Thanks for another interesting and thought provoking post.

I think this is an issue with health supplements as well as medication(like your multi vitamin mentioned at the start) particular protein supplements. If you eat a good balanced diet you should be getting all you need.

Healthy eating, exercise socialisation and an active social life and a natural remedy here and there, can help with many things, we don't need as much medication as "they" try to sell us.
There aren't as many studies into the benefits of these holistic, natural (and largely free) solutions.

A good rule of thumb?
Don't eat(or take) anything with an advertisement

How many adds for fruit and veggies do you see out there?
Or advocating socialising for depression?

There are obvious exceptions and modern medicine has done amazing things , I wouldn't turn my nose up at medication when it was really needed .
But I think we all need to be a bit more conscious of what people are trying to sell us and ask ourselves what their motivations are.

Its your health and your life so take it into your own hands.