Caffeine: Cognitive Enhancer Or Brain-Wrecker?
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.
The Two Sides Of Caffeine
We asked you for your health-related opinions on caffeine itself, not necessarily the coffee, tea, energy drinks, etc that might contain it.
We have, by the way previously written about the health effects of coffee and tea specifically:
As for our question about caffeine itself, though, we got the above-depicted, below-described, set of results:
- About 59% said “caffeine is a safe stimulant and cognitive enhancer”
- About 31% said “caffeine is a moderately safe recreational drug”
- About 8% said “caffeine’s addictive properties make it de facto bad”
- One (1) person said “caffeine will leave you a trembling exhausted wreck”
But what does the science say?
Caffeine is addictive: True or False?
True, though one will find occasional academics quibbling the definition. Most of the studies into the mechanisms of caffeine addiction have been conducted on rats, but human studies exist too and caffeine is generally considered addictive for humans, for example:
See also:
Notwithstanding its addictive status, caffeine is otherwise safe: True or False?
True-ish, for most people. Some people with heart conditions or a hypersensitivity to caffeine may find it is not safe for them at all, and for the rest of us, the dose makes the poison. For example:
❝Can too much caffeine kill you? Although quite rare, caffeine can be fatal in cases of overdose; such circumstances are generally not applicable to healthy individuals who typically consume caffeine via beverages such as tea or coffee.❞
this paper, by the way, also includes a good example of academics quibbling the definition of addiction!
Caffeine is a cognitive enhancer: True or False?
True, but only in the case of occasional use. If you are using it all the time, your physiology will normalize it and you will require caffeine in order to function at your normal level. To attain higher than that, once addicted to caffeine, would now require something else.
Read more: Caffeine: benefits and drawbacks for technical performance
Caffeine will leave you a trembling exhausted wreck: True or False?
True or False depending on usage:
- The famously moderate 3–5 cups per day will not, for most people, cause any such problems.
- Using/abusing it to make up for lost sleep (or some other source of fatigue, such as physical exhaustion from exertion), however, is much more likely to run into problems.
In the latter case, caffeine really is the “payday loan” of energy! It’ll give you an adrenal boost now (in return, you must suffer the adrenal dumping later, along with lost energy expended in the adrenaline surge), and also, the tiredness that you thought was gone, was just caffeine’s adenosine-blocking activities temporarily preventing you from being able to perceive the tiredness. So you’ll have to pay that back later, with interest, because of the extra time/exertion too.
Want to make caffeine a little more gentle on your system?
Taking l-theanine alongside caffeine can ameliorate some of caffeine’s less wonderful effects—and as a bonus, l-theanine has some nifty benefits of its own, too:
Enjoy!
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Recommended
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
-
Minimize Aging’s Metabolic Slump
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
It’s Q&A Day at 10almonds!
Have a question or a request? We love to hear from you!
In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!
As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!
So, no question/request too big or small
❝I know that metabolism slows with age, are there any waypoints or things to look out for? I don’t know whether I should be eating less, or doing less, or taking some other approach entirely. What’s recommended?❞
Age and sex count for a lot with this one! As metabolism is in large part directed by hormones:
- For men, declining testosterone (often from around 45 onwards) can result in a metabolic slump
- For women, declining estrogen with the menopause does have an effect, but progesterone is the bigger factor for metabolism in the sense you are talking about.
In both cases, simply taking more of those hormones can often help, but please of course speak with an endocrinologist if that seems like a possible option for you, as your circumstances (and physiology) may vary.
If you’d like to go to that conversation well-armed with information, here are some good starting points, by the way:
- The Testosterone Drop, & Topping Up Testosterone
- Menopausal HRT: Bioidentical vs Animal (It Makes A Difference!)
And if you’re wondering about the natural vs pharmaceutical approaches…
- What Does “Balance Your Hormones” Even Mean?
- What You Should Have Been Told About The Menopause Beforehand
About your metabolic base rate
We tend to think of “fast metabolism good, slow metabolism bad”, and that’s a reasonable general premise… but it’s not necessarily always so.
After all, if you could double your metabolism and keep it there all the time, without changing anything else, well… You’ve heard the phrase “burning the candle at both ends”? So, having at least some downtime is important too.
See for example: Sleep Deprivation & Diabetes Risk
What’s critical, when it comes to base metabolic rate, is that your body must be capable of adequately processing what you are putting into it. Because if your body can’t keep up with the input, it’ll just start storing the excess chemical energy in the quickest and easiest way possible.
