Mercury exposure is among several other heavy metals, such as lead, aluminium and cadmium, that have been implicated in the aetiology of ADHD. Childhood exposure to mercury is predominantly through the consumption of seafood, dental amalgams and vaccines containing thimerosal. The reason why mercury can be so problematic, as well as other metals, is that it is capable of breaching the blood brain barrier. This is the brain’s ‘high fortress’, an intelligent gateway system that filters through molecules that are needed in the brain such as cells, nutrients and signalling molecules, and filters out pathogens and toxins.
As discussed in my iodine essay (FDA adverse events), iodine is a powerful health intervention as it eliminates cretinism and improves average IQ by a shocking magnitude. If this effect were possible for non-fetuses in general, it would be the best nootropic ever discovered, and so I looked at it very closely. Unfortunately, after going through ~20 experiments looking for ones which intervened with iodine post-birth and took measures of cognitive function, my meta-analysis concludes that: the effect is small and driven mostly by one outlier study. Once you are born, it’s too late. But the results could be wrong, and iodine might be cheap enough to take anyway, or take for non-IQ reasons. (This possibility was further weakened for me by an August 2013 blood test of TSH which put me at 3.71 uIU/ml, comfortably within the reference range of 0.27-4.20.)
Jump up ^ Greely, Henry; Sahakian, Barbara; Harris, John; Kessler, Ronald C.; Gazzaniga, Michael; Campbell, Philip; Farah, Martha J. (December 10, 2008). "Towards responsible use of cognitive-enhancing drugs by the healthy". Nature. Nature Publishing Group. 456 (7223): 702–705. Bibcode:2008Natur.456..702G. doi:10.1038/456702a. ISSN 1476-4687. OCLC 01586310. PMID 19060880. Retrieved March 25, 2014. (Subscription required (help)).
Unlike many hypothetical scenarios that bioethicists worry about - human clones, "designer babies" - cognitive enhancement is already in full swing. But how much do they actually help? Are they potentially harmful or addictive? Then there's the question of what we mean by "smarter". Could enhancing one kind of thinking exact a toll on others? All these questions need proper scientific answers, but for now much of the discussion is taking place furtively, among the increasing number of people who are performing daily experiments on their own brains.
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My first impression of ~1g around 12:30PM was that while I do not feel like running around, within an hour I did feel like the brain fog was lighter than before. The effect wasn’t dramatic, so I can’t be very confident. Operationalizing brain fog for an experiment might be hard: it doesn’t necessarily feel like I would do better on dual n-back. I took 2 smaller doses 3 and 6 hours later, to no further effect. Over the following weeks and months, I continued to randomly alternate between potassium & non-potassium days. I noticed no effects other than sleep problems.
This product has very nice labeling - very easy to understand and the directions for taking it are immediately at the top of the label in the back. You only have to take or or two tablets a day (preferably with meals) so I 've been taking one a day with my noon meal. I'm a bit surprised that it seems already (after two weeks) that I'm remembering things better (my husband even remarked on it!). Normally, I rely on him for my memory about most things (that, and post-it notes) but I seem to be doing better since taking this supplement. My husband also noticed that I'm in a better mood (more playful and wanting to do things). It has definitely altered my mood - it is winter now where I live and because you don't get as much sunshine and every spare moment is taken up by shoveling, you can get a bit more down in the dumps, which I normally do every year.. It hasn't been like that this year and I feel this supplement has a lot to do with that. Thanks #Vitacern!!!!
I almost resigned myself to buying patches to cut (and let the nicotine evaporate) and hope they would still stick on well enough afterwards to be indistinguishable from a fresh patch, when late one sleepless night I realized that a piece of nicotine gum hanging around on my desktop for a week proved useless when I tried it, and that was the answer: if nicotine evaporates from patches, then it must evaporate from gum as well, and if gum does evaporate, then to make a perfect placebo all I had to do was cut some gum into proper sizes and let the pieces sit out for a while. (A while later, I lost a piece of gum overnight and consumed the full 4mg to no subjective effect.) Google searches led to nothing indicating I might be fooling myself, and suggested that evaporation started within minutes in patches and a patch was useless within a day. Just a day is pushing it (who knows how much is left in a useless patch?), so I decided to build in a very large safety factor and let the gum sit for around a month rather than a single day.
