The more you eat the more you age.
the less you eat the more you live.
avoid meat,salt,spicy foods,bitter foods,sweet foods.
A good diet is fruitarianism.
a better diet is roots,seeds,pine ,nuts.
Ideal diet would be vitamin water and water-dissolved supplements.
Fast at least once per week.
Fast for 40 days once a year.
taoism, hinduism and even christianity have examples of inedia(living without food) so its possible.
Some people died but they weren't prepared.
you need to nofap(semen has nutrients) and undergo urine therapy and sungaze.