ~ Dr. David Castle et al. (lightly edited for brevity)

    Which is a big difference compared to, for example, someone having triple-J breasts that need reducing, or the wrong genitals for their gender, or a face whose features are distinct outliers.

    Whether that’s a reason people with BDD shouldn’t be able to get it is an ethical question rather than a scientific one, so we’ll not try to address that with science.

    After all, many people (in general) will try to fix their woes with a haircut, a tattoo, or even a new sportscar, and those might sometimes be bad decisions, but they are still the person’s decision to make.

    And even so, there can be protectionist laws/regulations that may provide a speed-bump, for example:

    Thinking about cosmetic surgery? New standards will force providers to tell you the risks and consider if you’re actually suitable

    Take care!

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  • Senior Meetup Groups Combating Loneliness

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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

    “I would like to read more on loneliness, meetup group’s for seniors. Thank you”

    Well, 10almonds is an international newsletter, so it’s hard for us to advise about (necessarily: local) meetup groups!

    But a very popular resource for connecting to your local community is Nextdoor, which operates throughout the US, Canada, Australia, and large parts of Europe including the UK.

    In their own words:

    Get the most out of your neighborhood with Nextdoor

    It’s where communities come together to greet newcomers, exchange recommendations, and read the latest local news. Where neighbors support local businesses and get updates from public agencies. Where neighbors borrow tools and sell couches. It’s how to get the most out of everything nearby. Welcome, neighbor.

    Curious? Click here to check it out and see if it’s of interest to you

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  • 5 Things You Can Change About Your Personality (But: Should You?)

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    There are many personality-typing systems that, with varying degrees of validity*, aim to describe a person’s personality.

    *and often pseudoscience:

    • sometimes obviously so like astrology
    • sometimes dressed up in clinical words like the Meyers-Briggs
    • sometimes openly, per “this is not science but you may find it useful to frame things this way”, like the Enneagram

    There is currently one kind of personality-typing system (with some minor variations) that is used in the actual field of clinical psychology, specifically under the umbrella of “trait theory”, and that is…

    The “Big Five” personality traits

    Also called the OCEAN or CANOE model, based on its 5 components:

    • openness to experience: inventive/curious rather than consistent/cautious
    • conscientiousness: efficient/organized rather than extravagant/careless
    • extroversion: outgoing/energetic rather than solitary/reserved
    • agreeableness: friendly/compassionate rather than critical/judgmental
    • neuroticism: sensitive/nervous rather than resilient/confident

    The latter (neuroticism) is not to be confused with neurosis, which is very different and beyond the scope of today’s article.

    Note that some of these seem more positive/negative than others at a glance, but really, any of these could be a virtue or a vice depending on specifics or extremity.

    For scientific reference, here’s an example paper:

    The Big Five Personality Factors and Personal Values

    Quick self-assessment

    There are of course many lengthy questionnaires for this, but in the interests of expediency:

    Take a moment to rate yourself as honestly as you can, on a scale of 1–10, for each of those components, with 10 being highest for the named trait.

    For example, this writer gives herself: O7, C6, E3, A8, N2 (in other words I’d say I’m fairly open, moderately conscientious, on the reserved side, quite agreeable, and quite resilient)

    Now, put your rating aside (in your phone’s notes app is fine, if you hadn’t written it down already) and forget about it for the moment, because we want you to do the next exercise from scratch.

    Who would you be, at your best?

    Now imagine your perfect idealized self, the best you could ever be, with no constraints.

    Take a moment to rate your idealized self’s personality, on a scale of 1–10, for each of those components, with 10 being highest for the named trait.

    For example, this writer picks: O9, C10, E5, A8, N1.

    Maybe this, or maybe your own idealized self’s personality, will surprise you. That some traits might already be perfect for you already; others might just be nudged a little here or there; maybe there’s some big change you’d like. Chances are you didn’t go for a string of 10s or 1s (though if you did, you do you; there are no wrong answers here as this one is about your preferences).

