Supplements are great because at worst they work like a placebo. There is a ton of evidence that placebos actually work better than real FDA approved stuff (in

Supplements are great because at worst they work like a placebo. There is a ton of evidence that placebos actually work better than real FDA approved stuff (in some cases) because there is a metric tonne of crap we don't understand about the brain itself and it's ability to heal the body. At best they actually affect the gut microbiome in some way (mostly probiotics) which, in many cases, are also backed by clinical studies that show has effects (placebo controlled). We'll be finding out in the coming years that the gut microbiome is the "second brain" or the brain controlling the brain. Everything from mood disorders to major diseases like ALS to auto-immunity of the thyroid may start with good or bad bacteria in our systems. This is the cutting edge research, nothing in a book in the last 3 years.