I realized earlier this year I was facing this exact problem - a lot of foods and supplements I was taking was causing a lot of mental fogs and I couldn't figure out what. Alcohol had serious lagging day effects from its impact on sleep and overall productivity.

I wrote https://betterself.io/ in response to this (but I've been a little intimidated to put this on HN since it doesn't do at least five more features (it's always five more ...) before the critics rip it to shreds.