I used to have a job where the main reading material was the Merck Index, CRC Handbook, PDR, and such. I was intending to become a medicinal chemist. But I got sick, and the doctors had no answers. When I was recovering I went to the Eccles Medical Library at the UofU every day, day in and day out, for about a year or more, reading everything I could.
Our Pharmaceutical industry, from A to Z is held by a group of majority stockholders whose money originally came from Standard Oil when it was even more of a cartel than it is today, loosely called "The Rockefellers". "The Rockefellers were large stakeholders in German pharmaceuticals like Bayer and Pfizer and IG Farben, folks who were complicitly involved in the Nazi death camps as well as our own unethical medical experiments, largely "legitimized" by some beholden university research people.
I have done consulting work for health food companies in regard to the physiological effects of their products. The bottom line is that petoleum-based compounds generally have more severe side effects than natural-sourced unrefined "foods" or "herbs", but even natural things will have effects on your liver, pancreas, kidneys and in general on every organ of your body. Everything can be overdone, abused, and misused with all kinds of ill effects. In my observation, the powerful BigPharma lobbies are working to capture the health market and absolutely exclude competitors, particularly the small fry competitors, since the big fish are so much owned by the same people ultimately it's all in the family.
I believe these folks are not interested in actually curing our diseases and everybody knows they are making tons of money pushing their pills. Unfortunately for those who might want to use something like marijuana sensibly as a herb, or even make rope or manila envelopes from it, it is in the interests of our elites who operate the levers of our government to suppress it. The invention of Nylon which could be used for rope created the lobby to criminalize hemp.
Your best strategy for having a good life is just to avoid substance abuse and keep your liver, pancreas, and kidneys from getting plugged up with chemicals they can't clear very well. Includes eating to much of anything, drinking too much of anything, and avoiding air pollution generally.
And vote for people who will limit the power of government as our only chance to limit the influence of lobbyists working for evil men determined to set up/maintain their cash cow cartels.