I am a middle aged woman losing my hair, what can I do? Is this a hormonal thing? Can I take something to rebalance myself and reverse this trend?

Menopause or ? It could be menopause or something else. There is no way to "rebalance" yourself. Estrogen can delay the deficiency, but there is controversy about estrogen administration. Probably safe for limited time at low dose. There are other causes for hair loss -- see your doctor for an evaluation.