gray hair!

I have had premature gray hair. I am 32 and have had gray since I was probably 12 years old. Has anyone here reversed GRAY hair.

I take blackstrap molasses ( 1 tbsp) every day. I drink lots of water. Eat very healthy home cooked foods.

I have heard grays can be caused by under-active thyroid? Or mercury toxicity. Or Zinc deficiency? ...

What ever it is are there any testimonies of ppl who have reversed gray hair. What has worked for you.

thanks...