What are the best supplements for thinning hair and hair health in general? fish oil? b complex..? how is zinc? how good is zinc for mens health?

First: rule out: disease: thyroid, scalp infection, formal vitamin defiviency testing, stress, tension, anxiety or hormonal issues. Is therea pattern of male baldness in your family? Get a medical evaluation.

Healthy hair: Get adequate sleep,avoid excess sugar & fat, v carbonated drinks, eat enough protein, exercise regularly. Biotin helps (don't over do it). Insure you have adequate Iron (like kale & other dark green leafies), Omega 3 fatty acids (like walnuts),vitamin E (fruits & veggies), D & B vitamins & zinc. Avoid sulfates & formaldehyde in shampoos). Avoid excessive blow dry heat.