Q My hair is getting thinner, and I wondered whether it was due to too much testosterone. But then someone said it could be to do with my thyroid. What’s the best way to know?
A Hair thinning is a common concern and can be influenced by multiple hormones, so it’s worth investigating thoroughly rather than assuming a single cause. Elevated testosterone or, more accurately, its by-product dihydrotestosterone (DHT), can contribute to what’s called pattern hair loss, particularly around the temples and crown (as often happens in men). However, thyroid health plays a major role too, as an underactive thyroid can slow hair growth and cause diffuse shedding, while an overactive thyroid may make hair brittle and fine. Low oestrogen levels, low ferritin (iron stores), vitamin D deficiency, andhigh stress…
