less control. and once somebody gets clean, it can take months before they begin to feel clear-headed. which is why i sort of hate 28-day prals because i'm like, they haven't really learned anything because their brains still aren't clear. >> larry: are there drugs for the brain, to help the brain? >> we have natural medicines and we have antidepressants, anti-psychotic medicines. we have anti-seizure medicines which interestingly help a lot of people with anxiety and depression. so medicines -- but i always say food is your best medicine. we know if you eat a bad diet, you have a higher risk of dementia and depression. >> larry: what toes depression do to the brain? or does the brain cause the depression? >> well, depression is the effect of various factors. what's happening both within a person and in their brain obviously, and also usually in