26M Hair Problem. Is it because of gut health?

I have thick dense hair with slight recession.But I have seen I have almost 20 white thick hair strands. I remember when I was 18yo I had only two white hair strands .

Please advise me how to stop this process of whitening.friends are saying maybe this is due to liver or gut issue.

Family history: my dad is bald cuz of genetics so is my paternal grandfather. Mom and maternal grandfather has full hair .