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The biohacking movement is trying to overcome its “N=1” problem (in which a sample size includes only the person doing the experimenting) by sharing experiences online or via meetups. But a biohacking group, like any community organized around a common interest, can easily become an echo chamber. James Alcock, Ph.D., a professor of social psychology at York University in Canada and the author of the book Belief: What It Means to Believe and Why Our Convictions Are So Compelling, says biohackers may be unwittingly painting one another an unreasonably rosy picture of how well nootropics work—even when they don’t.

I take my piracetam in the form of capped pills consisting (in descending order) of piracetam, choline bitartrate, anhydrous caffeine, and l-tyrosine. On 8 December 2012, I happened to run out of them and couldn’t fetch more from my stock until 27 December. This forms a sort of (non-randomized, non-blind) short natural experiment: did my daily 1-5 mood/productivity ratings fall during 8-27 December compared to November 2012 & January 2013? The graphed data29 suggests to me a decline:
The powder itself is quite bulky; the recommended dose to hit 200mg of absorbed magnesium leads to ~7g of powder (so capping will be difficult) and the container provides only 30 doses’ worth (or each dose costs $1!). It’s described as lemon-flavored, and it is, but it’s sickly-sweet unpleasant and since it’s so much powder, takes half a glass of water to dissolve it entirely and wash it down. Subjectively, I notice nothing after taking it for a week. I may try a simple A-B-A analysis of sleep or Mnemosyne, but I’m not optimistic. And given the large expense of LEF’s Magtein, it’s probably a non-starter even if there seems to be an effect. For sleep effects, I will have to look at more reasonably priced magnesium sources.
When many of us think of memory enhancers, we think of ginkgo biloba, the herb that now generates more than $240 million in sales a year worldwide. The October 22-29, 1997 issue of the Journal of the American Medical Association reported that Alzheimer's patients who took 120 mg of ginkgo showed small improvements in tests designed to measure mental performance.
The makeup of the brain is about 29% fat, most of which is located in myelin (which itself is 70–80% fat).[8] Specific fatty acid ratios will depend in part on the diet of the animal it is harvested from. The brain is also very high in cholesterol. For example, a single 140 g (5 oz) serving of "pork brains in milk gravy" can contain 3500 mg of cholesterol (1170% of the USRDA).[9]
Avocados are almost as good as blueberries in promoting brain health, Dr. Pratt told WebMD.com. These buttery fruits are rich in monounsaturated fat, which contributes to healthy blood flow in the brain, according to Ann Kulze, MD, author of Dr. Ann’s 10-Step Diet: A Simple Plan for Permanent Weight Loss & Lifelong Vitality. This helps every organ in your body—particularly the brain and heart. Avocados also lower blood pressure, thanks to their potassium. Because high blood pressure can impair cognitive abilities, lower blood pressure helps to keep the brain in top form and reduce your risks for hypertension or a stroke. The fiber in avocados also reduces the risk of heart disease and bad cholesterol.  These foods are good for your brain later in life.

Nothing happened until I was falling asleep, when I became distinctly aware that I was falling asleep. I monitored the entire process and remained lucid, with a measure of free will, as I dreamed, and woke up surprisingly refreshed. While I remembered many of my dreams, some of which were quite long, I couldn't recall how my underpants ended up around my ankles.


