Googling done now, and there are around 50 hormones in the human body, but doctors are reluctant to say this is a hard and fast number as new ones are being discovered. Personally, I find hormones to be one of the most interesting parts of the body, because their cascade of effects reaches so far! This triggers that, which triggers this, which causes that, leading to this effect and then another trigger, and then something else has happened in the meantime. And in the end it affects how you feel, which is really the bottom line anyway! Whenever I read health articles, I find it very misleading to say that one thing changes this one other thing, and you should make that one small change and then you'll be magically healthier. So maybe we will just seek to understand what's going on, rather than go straight for the fix.