Not long ago I met Anjan Chatterjee, a neurologist at the University of Pennsylvania, in his office at the labyrinthine Penn hospital complex. Chatterjee's main research interests are in subjects like the neurological basis of spatial understanding, but in the past few years, as he has heard more about students taking cognitive enhancers, he has begun writing about the ethical implications of such behaviour. In 2004 he coined the term "cosmetic neurology" to describe the practice of using drugs developed for recognised medical conditions to strengthen ordinary cognition. Chatterjee worries about cosmetic neurology, but he thinks that it will eventually become as acceptable as cosmetic surgery; in fact with neuroenhancement it's harder to argue that it's frivolous. As he notes in a 2007 paper: "Many sectors of society have winner-take-all conditions in which small advantages produce disproportionate rewards." At school and at work, the usefulness of being "smarter", needing less sleep and learning more quickly is "abundantly clear". In the near future, he predicts, some neurologists will refashion themselves as "quality-of-life consultants" whose role will be "to provide information while abrogating final responsibility for these decisions to patients". The demand is certainly there: from an ageing population that won't put up with memory loss; from overwrought parents bent on giving their children every possible edge; from anxious employees in an efficiency-obsessed, BlackBerry-equipped office culture where work never really ends.
Professor David O Kennedy published a book in 2014 called Plants and the Human Brain. In his book he summarizes the last 15 years of research into cognitive nutrition, including the work he's done with colleagues at the Brain Performance Nutrition Research Center at Northumbria University. It's a great read and a good guide to what sorts of herbs and other plants to include in our weekly diet and it is all based on hard science rather than mere assertion or trendy but unsubstantiated beliefs.
Breathing carefully, I clutched the Costco special edition family size 1.5-liter glass bottle of vodka and carefully extracted 10 milliliters with a miniature glass pipette, which I then transferred into a small amber glass bottle. Then, with my nine-year-old son’s tiny set of school scissors, I snipped exactly 1/10 of LSD from the blotter square I’d ordered from a psychedelic research chemical supplier website the week prior, with a cloaked browser, of course, so the feds didn’t come knocking at my door. I dropped the LSD into the bottle, gave it a thirty-second shake, then placed the bottle in the pantry, next to my protein powder and creatine. I smiled. Within 24 hours, I’d be ready to sample my first homemade, volumetric “microdose” of a drug reported to increase lateral thinking patterns, improve creativity, massively boost productivity and much, much more.
Jump up ^ EFSA Panel on Dietetic Products, Nutrition and Allergies; European Food Safety Authority (EFSA), Parma, Italy (2011). "Scientific Opinion on the substantiation of health claims related to L-theanine from Camellia sinensis (L.) Kuntze (tea) and improvement of cognitive function (ID 1104, 1222, 1600, 1601, 1707, 1935, 2004, 2005), alleviation of psychological stress (ID 1598, 1601), maintenance of normal sleep (ID 1222, 1737, 2004) and reduction of menstrual discomfort (ID 1599) pursuant to Article 13(1) of Regulation (EC) No 1924/2006". EFSA Journal. 9 (6): 2238. doi:10.2903/j.efsa.2011.2238.
One reason I like modafinil is that it enhances dopamine release, but it binds to your dopamine receptors differently than addictive substances like cocaine and amphetamines do, which may be part of the reason modafinil shares many of the benefits of other stimulants but doesn’t cause addiction or withdrawal symptoms. [3] [4] It does increase focus, problem-solving abilities, and wakefulness, but it is not in the same class of drugs as Adderall, and it is not a classical stimulant. Modafinil is off of patent, so you can get it generically, or order it from India. It’s a prescription drug, so you need to talk to a physician.
Related to the famous -racetams but reportedly better (and much less bulky), Noopept is one of the many obscure Russian nootropics. (Further reading: Google Scholar,, Reddit, Longecity, Its advantages seem to be that it’s far more compact than piracetam and doesn’t taste awful so it’s easier to store and consume; doesn’t have the cloud hanging over it that piracetam does due to the FDA letters, so it’s easy to purchase through normal channels; is cheap on a per-dose basis; and it has fans claiming it is better than piracetam.

