Is hair loss hereditary? My husband is worried.

My father-in-law has no hair.

I'm worried that my husband might be affected by my father's hair loss genetics.

I am in my early 50s, but I do not yet see any special symptoms of hair loss.

I'm worried that even if it's not now, my hair might fall out significantly later.

Some say it passes through one generation... but I think that's just how it is.

I think I should pay attention and do it carefully.

Since there were no obvious symptoms, I neglected to take proper care.

Would taking hair loss medication like this in advance help prevent it and be beneficial?

This is a field I have no knowledge of at all.