Theory: aging is caused from the inflammation process. If we reduce inflammation, the rate that we age will be reduced.
Homocysteine is an amino acid in the inflammation cascade which is used as a marker for the level of inflammation in our body.
Keeping Homocysteine low will slow the rate of aging. Two vitamins will lower Homocysteine. These are Thiamine(Vitamin B1) and Folic Acid(Vitamin B9).
In addition Bioidentical hormone replacement such as Testosterone for men and Estrogen for women reduces the rate of aging along with Vitamin D replacement.