Most of the most solid fish oil results seem to meliorate the effects of age; in my 20s, I’m not sure they are worth the cost. But I would probably resume fish oil in my 30s or 40s when aging really becomes a concern. So the experiment at most will result in discontinuing for a decade. At $X a year, that’s a net present value of sum $ map (\n -> 70 / (1 + 0.05)^n) [1..10] = $540.5.
But what does this all have to do with food? Our gut helps keep our body’s immune responses and inflammation under control. Additionally, gut hormones that enter the brain or are produced in the brain influence cognitive ability, like understanding and processing new information, staying focused on the task at hand and recognizing when we’re full. (3)
Nootropics, also known as ‘brain boosters’, or ‘cognitive enhancers’ are made up of a variety of artificial and natural compounds that help in enhancing the cognitive activities of the brain by regulating or altering the production of neurochemicals and neurotransmitters in the brain. It improves blood flow, stimulates neurogenesis (the process by which neurons are produced in the body by neural stem cells), enhances nerve growth rate, modifies synapses, and improves cell membrane fluidity. Thus, positive changes are created within your body, which helps you to function optimally; whatever be your current lifestyle and individual needs.
Research does not support that drugs like Ritalin help students do well in school. Studies show that prescription stimulants do not help to improve learning or thinking in those who do not actually have ADHD. Further, research reveals that students who abuse prescription stimulants have lower GPAs than students who do not abuse the drugs.[14] Although Ritalin improves concentration, this effect is largely misunderstood among non-prescribed users. These illicit users mistakenly believe that they can use a drug out of its prescribed context, thinking they can reap the benefits intended for legitimate users.
Pre and Post-Natal Depression are both complex conditions that can have multifactorial underlying drivers, including genetic and environmental influences. These are currently poorly investigated and the gold standard of treatment is often medication to help stabilise mood. Whilst SSRIs and other types of antidepressants have proven to be helpful for many, they do not address potential causes or drivers of poor mental health and can often mask symptoms. Antidepressants are also not regularly recommended during pregnancy, which is why being more mindful of nutrition and lifestyle habits can be a safer option for you and your baby. There are some natural, evidence-based steps you can take to help support optimal mental wellbeing:
Gibson and Green (2002), talking about a possible link between glucose and cognition, wrote that research in the area …is based on the assumption that, since glucose is the major source of fuel for the brain, alterations in plasma levels of glucose will result in alterations in brain levels of glucose, and thus neuronal function. However, the strength of this notion lies in its common-sense plausibility, not in scientific evidence… (p. 185).
Too much caffeine may be bad for bone health because it can deplete calcium. Overdoing the caffeine also may affect the vitamin D in your body, which plays a critical role in your body’s bone metabolism. However, the roles of vitamin D as well as caffeine in the development of osteoporosis continue to be a source of debate. Significance: Caffeine may interfere with your body’s metabolism of vitamin D, according to a 2007 Journal of Steroid Biochemistry & Molecular Biology study. You have vitamin D receptors, or VDRs, in your osteoblast cells. These large cells are responsible for the mineralization and synthesis of bone in your body. They create a sheet on the surface of your bones. The D receptors are nuclear hormone receptors that control the action of vitamin D-3 by controlling hormone-sensitive gene expression. These receptors are critical to good bone health. For example, a vitamin D metabolism disorder in which these receptors don’t work properly causes rickets.