Since each 400mg pill takes up 2 00 pills, that’s 4 gel caps a day to reach 800mg magnesium citrate (ie. 136mg elemental magnesium), or 224 gel caps (2x120) for the first batch of Solgar magnesium pills. Turning the Solgar tablets into gel capsules was difficult enough that I switched to NOW Food’s 227g magnesium citrate powder for the second batch.

*Results for individuals will vary, depending on existing health factors, lifestyle and level of fitness. The information contained on this site is intended to educate only and is in no way, a substitute for medical advice that your doctor or healthcare provider can offer, with whom you should always consult with before making any dietary changes. Information within should not be used for diagnosis, treatment or prevention of any disease. Testimonials and results contained within may not be an implication of future results. Testimonials on this site are based on the experiences of a few people and you may not have similar results. These statements have not been evaluated by the Food and Drug Administration.

My impression after the first two days (2 doses of 400mg each, one with breakfast & then lunch) was positive. I did not have the rumored digestion problems, and the first day went excellently: I was up until 1:30AM working and even then didn’t feel like going to bed - and I probably should have since I then slept abominably, which made the second day merely a good day. The third day I took none and it was an ordinary day. This is consistent with what I expected from the LEF l-threonate & TruBrain glycinate/lycinate, and so it is worth investigating with a self-experiment.
The Blood Brain Barrier (BBB) is similar in structure to the intestinal barrier (6) and is usually highly selective, allowing certain required metabolic products such as short chain fatty acids and amino acids to pass into the brain from our wider circulation but protecting the brain from potentially damaging components. When the BBB is compromised, unwanted translocation may occur such as allowing a bacterial invasion, which can alter the function of immune cells that are responsible for regulating inflammation. Chronic inflammation is associated with many mental and physical health problems, so it is therefore suggested that poor gut health can have a direct correlation to poor mental wellbeing, as a result of a compromised intestinal barrier and the negative impact this has on our brain’s own structural barrier (BBB) and resulting inflammation.
When taken regularly, Vitacern Brain Focus Supplement can help your mind function at its best for noticeable improvements in brain power. Our brain supplement promotes better concentration and improved focus to help you excel at work or school. In addition, our focus supplement aids in brain health throughout life for clearer thinking and memory support.

A picture is worth a thousand words, particularly in this case where there seems to be temporal effects, different trends for the conditions, and general confusion. So, I drag up 2.5 years of MP data (for context), plot all the data, color by magnesium/non-magnesium, and fit different LOESS lines to each as a sort of smoothed average (since categorical data is hard to interpret as a bunch of dots), which yields:
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B vitamins are also sold with claims of enhancing memory, usually rationalized by their reduction of homocysteine, a chemical in the blood that may affect circulation in the brain. No benefits from B vitamin intake have been demonstrated when it comes to memory or cognitive function except in the case of people who have high homocysteine levels due to a diet that is very low in B vitamins. There is some concern that folic acid, one of the B vitamins, may spur the growth of polyps in the colon at doses greater than 800 micrograms a day. Phosphatidyl serine is a natural component of nerve cell membranes and its promoters argue that a deficiency leads to impaired communication between nerve cells which in turn impairs cognitive function. Sounds reasonable, except that proper controlled trials have come up empty. The same goes for vinpocetine, a compound originally isolated from the lesser periwinkle plant by Hungarian chemist Csaba Szantay in 1975. It is widely used in Europe to treat strokes and memory problems with claims of increased circulation to the brain. It does indeed increase circulation, much like ginkgo, but there is no compelling evidence for memory improvement.
Sometimes called smart drugs, brain boosters, or memory-enhancing drugs, the term "nootropics" was coined by scientist Dr. Corneliu E. Giurgea, who developed the compound piracetam as a brain enhancer, according to The Atlantic. The word is derived from the Greek noo, meaning mind, and trope, which means "change" in French. In essence, all nootropics aim to change your mind by enhancing functions like memory or attention.