…which is a fast track to metabolic disorder in general and type 2 diabetes in particular. For more on the science and mechanics of this, see:
How To Prevent And Reverse Type 2 Diabetes
As for portion sizes…
Your body knows what you need, so listen to it. There is no external source of knowledge that can tell you how much food you need better than your own body itself can tell you.
You may be wondering “how exactly do I listen to my body, though?”, in which case, check out:
The Kitchen Doctor: Interoception & Mindful Eating
As for exercise…
When you exercise, your metabolic rate temporarily increases. After most kinds of exercise, your metabolism slumps again afterwards to compensate.
There are two ways to avoid this:
- Exercise Less, Move More ← it’s about maximizing time spent not sitting still
- High Intensity Interval Training ← a special kind of exercise, the only one known to keep the metabolism running high for a couple of hours afterwards, with no counter-slump
…which makes it pretty effective indeed
Would you like this section to be bigger? If so, send us more questions!
Share This Post
-
The DASH Diet Mediterranean Solution – by Dr. Marla Heller
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.
Sometimes, an author releases a series of books that could have just been one book, with various padding and rehashes. In some cases, naming no names
Dr. Mark Hyman, it means we have to carefully pick out the honestly very good and highly recommendable ones from the “you just republished for the extra income, didn’t you?” ones.In this case, today’s book is part of a series of books with very similar titles, and this one seems the most useful as a standalone book
The Mediterranean Diet is still the scientific world’s current “gold standard” in terms of most evidence-based diet for general health, and as we’ve written about, it can be tweaked to focus on being best for [your particular concern here]. In this case, it’s the DASH variant of the Mediterranean Diet, considered best for heart health specifically.
The style is repetitive, and possibly indicative of the author getting into a habit of having to pad books. Nevertheless, saying things too often is better than forgetting to say them, so hey. On which note, it is more of an educational book than a cookbook—it does have recipes, but not many.
Bottom line: if you’d like an introduction to the DASH variant of the Mediterranean Diet, this book will get you well-acquainted.
Click here to check out The DASH Diet Mediterranean Solution, and learn all about it!
Share This Post
-
Managing [E-word] Dysfunction Reactions
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
It’s Q&A Day at 10almonds!
Have a question or a request? You can always hit “reply” to any of our emails, or use the feedback widget at the bottom!
In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!
As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!
So, no question/request too big or small
We had several requests pertaining to veganism, meatless mondays, and substitutions in recipes—so we’re going to cover those on a different day!
As for questions we’re answering today…
Q: Information on [e-word] dysfunction for those who have negative reactions to [the most common medications]?
When it comes to that particular issue, one or more of these three factors are often involved:
- Hormones
- Circulation
- Psychology
The most common drugs (that we can’t name here) work on the circulation side of things—specifically, by increasing the localized blood pressure. The exact mechanism of this drug action is interesting, albeit beyond the scope of a quick answer here today. On the other hand, the way that they work can cause adverse blood-pressure-related side effects for some people; perhaps you’re one of them.
To take matters into your own hands, so to speak, you can address each of those three things we just mentioned:
Hormones
Ask your doctor (or a reputable phlebotomy service) for a hormone test. If your free/serum testosterone levels are low (which becomes increasingly common in men over the age of 45), they may prescribe something—such as testosterone shots—specifically for that.
This way, it treats the underlying cause, rather than offering a workaround like those common pills whose names we can’t mention here.
Circulation
Look after your heart health; eat for your heart health, and exercise regularly!
Cold showers/baths also work wonders for vascular tone—which is precisely what you need in this matter. By rapidly changing temperatures (such as by turning off the hot water for the last couple of minutes of your shower, or by plunging into a cold bath), your blood vessels will get practice at constricting and maintaining that constriction as necessary.
Psychology
[E-word] dysfunction can also have a psychological basis. Unfortunately, this can also then be self-reinforcing, if recalling previous difficulties causes you to get distracted/insecure and lose the moment. One of the best things you can do to get out of this catch-22 situation is to not worry about it in the moment. Depending on what you and your partner(s) like to do in bed, there are plenty of other equally respectable options, so just switch track!
Having a conversation about this in advance will probably be helpful, so that everyone’s on the same page of the script in that eventuality, and it becomes “no big deal”. Without that conversation, misunderstandings and insecurities could arise for your partner(s) as well as yourself (“aren’t I desirable enough?” etc).
So, to recap, we recommend:
- Have your hormones checked
- Look after your circulation
- Make the decision to have fun!