Gibson and Green (2002), talking about a possible link between glucose and cognition, wrote that research in the area …is based on the assumption that, since glucose is the major source of fuel for the brain, alterations in plasma levels of glucose will result in alterations in brain levels of glucose, and thus neuronal function. However, the strength of this notion lies in its common-sense plausibility, not in scientific evidence… (p. 185).
Modafinil is a stimulant specifically designed to reduce fatigue and sleepiness. It was approved for treatment of narcolepsy in 1998, and although the exact mechanism behind its effects is not fully understood, most research indicates that modafinil also works by inhibiting reuptake of dopamine, which produces effects similar to those of methylphenidate. It’s also believed that by inhibiting dopamine uptake, more acetylcholine (another neurotransmitter) is released by the hippocampus, which leads to improved cognitive performance, specifically memory.
I posted a link to the survey on my Google+ account, and inserted the link at the top of all gwern.net pages; 51 people completed all 11 binary choices (most of them coming from North America & Europe), which seems adequate since the 11 questions are all asking the same question, and 561 responses to one question is quite a few. A few different statistical tests seem applicable: a chi-squared test whether there’s a difference between all the answers, a two-sample test on the averages, and most meaningfully, summing up the responses as a single pair of numbers and doing a binomial test:
We started hearing the buzz when Daytime TV Doctors, started touting these new pills that improve concentration, memory recall, focus, mental clarity and energy. And though we love the good Doctor and his purple gloves, we don’t love the droves of hucksters who prey on his loyal viewers trying to make a quick buck, often selling low-grade versions of his medical discoveries.
Some work has been done on estimating the value of IQ, both as net benefits to the possessor (including all zero-sum or negative-sum aspects) and as net positive externalities to the rest of society. The estimates are substantial: in the thousands of dollars per IQ point. But since increasing IQ post-childhood is almost impossible barring disease or similar deficits, and even increasing childhood IQs is very challenging, much of these estimates are merely correlations or regressions, and the experimental childhood estimates must be weakened considerably for any adult - since so much time and so many opportunities have been lost. A wild guess: $1000 net present value per IQ point. The range for severely deficient children was 10-15 points, so any normal (somewhat deficient) adult gain must be much smaller and consistent with Fitzgerald 2012’s ceiling on possible effect sizes (small).
It’s not easy to make it in the modern world, which asks you to be focused and sharp all the time. You have to be creative and learn the new skills all the time. That’s a heavy burden for your brain cells. One day, sooner or later, you have to accept the fact that your brain power and effectiveness are no longer as impressive and reliable as once they were. Brain Pill can help. You don’t have to force yourself to accept your new reality of limited focus and weak ability to learn new things. Brain Pill can refresh your mental clarity and improve your problem-solving and decision-making skills.
Cytisine is not known as a stimulant and I’m not addicted to nicotine, so why give it a try? Nicotine is one of the more effective stimulants available, and it’s odd how few nicotine analogues or nicotinic agonists there are available; nicotine has a few flaws like short half-life and increasing blood pressure, so I would be interested in a replacement. The nicotine metabolite cotinine, in the human studies available, looks intriguing and potentially better, but I have been unable to find a source for it. One of the few relevant drugs which I can obtain is cytisine, from Ceretropic, at 2x1.5mg doses. There are not many anecdotal reports on cytisine, but at least a few suggest somewhat comparable effects with nicotine, so I gave it a try.
Still, the scientific backing and ingredient sourcing of nootropics on the market varies widely, and even those based in some research won't necessarily immediately, always or ever translate to better grades or an ability to finally crank out that novel. Nor are supplements of any kind risk-free, says Jocelyn Kerl, a pharmacist in Madison, Wisconsin.
That first night, I had severe trouble sleeping, falling asleep in 30 minutes rather than my usual 19.6±11.9, waking up 12 times (5.9±3.4), and spending ~90 minutes awake (18.1±16.2), and naturally I felt unrested the next day; I initially assumed it was because I had left a fan on (moving air keeps me awake) but the new potassium is also a possible culprit. When I asked, Kevin said:
Increase your memory, alertness, energy and focus with the most revolutionary “limitless” pill ever created. As we age, our brains start to slow down both in reaction time and in the recalling of memories. That’s why we need to not only regain our mental capacity, we need to enhance it to such heights that we go well beyond where we started. When you use the dietary supplement Addium, you can total replenish and revitalize your mental alertness in a safe, all-natural way. Made of some of the most powerful brain enhancing ingredients on the market, Addium can be used each day to increase memory function, enhance brain power, increase physical energy and stay sharper and more focused. Don’t just settle for feeling like everyone else; it’s time to take your mind to a limitless state of mental preparedness. Addium Brain Enhancing Dietary Supplement also contains the following benefits: • Boosts your capacity for learning • Increases your alertness and focus • Safe and all natural • Promotes strong brain function • Enhances memory and performance Addium contains: Vitamin B6 - An economical source for cardio health and energy metabolism. Addium contains a Proprietary Blend of: Acetyl L-Carnitine - Energizes the mind and promotes concentration. L-Theanine - Enhances endocrine function, stimulating some brain waves and leaving others unaffected. Caffeine - Increase mental alertness. Rhodiola Rosea Extract - Fights the physical and mental effects of stress. Bacopa Monnieri Extract – This ingredient increases cerebral blood flow and cognitive function at the same time.

Some suggested that the lithium would turn me into a zombie, recalling the complaints of psychiatric patients. But at 5mg elemental lithium x 200 pills, I’d have to eat 20 to get up to a single clinical dose (a psychiatric dose might be 500mg of lithium carbonate, which translates to ~100mg elemental), so I’m not worried about overdosing. To test this, I took on day 1 & 2 no less than 4 pills/20mg as an attack dose; I didn’t notice any large change in emotional affect or energy levels. And it may’ve helped my motivation (though I am also trying out the tyrosine).
I have personally found that with respect to the NOOTROPIC effect(s) of all the RACETAMS, whilst I have experienced improvements in concentration and working capacity / productivity, I have never experienced a noticeable ongoing improvement in memory. COLURACETAM is the only RACETAM that I have taken wherein I noticed an improvement in MEMORY, both with regards to SHORT-TERM and MEDIUM-TERM MEMORY. To put matters into perspective, the memory improvement has been mild, yet still significant; whereas I have experienced no such improvement at all with the other RACETAMS.
Racetams, such as piracetam, oxiracetam, and aniracetam, which are often marketed as cognitive enhancers and sold over-the-counter. Racetams are often referred to as nootropics, but this property is not well established.[31] The racetams have poorly understood mechanisms, although piracetam and aniracetam are known to act as positive allosteric modulators of AMPA receptors and appear to modulate cholinergic systems.[32]
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