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Eddie takes one clear pill.
You know the scene from Limitless.
His mind lights up like a city at night. Each page he reads sticks the first time. He learns piano in three days.
Most of us want a small taste of that pill.
So we go to the store. And there it sits on the shelf… a green bottle of ginkgo.
The leaf comes from one of the oldest trees on Earth. Shops have sold it for memory for a long time. The pitch is simple: take ginkgo and your mind gets sharp.
I wanted to see if the data backs that up.
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Here’s how I check a claim like this.
I skip the ads and go straight to the trials. Then I look for big groups, long runs, and a dummy pill to compare. To find them, I use the same deep research tools hedge funds pay for. They cost me over $20,000 a year.
For ginkgo, one trial towers over the rest.
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// The Facts
It’s called GEM, and it ran at five top medical centers. Over 3,000 adults aged 75 and up took part.
Half took 120 mg of ginkgo twice a day. The rest got a dummy pill. Then the team tracked them for about six years.
At the end, the ginkgo group had 277 cases of dementia. The dummy pill group had 246. In other words… the leaf did no better than a sugar pill.
People: 3,069 · Dose: 120 mg x2/day · Cases: 277 vs 246
→ Source: DeKosky et al., JAMA 2008 (via UVA Health)
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Not worth your money for memory.
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Here’s the good part, though. Your brain can grow at any age.
A team led by Kirk Erickson ran a one-year trial with 120 older adults. Some took brisk walks three days a week. The rest did stretch and tone classes.
In the walkers, the part of the brain that files new memories grew by 2%. Bigger growth was linked to better memory scores. And the price of entry is a pair of shoes.
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// Brain Hack
The Brisk Walk Plan
This is the plan from the trial, made plain and short.
I tried it myself. My walk days feel clear and bright, like a fresh cup of coffee with no crash.
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Pick a loop: Choose a route you like, close to home. |
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Start small: Walk 10 to 15 minutes at a brisk pace. |
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Build up: Add five minutes at a time until you reach 40. |
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Find the pace: Aim for three walks a week. You should be able to talk, but not sing. |
That talk test keeps you in the same zone the trial used.
People: 120 · Length: 1 year · Memory hub: +2%
→ Source: Erickson et al., PNAS 2011
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The best brain pill on the shelf might be the shoes by your door.
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