Low blood flow is the number one brain imaging predictor of Alzheimer's disease. It goes with with brain fog. So what gives you low blood flow in your brain? Caffeine constricts blood flow to the brain. Nicotine, marijuana, alcohol, not sleeping, being overweight. I published three studies on 33,000 people. As your weight goes up, the size and function of your brain goes down, which would scare the fat off anyone. (24:46–24:51)
CLAIM
Asserts that caffeine reduces blood flow to the brain.
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