I'm worried that my hair loss is starting.

Both my husband and I have been experiencing severe hair loss lately. I have naturally thin hair, and after giving birth, I lost a lot and have been maintaining that state. My husband is losing hair to the point where he's wondering if it's okay to lose this much. I am using anti-hair loss shampoo, but my husband wants to take hair loss medication.

Are there any differences between men and women in hair loss treatment or procedures? Or do they undergo similar methods? I'm curious.