BrainSmart

We check what brain supplements claim against the studies and give you plain answers each week.

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More than 90% of your body's serotonin is made in your gut. The catch the "happy chemical" headlines skip: gut serotonin doesn't cross into your brain. Your brain makes its own. Nobody has shown that changing gut serotonin changes mood in people.

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Your gut and brain really do signal both ways. How much that matters for mood is less clear: much of the clearest evidence comes from mice and rats, and studies in people mostly show links.

Signals travel through nerves, the immune system and substances made by gut microbes.

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After 17 hours awake, hand-eye coordination fell to the level seen at 0.05% blood alcohol, a 1997 study in Nature found. Our guide puts sleep first for focus, and one of its plainest tips is going to bed and getting up at the same times.

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Leafy greens still earn their place on the plate. The headline number just hasn't held up in a trial. More on the MIND diet and what each study did and didn't show: https://t.co/aMNPad2BVG

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The MIND diet's "seven and a half years younger" headline came from an observational study. A 2023 trial in the New England Journal of Medicine split 604 older adults between the MIND diet and a comparison diet for three years. Thinking scores showed no significant difference.

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Losing around 2% of your body's water is enough to impair attention, a 2012 review in the Journal of the American College of Nutrition found. Thirst is a late signal, so steady sips through the day are more reliable than waiting for it. https://t.co/jdRtBBMm5F

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A study in Neurology Clinical Practice tested 10 US cognitive supplements labelled with piracetam-type ingredients. It found five unapproved drugs, at unpredictable doses. If a label leans on the word nootropic, ask what was tested, and in whom. https://t.co/2im8y3cZIW

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One large egg has about 147 mg, over a third of the 400 mg a day Europe's food safety authority sets for adults. The brain research on choline is mostly observational, so treat that side as unproven. https://t.co/pnK8Ov88cq

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Only about 8% of adults in the US NHANES survey got the recommended amount of choline. Among adults who ate eggs it was 57.3%. Among adults who ate none, 2.4%.

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2/ In ACHIEVE, 977 people aged 70 to 84 with hearing loss had hearing aids or not. With them, decline in thinking skills was about 48% slower over three years, but only in the 238 at higher risk. The 739 healthier volunteers saw no clear difference. https://t.co/tArke3MN0I

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1/ A year of brisk walking, building up to 40 minutes three times a week, grew the front part of the hippocampus by about 2% in adults aged 55 to 80 (Erickson, 2011). That's roughly one to two years of normal age-related shrinkage made back.

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Of the thinking skills studied, attention takes the biggest hit from lost sleep (Lim and Dinges, 2010), and even mild dehydration measurably impairs attention (Adan, 2012). Fix both before spending money on anything for focus. https://t.co/HeGjopBocF

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🧠 Keeping our brains sharp as we age is like a thrilling game of chess! 🕹️ Challenge yourself daily, fuel with good food & laughter. What's your top #BrainHealth tip for aging like a champ? 💪 Let's exchange wisdom! #Brainsmart #HealthyAging

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Think brain food is just for exams? 🧠 Think again! Feed your neurons like they're gourmet dining - omega-3, antioxidants & more. Because your brain can't run on donuts alone. 🍩🚫 Maybe a side of blueberries with that thought? https://t.co/1Vt8CCQ59N🫐 #BrainSmart

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Unlock your brain's hidden potential with #BrainSmart brain supplements! 🧠💪 Boost memory and cognitive function while turning into a superhuman genius. Side effects may include outsmarting your friends at trivia nights and impressing your boss with lightning-fast thinking! 😉

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@Fertility_Smart Trying to start a family? Boost your chances with l-arginine! This amino acid helps increase sperm count and motility, while also improving blood flow to reproductive organs. Plus, it's a fun word to say. https://t.co/niGT88YRkC #fertility #health #larginine

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Upgrade your brain to genius status! 🧠💡 Unleash your inner Einstein with #BrainSmart brain supplements! Boost memory, focus, and mental agility, while effortlessly solving complex problems. Say goodbye to brain fog and hello to limitless potential! 🚀 https://t.co/VrOJpCi8BH

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@pranjalc1 Yes it is true

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@MarriottImages #RewardsPoints 160 feet

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Beet juice and exercise - a great combination to keep your brain healthy
https://t.co/G1GmnnuszL
#beets #yourbrain #exercise