This research is in contrast to the other substances I like, such as piracetam or fish oil. I knew about withdrawal of course, but it was not so bad when I was drinking only tea. And the side-effects like jitteriness are worse on caffeine without tea; I chalk this up to the lack of theanine. (My later experiences with theanine seems to confirm this.) These negative effects mean that caffeine doesn’t satisfy the strictest definition of nootropic (having no negative effects), but is merely a cognitive enhancer (with both benefits & costs). One might wonder why I use caffeine anyway if I am so concerned with mental ability.
Because smart drugs like modafinil, nicotine, and Adderall come with drawbacks, I developed my own line of nootropics, including Forbose and SmartMode, that’s safe, widely available, and doesn’t require a prescription. Forskolin, found in Forbose, has been a part of Indian Ayurvedic medicine for thousands of years. In addition to being fun to say, forskolin increases cyclic adenosine monophosphate (cAMP), a molecule essential to learning and memory formation. [8]
The task of building a better mousetrap just got a lot harder. Scientists at Princeton University recently created a strain of smarter mice by inserting a gene that boosts the activity of brain cells. The mice can learn to navigate mazes and find or recognize objects faster than run-of-the-mill rodents. The news, announced in the Sept. 2, 1999 issue of the journal Nature, raises the possibility that genetic engineers may someday be able to help humans learn and remember faster, too.
Related to the famous -racetams but reportedly better (and much less bulky), Noopept is one of the many obscure Russian nootropics. (Further reading: Google Scholar,, Reddit, Longecity, Its advantages seem to be that it’s far more compact than piracetam and doesn’t taste awful so it’s easier to store and consume; doesn’t have the cloud hanging over it that piracetam does due to the FDA letters, so it’s easy to purchase through normal channels; is cheap on a per-dose basis; and it has fans claiming it is better than piracetam.
Microdosing with LSD: LSD (lysergic acid diethylamide) is derived from a chemical in rye fungus. It was originally synthesized in 1938 to aid in childbirth and is widely known for its powerful hallucinogenic effects, but less well known for what I personally use it for: inducing intense sparks of creativity when a merging of the left and right brain hemispheres is the desired goal, such as a day on which I need to do a great deal of creative writing or copywriting. It also works quite well for keeping you “chugging along” on a sleep deprived or jet-lagged day. Similar to psilocybin, LSD affects serotonin levels in the body. By deactivating serotonin mechanisms, brain levels of serotonin are dramatically increased after a dose of LSD, which also causes a “feel good” dopamine release. It is thought that LSD may reduce the blood flow to the control centers of the brain, which weaken their activity, allowing for a heightened brain connection. This enhancement in brain connectivity is most likely why users experience increased creativity and unique thought patterns. Therapeutic effects of LSD include treating addiction, depression, anxiety, obsessive-compulsive disorder, cluster headaches, end-of-life anxiety, resistant behavior change, and increase reaction time, concentration, balance, mood, and pain perception (See additional studies here, here, here, here, here, here, here and here). A typical microdose of LSD is between 5 and 20 micrograms. My own approach for using LSD is quite simple and is called the “volumetric dosing” method. I purchase a blotter paper of LSD or P-LSD, then cut out 100 micrograms with scissors and drop one square tab into a 10-milliliter dropper bottle of vodka. I then know that a single drop of the liquid contains a neat 10 micrograms of LSD, and don’t risk the inaccurate dosing so notoriously associated with simply cutting out and placing the blotter paper into the mouth. Interestingly, I’ve found that if you take slightly too much LSD, a small dose of CBD (e.g. 10-20 milligrams) seems to knock the edge off.
Sun: This is a day I devote to spiritual disciplines and deep personal exploration, along with a hefty dose of neurogenesis, and for a day such as this, I’ll use a more potent neuron sprouting and ego-dissolving mix – most notably a blend of psilocybin microdose with Lion’s Mane extract and niacin (if the skin flush and increased blood flow from niacin tends to be too much for you, you can also use “nicotinamide riboside”, a form of vitamin B3 that has similar effects without the flushing).
