Time Waits For No One...
Biological aging is the greatest health threat to humanity today. It causes more disease and suffering in the world than all infectious diseases (HIV, malaria, etc.) or any other cause (e.g. poverty, war, natural disaster, etc.). The inborn aging process causes cancer, heart disease, stroke, AD, joint pain, vision and hearing impairment, etc.
The harms of senescence (even if we exercise and eat a healthy diet) are certain, severe and universal. The diseases of aging afflict both rich and poor, and developed and developing countries. And, unless the biological clocks we have inherited from our Darwinian past are modified, it is highly likely that all future generations of human beings that shall ever live on this planet will suffer one or more of the diseases of aging.
In light of the unique health challenges facing the world's aging populations, the most important knowledge humans can acquire today is knowledge about the biology of aging: why do we, as a species, age at the rate we do? why does aging leave our bodies and minds susceptible to disease? And, most importantly, how can we retard or ameliorate the harmful effects of biological aging?