I CONQUER AGEING by Eating the Top 3 Vitamins! Harvard physician John Scharffenberg, aged 100 I CONQUER AGEING by Eating the Top 3 Vitamins! Harvard physician John Scharffenberg, aged 100 "Vitamin D is a very important vitamin so many of our people are deficient in vitamin D more people are deficient in B12 than we ever thought." Dr…