At this point, I began thinking about what I was doing. Black-market Adderall is fairly expensive; $4-10 a pill vs prescription prices which run more like $60 for 120 20mg pills. It would be a bad idea to become a fan without being quite sure that it is delivering bang for the buck. Now, why the piracetam mix as the placebo as opposed to my other available powder, creatine powder, which has much smaller mental effects? Because the question for me is not whether the Adderall works (I am quite sure that the amphetamines have effects!) but whether it works better for me than my cheap legal standbys (piracetam & caffeine)? (Does Adderall have marginal advantage for me?) Hence, I want to know whether Adderall is better than my piracetam mix. People frequently underestimate the power of placebo effects, so it’s worth testing. (Unfortunately, it seems that there is experimental evidence that people on Adderall know they are on Adderall and also believe they have improved performance, when they do not5. So the blind testing does not buy me as much as it could.)
Beans. Beans are "under-recognized" and "economical," says Kulze. They also stabilize glucose (blood sugar) levels. The brain is dependent on glucose for fuel, Kulze explains, and since it can't store the glucose, it relies on a steady stream of energy -- which beans can provide. Any beans will do, says Kulze, but she is especially partial to lentils and black beans and recommends 1/2 cup every day.

A poster or two on Longecity claimed that iodine supplementation had changed their eye color, suggesting a connection to the yellow-reddish element bromine - bromides being displaced by their chemical cousin, iodine. I was skeptical this was a real effect since I don’t know why visible amounts of either iodine or bromine would be in the eye, and the photographs produced were less than convincing. But it’s an easy thing to test, so why not?
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:
Took pill 1:27 PM. At 2 my hunger gets the best of me (despite my usual tea drinking and caffeine+piracetam pills) and I eat a large lunch. This makes me suspicious it was placebo - on the previous days I had noted a considerable appetite-suppressant effect. 5:25 PM: I don’t feel unusually tired, but nothing special about my productivity. 8 PM; no longer so sure. Read and excerpted a fair bit of research I had been putting off since the morning. After putting away all the laundry at 10, still feeling active, I check. It was Adderall. I can’t claim this one either way. By 9 or 10 I had begun to wonder whether it was really Adderall, but I didn’t feel confident saying it was; my feeling could be fairly described as 50%.
Fortunately for me, the FDA decided Smart Powder’s advertising was too explicit and ordered its piracetam sales stopped; I was equivocal at the previous price point, but then I saw that between the bulk discount and the fire-sale coupon, 3kg was only $99.99 (shipping was amortized over that, the choline, caffeine, and tryptophan). So I ordered in September 2010. As well, I had decided to cap my own pills, eliminating the inconvenience and bad taste. 3kg goes a very long way so I am nowhere close to running out of my pills; there is nothing to report since, as the pills are simply part of my daily routine.

The nootropics I’m taking are called RISE, and they're made by a company called Nootrobox, which was started by Geoffrey Woo, a young Stanford computer science graduate. There's no one common ingredient in nootropics; what unites them is the intent to improve brain performance. The RISE stack, which costs $29 plus shipping for 30 pills, contains 350 mg of bacopa monnieri powder (an herb that is commonly used medicinally in South Asia), 100 mg of L-theanine (an amino acid found in green tea), and 50 mg of caffeine (about the amount in a can of Diet Coke). Like most nootropics, the RISE stack itself isn't FDA-approved for use as a cognitive enhancer, but Nootrobox says that the compounds within it are approved as dietary supplements. "We use the precise ingredients at the right dosages and the right ratios as supported by double-blind, peer-reviewed clinicals," Nootrobox's site claims.