Share This Post
Related Posts
-
Cranberries vs Goji Berries – Which is Healthier?
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.
Our Verdict
When comparing cranberries to goji berries, we picked the cranberries.
Why?
Both are great! And your priorities may differ. Here’s how they stack up:
In terms of macros, goji berries have more protein, carbs, and fiber. This is consistent with them generally being eaten very dried, whereas cranberries are more often eaten fresh or from frozen, or partially rehydrated. In any case, goji berries are the “more food per food” option, so it wins this category. The glycemic indices are both low, by the way, though goji berries are the lower.
When it comes to vitamins, cranberries have more of vitamins B1, B2, B3, B5, B6, B9, E, K, and choline, while goji berries have more of vitamins A and C. Admittedly it’s a lot more, but still, on strength of overall vitamin coverage, the clear winner here is cranberries.
We see a similar story when it comes to minerals: cranberries have more copper, magnesium, manganese, phosphorus, potassium, selenium, and zinc, while goji berries have (a lot) more calcium and iron. Again, by strength of overall mineral coverage, the clear winner here is cranberries.
Cranberries do also have some extra phytochemical benefits, including their prevention/cure status when it comes to UTIs—see our link below for more on that.
At any rate, enjoy either or both, but those are the strengths and weaknesses of these two berries!
Want to learn more?
You might like to read:
- Health Benefits Of Cranberries (But: You’d Better Watch Out)
- Goji Berries: Which Benefits Do They Really Have?
- The Sugary Food That Lowers Blood Sugars ← this is also about goji berries
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:
-
The Brain Alarm Signs That Warn Of Dementia
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.
When it comes to predicting age-related cognitive impairment:
First there are genetic factors to take into account (such as the APOE4 gene for Alzheimer’s), as well as things such as age and sex.
When it comes to sex, by the way, what matters here is hormones, which is why [it seems; this as technically as yet unproven with full rigor, but the hypothesis is sound and there is a body of evidence gradually being accumulated to support it] postmenopausal women with untreated menopause get Alzheimer’s at a higher rate and deteriorate more quickly:
Alzheimer’s Sex Differences May Not Be What They Appear
Next, there are obviously modifiable lifestyle factors to take into account, things that will reduce your risk such as getting good sleep, good diet, good exercise, and abstaining from alcohol and smoking, as well as oft-forgotten things such as keeping cognitively active and, equally importantly, socially active:
How To Reduce Your Alzheimer’s Risk
(the article outlines what matters the most in each of the above areas, by the way, so that you can get the most bang-for-buck in terms of lifestyle adjustments)
Lastly (in the category of risk factors), there are things to watch out for in the blood such as hypertension and high cholesterol.
Nipping it in the blood
In new research (so new it is still ongoing, but being at year 2 of a 4-year prospective study, they have published a paper with their results so far), researchers have:
- started with the premise “dementia is preceded by mild cognitive impairment”
- then, asked the question “what are the biometric signs of mild cognitive impairment?”
Using such tools as functional near-infrared spectroscopy (fNIRS) while the participants performed cognitive tasks, they were able to record changes in plasma levels of extracellular vesicles, assessing them with small-particle flow cytometry.
Translating from sciencese: they gave the participants mental tasks, and while they completed them, the researchers scanned their brains and monitored blood flow and the brain’s ability to compensate for any lack of it.
What they found:
- in young adults, blood flow increased, facilitating neurovascular coupling (this is good)
- in older adults, blood flow did not increase as much, but they engaged other areas of the brain to compensate, by what’s called functional connectivity (this is next best)
- in those with mild cognitive impairment, blood flow was reduced, and they did not have the ability to compensate by functional connectivity (this is not good)
They also performed a liquid biopsy, which sounds alarming but it just means they took some blood, and tested this for density of cerebrovascular endothelial extracellular vesicles (CEEVs), which—in more prosaic words—are bits from the cells lining the blood vessels in the brain.
People with mild cognitive impairment had more of these brain bits in their blood than those without.
You can read the paper itself here:
What this means
The science here is obviously still young (being as it is still in progress), but this will likely contribute greatly to early warning signs of dementia, by catching mild cognitive impairment in its early stages, by means of a simple blood test, instead of years of wondering before getting a dementia diagnosis.
And of course, forewarned is forearmed, so if this is something that could be done as a matter of routine upon hitting the age of, say, 65 and then periodically thereafter, it would catch a lot of cases while there’s still more time to turn things around.
