I'm concerned about hair loss. What should I do to slow down the progression?

As I get older, my hair loss gradually worsens despite my efforts. It's a natural part of aging, but everyone wants to slow down the progression. Currently, I am using anti-hair loss shampoo. However, I don't really believe that it will be very effective in preventing hair loss. Is there anything other than shampoo that can help slow down hair loss and is good for hair health?