My answer is that this is not a lot of research or very good research (not nearly as good as the research on nicotine, eg.), and assuming it’s true, I don’t value long-term memory that much because LTM is something that is easily assisted or replaced (personal archives, and spaced repetition). For me, my problems tend to be more about akrasia and energy and not getting things done, so even if a stimulant comes with a little cost to long-term memory, it’s still useful for me. I’m going continue to use the caffeine. It’s not so bad in conjunction with tea, is very cheap, and I’m already addicted, so why not? Caffeine is extremely cheap, addictive, has minimal effects on health (and may be beneficial, from the various epidemiological associations with tea/coffee/chocolate & longevity), and costs extra to remove from drinks popular regardless of their caffeine content (coffee and tea again). What would be the point of carefully investigating it? Suppose there was conclusive evidence on the topic, the value of this evidence to me would be roughly $0 or since ignorance is bliss, negative money - because unless the negative effects were drastic (which current studies rule out, although tea has other issues like fluoride or metal contents), I would not change anything about my life. Why? I enjoy my tea too much. My usual tea seller doesn’t even have decaffeinated oolong in general, much less various varieties I might want to drink, apparently because de-caffeinating is so expensive it’s not worthwhile. What am I supposed to do, give up my tea and caffeine just to save on the cost of caffeine? Buy de-caffeinating machines (which I couldn’t even find any prices for, googling)? This also holds true for people who drink coffee or caffeinated soda. (As opposed to a drug like modafinil which is expensive, and so the value of a definitive answer is substantial and would justify some more extensive calculating of cost-benefit.)
The original magnesium l-threonate caused me no apparent problems by the time I finished off the powder and usage correlated with better days, further supporting the hypothesis that magnesium helps it. But l-threonate would be difficult to cap (and hence blind self-experiment) and is ruinously expensive on a per-dose basis. So I looked around for alternatives for the followup; one of the most common compounds suggested was the citrate form because it is reasonably well-absorbed and causes fewer digestive problems, so I could just take that. Magnesium oxide is widely available it looks cheap, but the absorption/bioavailability problem makes it unattractive: at a 3:5 ratio, an estimate of 4% absorption, a ZMA formulation of an impressive-sounding 500mg would be 500 \times \frac{3}{5} \times 0.04 = 12mg or a small fraction of RDAs for male adults like 400mg elemental. (Calcium shouldn’t be a problem since I get 220mg of calcium from my multivitamin and I enjoy dairy products daily.)
This supplement contains Vitamins A, C, D, E, B1, B2, B3, and B6, Folate, Biotin, Pantothenic Acid, Copper, Calcium, Selenium, Iron, Manganese, Chromium, Potassium, Molybdenum, Iodine, Magnesium, Zinc, and 692mg of Synergistic and Proprietary Formulation that includes Dimethylaminoethanol, L-Glutamine, Bacopin, L-pyroglutamic Acid, Phyosphatidylserine, DHA Concentrate, Choline, Inositol, N-Acetyl Tyrosine, Bilberry Fruit, Gamma Aminobutyric Acid, Grape Seed Extract, Vinpocetine, Trace Lyte Electrolyte Concentrate, Huperzine A, Boron, and Vanadium.

Took pill 12:11 PM. I am not certain. While I do get some things accomplished (a fair amount of work on the Silk Road article and its submission to places), I also have some difficulty reading through a fiction book (Sum) and I seem kind of twitchy and constantly shifting windows. I am weakly inclined to think this is Adderall (say, 60%). It’s not my normal feeling. Next morning - it was Adderall.
I was contacted by the Longecity user lostfalco, and read through some of his writings on the topic. I had never heard of LLLT before, but the mitochondria mechanism didn’t sound impossible (although I wondered whether it made sense at a quantity level14151617), and there was at least some research backing it; more importantly, lostfalco had discovered that devices for LLLT could be obtained as cheap as $15. (Clearly no one will be getting rich off LLLT or affiliate revenue any time soon.) Nor could I think of any way the LLLT could be easily harmful: there were no drugs involved, physical contact was unnecessary, power output was too low to directly damage through heating, and if it had no LLLT-style effect but some sort of circadian effect through hitting photoreceptors, using it in the morning wouldn’t seem to interfere with sleep.
Jump up ^ Sattler, Sebastian; Forlini, Cynthia; Racine, Éric; Sauer, Carsten (August 5, 2013). "Impact of Contextual Factors and Substance Characteristics on Perspectives toward Cognitive Enhancement". PLOS ONE. PLOS. 8 (8): e71452. Bibcode:2013PLoSO...871452S. doi:10.1371/journal.pone.0071452. ISSN 1932-6203. LCCN 2006214532. OCLC 228234657. PMC 3733969. PMID 23940757. Retrieved April 5, 2014.