As for how to turn things around, well, we imagine you have now read our “How To Reduce Your Alzheimer’s Risk” article linked up top (if not, we recommend checking it out), and there is also…
Do Try This At Home: The 12-Week Brain Fitness Program To Measurably Boost Your Brain
Take care!
When it comes to predicting age-related cognitive impairment:
First there are genetic factors to take into account (such as the APOE4 gene for Alzheimer’s), as well as things such as age and sex.
When it comes to sex, by the way, what matters here is hormones, which is why [it seems; this as technically as yet unproven with full rigor, but the hypothesis is sound and there is a body of evidence gradually being accumulated to support it] postmenopausal women with untreated menopause get Alzheimer’s at a higher rate and deteriorate more quickly:
Alzheimer’s Sex Differences May Not Be What They Appear
Next, there are obviously modifiable lifestyle factors to take into account, things that will reduce your risk such as getting good sleep, good diet, good exercise, and abstaining from alcohol and smoking, as well as oft-forgotten things such as keeping cognitively active and, equally importantly, socially active:
How To Reduce Your Alzheimer’s Risk
(the article outlines what matters the most in each of the above areas, by the way, so that you can get the most bang-for-buck in terms of lifestyle adjustments)
Lastly (in the category of risk factors), there are things to watch out for in the blood such as hypertension and high cholesterol.
Nipping it in the blood
In new research (so new it is still ongoing, but being at year 2 of a 4-year prospective study, they have published a paper with their results so far), researchers have:
- started with the premise “dementia is preceded by mild cognitive impairment”
- then, asked the question “what are the biometric signs of mild cognitive impairment?”
Using such tools as functional near-infrared spectroscopy (fNIRS) while the participants performed cognitive tasks, they were able to record changes in plasma levels of extracellular vesicles, assessing them with small-particle flow cytometry.
Translating from sciencese: they gave the participants mental tasks, and while they completed them, the researchers scanned their brains and monitored blood flow and the brain’s ability to compensate for any lack of it.
What they found:
- in young adults, blood flow increased, facilitating neurovascular coupling (this is good)
- in older adults, blood flow did not increase as much, but they engaged other areas of the brain to compensate, by what’s called functional connectivity (this is next best)
- in those with mild cognitive impairment, blood flow was reduced, and they did not have the ability to compensate by functional connectivity (this is not good)
They also performed a liquid biopsy, which sounds alarming but it just means they took some blood, and tested this for density of cerebrovascular endothelial extracellular vesicles (CEEVs), which—in more prosaic words—are bits from the cells lining the blood vessels in the brain.
People with mild cognitive impairment had more of these brain bits in their blood than those without.
You can read the paper itself here:
What this means
The science here is obviously still young (being as it is still in progress), but this will likely contribute greatly to early warning signs of dementia, by catching mild cognitive impairment in its early stages, by means of a simple blood test, instead of years of wondering before getting a dementia diagnosis.
And of course, forewarned is forearmed, so if this is something that could be done as a matter of routine upon hitting the age of, say, 65 and then periodically thereafter, it would catch a lot of cases while there’s still more time to turn things around.
As for how to turn things around, well, we imagine you have now read our “How To Reduce Your Alzheimer’s Risk” article linked up top (if not, we recommend checking it out), and there is also…
Do Try This At Home: The 12-Week Brain Fitness Program To Measurably Boost Your Brain
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:
-
Vision for Life, Revised Edition – by Dr. Meir Schneider
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.
The “ten steps” would be better called “ten exercises”, as they’re ten things that one can (and should) continue to do on an ongoing basis, rather than steps to progress through and then forget about.
We can’t claim to have tested the ten exercises for improvement (this reviewer has excellent eyesight and merely hopes to maintain such as she gets older) but the rationale is compelling, and the public testimonials abundant.
Dr. Schneider also talks about improving and correcting errors of refraction—in other words, doing the job of any corrective lenses you may currently be using. While he doesn’t claim miracles, it turns out there is a lot that can be done for common issues such as near-sightedness and far-sightedness, amongst others.
There’s a large section on managing more chronic pathological eye conditions than this reviewer previously knew existed; in some cases it’s a matter of making sure things don’t get worse, but in many others, there’s a recurring of theme of “and here’s an exercise for correcting that”.
The writing style is a little more “narrative prose” than we’d have liked, but the quality of the content more than makes up for any style preference issues.
Bottom line: the human body is a highly adaptive organism, and sometimes it just needs a little help to correct itself. This book can help with that.
Click here to check out Vision for Life, and take good care of yours!
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:
