Huperzine A: A Natural Nootropic
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Huperzine A: A Natural Nootropic
Huperzine A is a compound, specifically a naturally occurring sesquiterpene alkaloid, that functions as an acetylcholinesterase inhibitor. If that seems like a bunch of big words, don’t worry, we’ll translate in a moment.
First, a nod to its origins: it is found in certain kinds of firmoss, especially the “toothed clubmoss”, Huperzia serrata, which grows in many Asian countries.
What’s an acetylcholinesterase inhibitor?
Let’s do this step-by-step:
- An acetylcholinesterase inhibitor is a compound that inhibits acetylcholinesterase.
- Acetylcholinesterase is an enzyme that catalyzes (speeds up) the breakdown of acetylcholine.
- Acetylcholine is a neurotransmitter; it’s an ester of acetic acid and choline.
- This is the main neurotransmitter of the parasympathetic nervous system, and is also heavily involved in cognitive functions including memory and creative thinking.
What this means: if you take an acetylcholinesterase inhibitor like huperzine A, it will inhibit acetylcholinesterase, meaning you will have more acetylcholine to work with. That’s good.
What can I expect from it?
Huperzine A has been well-studied for a while, mostly for the prevention and treatment of Alzheimer’s disease:
- New insights into huperzine A for the treatment of Alzheimer’s disease
- Huperzine A: Is it an Effective Disease-Modifying Drug for Alzheimer’s Disease?
- Huperzine A and Its Neuroprotective Molecular Signaling in Alzheimer’s Disease
However, research has suggested that huperzine A is much better as a prevention than a treatment:
❝A central event in the pathogenesis of Alzheimer’s disease (AD) is the accumulation of senile plaques composed of aggregated amyloid-β (Aβ) peptides.
Ex vivo electrophysiological experiments showed that 10 μM of Aβ1-40 significantly decreased the effect of the AChE inhibitor huperzine A on the synaptic potential parameters. ❞
~ Dr. Irina Zueva
In other words: the answer to the titular question is “Yes, yes it can”
And, to translate Dr. Zueva’s words into simple English:
- People with Alzheimer’s have amyloid-β plaque in their brains
- That plaque reduces the effectiveness of huperzine A
So, what if we take it in advance? That works much better:
❝Pre-treatment with [huperzine A] at concentrations of 50, 100, and 150 µg/mL completely inhibited the secretion of PGE2, TNF-α, IL-6, and IL-1β compared to post-treatment with [huperzine A].
This suggests that prophylactic treatment is better than post-inflammation treatment. ❞
~ Dr. Thu Kim Dang
Source: Anti-neuroinflammatory effects of alkaloid-enriched extract from Huperzia serrata
As you may know, neuroinflammation is a big part of Alzheimer’s pathology, so we want to keep that down. The above research suggests we should do that sooner rather than later.
Aside from holding off dementia, can it improve memory now, too?
There’s been a lot less research done into this (medicine is generally more concerned with preventing/treating disease, than improving the health of healthy people), but there is some:
^This is a small (n=68) old (1999) study for which the full paper has mysteriously disappeared and we only get to see the abstract. It gave favorable results, though.
The effects of huperzine A and IDRA 21 on visual recognition memory in young macaques
^This, like most non-dementia research into HupA, is an animal study. But we chose to spotlight this one because, unlike most of the studies, it did not chemically lobotomize the animals first; they were and remained healthy. That said, huperzine A improved the memory scores most for the monkeys that performed worst without it initially.
Where can I get it?
As ever, we don’t sell it, but here’s an example product on Amazon for your convenience
Enjoy!
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Which Tea Is Best, By Science?
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What kind of tea is best for the health?
It’s popular knowledge that tea is a healthful drink, and green tea tends to get the popular credit for “healthiest”.
Is that accurate? It depends on what you’re looking for…
Black
Its strong flavor packs in lots of polyphenols, often more than other kinds of tea. This brings some great benefits:
As well as effects beyond the obvious:
…and its cardioprotective benefits aren’t just about lowering blood pressure; it improves triglyceride levels as well as improving the LDL to HDL ratio:
The effect of black tea on risk factors of cardiovascular disease in a normal population
Finally (we could say more, but we only have so much room), black tea usually has the highest caffeine content, compared to other teas.
That’s good or bad depending on your own physiology and preferences, of course.
White
White tea hasn’t been processed as much as other kinds, so this one keeps more of its antioxidants, but that doesn’t mean it comes out on top; in this study of 30 teas, the white tea options ranked in the mid-to-low 20s:
White tea is also unusual in its relatively high fluoride content, which is consider a good thing:
White tea: A contributor to oral health
In case you were wondering about the safety of that…
Water Fluoridation: Is It Safe, And How Much Is Too Much?
