Longevity is only desirable if it prolongs being young, but does not prolong being old.
We can't avoid age. However, we can avoid some aging. Continue to do things. Be active. Life is fantastic in the way it adjusts to demands; if you use your muscles and mind, they stay there much longer.
It is health that is the real wealth, and not pieces of gold and silver.
Ageing is like any deterioration of the body. It fulfils every category of what we call a disease except one: it affects more than half the population.
If we eat wrongly, no doctor can cure us. If we eat rightly, no doctor is needed.
Our gut is a computer system, with self-modifying code, and our food is the data.
Food is not just calories or energy; food is information, instructions that upgrade or downgrade your biology with every bite.