Can sympathize with the frustration of losing your youth, I'm male in early 20's as well - 'invisible illnesses' very difficult to keep your head above water. My only advice would be to say that you will probably have to try to treat all or atleast most the issues at once. AF won't ever get better if you have candida, candida won't get better if you have heavy metals, heavy metals can't be chelated unless your adrenals are stronger etc. it goes round and round. My favorite vitamin is zinc because it can help with a lot of these issues at once, but see what works for you.