Green
Green tea ranks almost as high as black tea, on average, for polyphenols.
Its antioxidant powers have given it a considerable anti-cancer potential, too:
- Green tea consumption and breast cancer risk or recurrence: a meta-analysis
- Green tea consumption and prostate cancer risk: a prospective study
…and many others, but you get the idea. Notably:
Green Tea Catechins: Nature’s Way of Preventing and Treating Cancer
…or to expand on that:
About green tea’s much higher levels of catechins, they also have a neuroprotective effect:
Green tea of course is also a great source of l-theanine, which we could write a whole main feature about, and we did:
Red
Also called “rooibos” or (literally translated from Afrikaans to English) “redbush”, it’s quite special in that despite being a “true tea” botanically and containing many of the same phytochemicals as the other teas, it has no caffeine.
There’s not nearly as much research for this as green tea, but here’s one that stood out:
However, in the search for the perfect cup of tea (in terms of phytochemical content), another set of researchers found:
❝The optimal cup was identified as sample steeped for 10 min or longer. The rooibos consumers did not consume it sufficiently, nor steeped it long enough. ❞
Read in full: Rooibos herbal tea: an optimal cup and its consumers
Bottom line
Black, white, green, and red teas all have their benefits, and ultimately the best one for you will probably be the one you enjoy drinking, and thus drink more of.
If trying to choose though, we offer the following summary:
- 🖤 Black tea: best for total beneficial phytochemicals
- 🤍 White tea:best for your oral health
- 💚 Green tea: best for your brain
- ❤️ Red tea: best if you want naturally caffeine-free
Enjoy!
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How Not To Die – by Dr. Michael Greger
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We previously reviewed this book some years ago, but we’re revisiting it now because:
- It really is a book that should be in every healthspan-enjoyer’s collection
- Our book reviews back then were not as comprehensive as now (though we still generally try to fit into the “it takes about one minute to read this review” idea, sometimes we’ll spend a little extra time).
Dr. Greger (of “Dr. Greger’s Daily Dozen” fame) outlines for us in cold hard facts and stats what’s most likely to be our cause of death. While this is not a cheery premise for a book, he then sets out to work back from there—what could have prevented those specific things?
Thus, while the book doesn’t confer immortality (the title is not “how to not die”, after all), it does teach us how not to die—i.e, from heart disease, lung diseases, brain diseases, digestive cancers, infections, diabetes, high blood pressure, liver disease, blood cancers, kidney disease, breast cancer, suicidal depression, prostate cancer, Parkinson’s disease, and even iatrogenic causes.
This it does with a lot of solid science, explained for the layperson, and/but without holding back when it comes to big words, and a lot of them, at that. If you want to add in daily exercises, just lifting the book could be a start; weighing in at 678 pages, it’s an information-dense tome that’s more likely to be sifted through than read cover-to-cover.
The style is thus dense science somewhat editorialized for lay readability, and well-evidenced with around 3,000 citations. That’s not a typo; there are 178 pages of bibliography at the back with about 15–20 scientific references per page.
In terms of practical use, he does also devote chapters to that, it’s not just all textbook. Indeed, he discusses the reasonings behind the items, portion sizes, and quantities of his “daily dozen” foods, so that the reader will understand how much bang-for-buck they deliver, and then it’ll seem a lot less like an arbitrary list, and more likely to be adopted and maintained.
Bottom line: if you care about not getting life-threatening illnesses (which at the end of the day, come to most people at some point), then this book is a must-read.
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Monosodium Glutamate: Sinless Flavor-Enhancer Or Terrible Health Risk?
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What’s The Deal With MSG?
There are a lot of popular beliefs about MSG. Is there a grain of truth, or should we take them with a grain of salt? We’ll leap straight into myth-busting:
MSG is high in salt
True (technically) False (practically)
- MSG is a salt (a monosodium salt of L-glutamic acid), but to call it “full of salt” in practical terms is like calling coffee “full of fruit”. (Coffee beans are botanically fruit)
- It does contain sodium, though which is what the S stands for!
- We talked previously about how MSG’s sodium content is much lower than that of (table) salt. Specifically, it’s about one third of that of sodium chloride (e.g. table salt).
MSG triggers gluten sensitivity
False!
Or at least, because this kind of absolute negative is hard to prove in science, what we can say categorically is: it does not contain gluten. We understand that the similar name can cause that confusion. However:
- Gluten is a protein, found in wheat (and thus wheat-based foods).
- Glutamate is an amino acid, found in protein-rich foods.
- If you’re thinking “but proteins are made from amino acids”, yes, they are, but the foundational amino acid of gluten is glutamine, not glutamate. Different bricks → different house!
The body can’t process MSG correctly
False!
The body has glutamate receptors throughout the gut and nervous system.
