> neurophysiologist Louisa Nicola Had a quick look at her Instagram - "80% of brain gray matter is modifiable by exercise so by hitting the gym you can now sta

> neurophysiologist Louisa Nicola Had a quick look at her Instagram - "80% of brain gray matter is modifiable by exercise so by hitting the gym you can now stave off Alzheimer's by 20 years" > 95% of Alzheimer’s is now seen in people without a genetic predisposition to it That's with our current knowledge of the genetic aspects of Alzheimer's, which probably isn't complete. > That is to say that people’s lifestyle decisions around sleep, food, and exercise are the issue Could be due to other reasons as well. Or most likely a combination of genetic + environmental. That's why these kind of illnesses (schizophrenia, depression) are so hard to crack, there's so many variables.