    We become who we practice being

    There are some aspects of personality that can naturally change with age. For example:

    • confidence/resilience will usually gradually increase with age due to life experience (politely overlook teenagers’ bravado; they are usually a bundle of nerves inside, resulting in the overcompensatory displays of confidence)
    • openness to experience may decrease with age, as we can get into a rut of thinking/acting a certain way, and/or simply consciously decide that our position on something is already complete and does not need revision.

    But, we can decide for ourselves how to nudge our “Big Five” traits, for example:

    1. We can make a point of seeking out new experiences, and considering new ideas, or develop strategies for reining ourselves in
    2. We can use systems to improve our organization, or go out of our way to introduce a little well-placed chaos
    3. We can “put ourselves out there” socially, or make the decision to decline more social invitations because we simply don’t want to
    4. We can make a habit of thinking kindly of others and ourselves, or we can consciously detach ourselves and look on the cynical side more
    5. We can build on our strengths and eliminate our weaknesses, or lean into uncomfortable emotions

    Some of those may provoke a “why would anyone want to…?” response, but the truth is we are all different. An artist and a police officer may have very different goals for who they want to be as a person, for example.

    Interventions to change personality can and do work:

    A systematic review of personality trait change through intervention

    There are many ways to go about “being the change we want to see” in ourselves, and yes there can be a degree of “fake it until you make it” if that works for you, but it doesn’t have to be so. It can also simply be a matter of setting yourself reminders about the things that are most important to you.

    Writer’s example: pinned above my digital workspace I have a note from my late beloved, written just under a week before death. The final line reads, “keep being the good person that you are” (on a human level, the whole note is uplifting and soothing to me and makes me smile and remember the love we shared; or to put it in clinical terms, it promotes high agreeableness, low neuroticism).

    Other examples could be a daily practice of gratitude (promotes lower neuroticism), or going out of your way to speak to your neighbors (promotes higher extraversion), signing up for a new educational course (promotes higher openness) or downloading a budgeting app (promotes higher conscientiousness).

    In short: be the person you want to be, and be that person deliberately, because you can.

    Some resources that may help for each of the 5 traits:

    1. Curiosity Kills The Neurodegeneration
    2. How (And Why) To Train Your Pre-Frontal Cortex
    3. How To Beat Loneliness & Isolation
    4. Optimism Seriously Increases Longevity!
    5. Building Psychological Resilience (Without Undue Hardship)

    Take care!

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  • Pumpkin Seeds vs Watermelon Seeds – Which is Healthier?

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    Our Verdict

    When comparing pumpkin seeds to watermelon seeds, we picked the watermelon.

    Why?

    Starting with the macros: pumpkin seeds have a lot more carbs, while watermelon seeds have a lot more protein, despite pumpkin seeds being famous for such. They’re about equal on fiber. In terms of fats, watermelon seeds are higher in fats, and yes, these are healthy fats, mostly polyunsaturated.

    When it comes to vitamins, pumpkin seeds are marginally higher in vitamins A and C, while watermelon seeds are a lot higher in vitamins B1, B2, B3, B5, B6, and B9. An easy win for watermelon seeds here.

    In the category of minerals, despite being famous for zinc, pumpkin seeds are higher only in potassium, while watermelon seeds are higher in iron, magnesium, manganese, and phosphorus; the two seeds are equal on calcium, copper, and zinc. Another win for watermelon seeds.

    In short, enjoy both, but watermelon has more to offer. Of course, if buying just the seeds and not the whole fruit, it’s generally easier to find pumpkin seeds than watermelon seeds, so do bear in mind that pumpkin seeds’ second place isn’t that bad here—it’s just a case of a very nutritious food looking bad by standing next to an even better one.

    Want to learn more?

    You might like to read:

    Seed Saving Secrets – by Alice Mirren

    Take care!

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