The body metabolizes glutamate from MSG just the same as from any other food that contains it naturally.
Read: Update on food safety of monosodium l-glutamate (MSG) ← evidence-based safety review
MSG causes “Chinese Restaurant Syndrome”
False!
Racism causes that. It finds its origins in what was originally intended as a satirical joke, that the papers picked up and ran with, giving it that name in the 1960s. As to why it grew and persisted, that has more to do with US politics (the US has been often at odds with China for a long time) and xenophobia (people distrust immigrants, such as those who opened restaurants), including nationalistic rhetoric associating immigrants with diseases.
Read: Xenophobia in America in the Age of Coronavirus and Beyond ← academic paper that gives quite a compact yet comprehensive overview
Research science, meanwhile, has not found any such correlation, in more than 40 years of looking.
PS: we realize this item in the list is very US-centric. Apologies to our non-US subscribers. We know that this belief isn’t so much of a thing outside the US—though it certainly can crop up elsewhere sometimes, too.
Are there any health risks associated with MSG, then?
Well, as noted, it does contain sodium, albeit much less than table salt. So… do go easy on it, all the same.
Aside from that, the LD50 (a way of measuring toxicity) of MSG is 15.8g/kg, so if for example you weigh 150lb (68 kg), don’t eat 2.2lb (a kilogram) of MSG.
There have been some studies on rats (or in one case, fruit flies) that found high doses of MSG could cause heart problems and/or promote obesity. However:
- this has not been observed to be the case in humans
- those doses were really high, ranging from 1g/kg to 8g/kg. So that’d be the equivalent of our 150lb person eating it by the cupful
- it was injected (as a solution) into the rats, not ingested by them
- so don’t let someone inject you with a cup of MSG!
Read: A review of the alleged health hazards of monosodium glutamate
Bottom line on MSG and health:
Enjoy in moderation, but enjoy if you wish! MSG is just the salt form of the amino acid glutamate, which is found naturally in many foods, including shrimp, seaweed, and tomatoes.
Scientists have spent more than 40 years trying to find health risks for MSG, and will probably keep trying (which is as science should be), but for now… Everything has either come up negative, or has been the result of injecting laboratory animals with megadoses.
If you’d like to try it in your cooking as a low-sodium way to bring out the flavor of your dishes, you can order it online. Cheapest in bulk, but try it and see if you like it first!
(I’ll be real with you… I have 5 kg in the pantry myself and use about half a teaspoon a day, cooking for two)
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Gut-Healthy Tacos
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Full of prebiotics and probiotics, healthy fats, colorful salad boasting vitamins and minerals aplenty, and of course satisfying protein too, these tacos are also boasting generous flavors to keep you coming back for more…
You will need
- 24 sardines—canned is fine (if vegetarian/vegan, substitute tempeh and season generously; marinade if you have time)
- 12 small wholewheat tortillas
- 1 14oz/400g can black beans, drained
- 1 ripe avocado, stoned and cut into small chunks
- 1 red onion, thinly sliced
- 1 little gem lettuce, shredded
- 12 cherry tomatoes, halved
- 1 bulb garlic, crushed
- 1 lemon, sliced
- 4 tbsp plain unsweetened yogurt (your choice what kind, but something with a live culture is best)
- 3oz pickled jalapeños, roughly chopped
- 1oz cilantro (or substitute parsley if you have the cilantro-tastes-like-soap gene), finely chopped
- 1 tbsp extra virgin olive oil
- 2 tsp black pepper
- 1 tsp smoked paprika
- Juice of 1 lime
- Optional: Tabasco sauce, or similar hot sauce
Method
(we suggest you read everything at least once before doing anything)
1) Preheat your oven to a low temperature; 200℉ or just under 100℃ is fine
2) Place the lemon slices on top of the sardines on top of foil on a baking tray; you want the foil to be twice as much as you’d expect to need, because now you’re going to fold it over and make a sort of sealed envelope. You could use a dish with a lid yes, but this way is better because there’s going to be less air inside. Upturn the edges of the envelope slightly so that juices won’t run out, and make sure the foil is imperfectly sealed so a little steam can escape but not much at a time. This will ensure it doesn’t dry out, while also ensuring your house doesn’t smell of fish. Put all this into the oven on a middle shelf.
3) Mix the lime juice with the onion in a bowl, and add the avocado and tomatoes, mixing gently. Add half the cilantro, and set aside.
4) Put the black beans in a sieve and pour boiling water over them to refresh and slightly warm them. Tip them into a bowl and add the olive oil, black pepper, and paprika. Mix thoroughly with a fork, and no need to be gentle this time; in fact, deliberately break the beans a little in this case.
5) Mix the yogurt, jalapeños, garlic, and remaining cilantro in a small bowl.
