I had a relatively big correspondence with a nutrition community (mainly bodybuilding) and observed that people appreciated the scientific facts... but they hate to hear that something does not work. They want hope.

same with hair loss, weight-loss, acne/skin problems, ugliness, legal recreational drugs, small dicks, titts, aging, and really big school/cognitive performance. Oh, and of course investment and technical analyses/prediction of chaotic systems.

My mom started to watch home-shopping TV. And she thought its a scientific lecture about nutrition, in the end she was convinced that she needs to buy amino acids. ... the most abundant shit on earth....we are silly not to fool people