I've been on a ketogenic diet for the past two months, and I've noticed less "down days", negative thoughts, and a more positive outlook on life in general.
This won't stop people who want drugs from buying them. What it'll do is prevent some people from buying them from reputable sellers with positive feedback. Now they might have to find some shady dealer who could be selling them rat poison.
Technical Analysis can be useful, because it enables a systematic approach to trading - eliminating subjectivity when making trading decisions. Consistently exploiting some edge with a well defined set of rules and conservative risk management is key.