6) Get the warmed sardines from the oven; discard the lemon slices.
7) Assemble! We recommend the order: tortilla, lettuce, fish (2 per taco), black bean mixture, salad mixture, garlic jalapeño yogurt mixture. You can also add a splash of the hot sauce per your preference, or if catering for more people, let people add their own.
Enjoy!
Want to learn more?
For those interested in some of the science of what we have going on today:
- We Are Such Stuff As Fish Are Made Of
- Level-Up Your Fiber Intake! (Without Difficulty Or Discomfort)
- Making Friends With Your Gut (You Can Thank Us Later)
- Our Top 5 Spices: How Much Is Enough For Benefits?
- Enjoy Pungent Polyphenols For Your Heart & Brain
Take care!
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Procrastination, and how to pay off the to-do list debt
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Procrastination, and how pay off the to-do list debt
Sometimes we procrastinate because we feel overwhelmed by the mountain of things we are supposed to be doing. If you look at your to-do list and it shows 60 overdue items, it’s little wonder if you want to bury your head in the sand!
“What difference does it make if I do one of these things now; I will still have 59 which feels as bad as having 60”
So, treat it like you might a financial debt, and make a repayment plan. Now, instead of 60 overdue items today, you have 1/day for the next 60 days, or 2/day for the next 30 days, or 3/day for the next 20 days, etc. Obviously, you may need to work out whether some are greater temporal priorities and if so, bump those to the top of the list. But don’t sweat the minutiae; your list doesn’t have to be perfectly ordered, just broadly have more urgent things to the top and less urgent things to the bottom.
Note: this repayment plan means having set repayment dates.
Up front, sit down and assign each item a specific calendar date on which you will do that thing.
This is not a deadline! It is your schedule. You’ll not try to do it sooner, and you won’t postpone it for later. You will just do that item on that date.
A productivity app like ToDoist can help with this, but paper is fine too.
What’s important here, psychologically, is that each day you’re looking not at 60 things and doing the top item; you’re just looking at today’s item (only!) and doing it.
Debt Reduction/Cancellation
Much like you might manage a financial debt, you can also look to see if any of your debts could be reduced or cancelled.
We wrote previously about the “Getting Things Done” system. It’s a very good system if you want to do that; if not, no worries, but you might at least want to borrow this one idea….
Sort your items into:
Do / Defer / Delegate / Ditch
- Do: if it can be done in under 2 minutes, do it now.
- Defer: defer the item to a specific calendar date (per the repayment plan idea we just talked about)
- Delegate: could this item be done by someone else? Get it off your plate if you reasonably can.
- Ditch: sometimes, it’s ok to realize “you know what, this isn’t that important to me anymore” and scratch it from the list.
As a last resort, consider declaring bankruptcy
Towards the end of the dot-com boom, there was a fellow who unintentionally got his 5 minutes of viral fame for “declaring email bankruptcy”.
Basically, he publicly declared that his email backlog had got so far out of hand that he would now not reply to emails from before the declaration.
He pledged to keep on top of new emails only from that point onwards; a fresh start.
We can’t comment on whether he then did, but if you need a fresh start, that can be one way to get it!
In closing…
Procrastination is not usually a matter of laziness, it’s usually a matter of overwhelm. Hopefully the above approach will help reframe things, and make things more manageable.
Sometimes procrastination is a matter of perfectionism, and not starting on tasks because we worry we won’t do them well enough, and so we get stuck in a pseudo-preparation rut. If that’s the case, our previous main feature on perfectionism may help:
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How To Escape From A Despairing Mood
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When we are in a despairing mood, that’s when it can feel hardest to actually implement anything we know about getting out of one. That’s why sometimes, the simplest solutions are the best:
Imagination Is Key
Despairing moods occur when it’s hard to envision a better life. Imagination is the power to envision alternatives, such as new jobs, relationships, or lifestyle, but sadness can cloud our ability to imagine solutions like changing careers, moving house, or starting fresh. With enough imagination, most problems can be worked around—and new opportunities can always be found.
Importantly: we are not bound by our past or present circumstances; we have the freedom and flexibility to choose new paths. That doesn’t mean it’ll always be a walk in the park, but “this too shall pass”.
You may be thinking: “sometimes the hardship does pass, but can last many years”, and that is true. All the more reason to check if there’s a freer lane you can slip into to speed ahead. Even if there isn’t, the mere act of imagining such lanes is already respite from the hardships—and having envisioned such will make it much easier for you to recognise when opportunities for change do come along.
To foster imagination, we are advised to expose ourselves to different narratives, preparing ourselves for alternative ways of living. Thus, we can reframe life’s challenges as intellectual puzzles, urging us to rebuild creatively and find new solutions!
For more on all this, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
Behavioral Activation Against Depression & Anxiety
Take care!
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