Should i be concerned if my age is 21(male).i started getting gray hairs at very minir extent.how to prevent?

Grey Hairs @ 21: Grey hairs can show up at any age. Occasional and sporadic grey hairs at a young age are annoying, but not likely the sign of any disease process. The treatment of grey hairs is the largest single beauty expense. To date, there is no effective treatment except hair coloring or plucking.

Gray hair: First thing to know is that genetics plays the biggest role - we can't change our genetics. To reduce risks of early graying & hair loss: 1. Don't Smoke. 2. Correct Zinc, Vit B or other nutritional deficiencies. Vegans are at risk for Vit B12 deficiencies. 3. Ensure that your thyroid is healthy. 4. Diets> Eggs are rich in biotin. Dark greens are high in Vit A & C. Omega 3 fatty acids can be >