Nutrients For Brain Health & Performance | Huberman Lab Podcast #42

KEYPOINTS

• 01

  Food builds the structural fat of your neurons

  Neuronal membranes are made of structural fats, not the storage fat around the belly. They consist mainly of essential fatty acids and phospholipids, so what you eat literally provides the building blocks of the cells you think with. Since you don't replace most neurons over a lifetime, Huberman frames these nutrients as long-term maintenance.

• 02

  Most people get enough omega-6 but not enough omega-3 (EPA)

  He suggests at least 1.5 g and ideally 2–3 g of EPA a day, counting EPA itself rather than total fish oil. Sources include mackerel, salmon, herring, oysters, sardines, anchovies and especially caviar, with chia, walnuts and soy for non-fish eaters, as well as krill or algae oil. He cites literature that 1–3 g of EPA a day can improve mood on par with some antidepressants, and allow lower antidepressant doses.

• 03

  Phosphatidylserine gives modest but real cognitive benefits

  In at least three studies, 300 mg a day of this lipid-like compound improved cognition, and in at least five it slowed cognitive decline. The effects were statistically significant but not large. Meat and fish (and, oddly, cabbage) supply it, so regular fish eaters probably get enough; Huberman himself does not supplement it.

• 04

  Choline feeds the acetylcholine 'highlighter' behind focus

  Acetylcholine from nucleus basalis boosts activity in selected brain areas relative to their neighbors, which is the basis of focus. Hindbrain acetylcholine neurons support general alertness, and many Alzheimer's drugs target this pathway. Egg yolks are the top source, with potatoes, nuts, seeds, grains, fruit and some fish as alternatives. He suggests 500 mg to 1 g a day, supplementing if needed to reach 1–2 g.

• 05

  Creatine is a brain fuel, especially if you eat no meat

  A 2021 review (first author Roschel) found that 5 g a day of creatine monohydrate improves cognition in some contexts, most clearly in people who get no creatine from meat. There is emerging, not yet established, evidence that it may help mild depression through frontal circuits. Huberman cautions that water retention varies and that creatine may raise DHT, which could affect hair in sensitive people.

• 06

  Anthocyanins in dark berries protect DNA and slow cognitive decline

  Blueberries, blackberries and black currants are rich in them. Supplementation with blueberry extract reduced DNA damage and modestly slowed decline in elderly patients (Afzal 2019 review). For whole fruit, he cites about 60–120 g of fresh blueberries a day as enough to shift the system; whether the effect works on neurons directly or through inflammation is unclear.

• 07

  Glutamine may protect cognition from low oxygen and curb sugar cravings

  Glutamine supplementation has offset cognitive effects of altitude and oxygen deprivation. Huberman reasons it could matter for sleep apnea, which contributes to cognitive decline. Gut neurons that sense glutamine send satiety signals, which may reduce sugar cravings. Doses run from 1 to 10 g a day, with cottage cheese, meat, eggs, beans, cabbage and spinach as food sources.

• 08

  Gut neuropod cells steer food choice below awareness

  Diego Bohórquez at Duke characterized these cells in the gut lining. They sense amino acids, sugars and fatty acids, and signal through the nodose ganglion to trigger dopamine release, driving you to seek more of that food. Processed foods exploit this with 'hidden sugars' you can't taste (a point Robert Lustig emphasizes), but the same pathway can reinforce healthy foods like omega-3-rich ones.

• 09

  Artificial sweeteners aren't simply good or bad; context decides

  Huberman says sweeteners taken alone are not the problem. Consumed together with glucose-raising foods, they can teach the body to over-release insulin. He also mentions a Nature paper showing that certain sweeteners can disrupt the gut microbiome, with results that may differ between saccharin and sucralose.