We naturally begin to lose things as we age -nutrients like CoQ10, B12 levels, Chromium levels, collagen and elastin, DHEA levels all decline with age. We lose bone density and muscle mass as well as our thymus begins to shrink and our thymus hormone levels decrease. HCL (the stomach acid key to optimal digestion) levels drop after the age of 40. It doesn't sound good.
But how you age is up to you.
Preventative medicine needs to be taken more seriously and needs to be practiced on a regular basis.
How do you want to age?