Cellular senescence is a universal biological mechanism affecting all living organisms. Several situations leading to senescence are linked to the presence of DNA or nuclear envelope damage over time. Unfortunately, we cannot get younger with time, but there are ways to limit aging by eating a diet rich in vitamins that are essential to the proper functioning of our body. The capacity for cell renewal decreases with age. This decrease does not allow the body to react efficiently to different aggressions. Philosophically, old age is of little interest to philosophers, but scientifically, cell death "apoptosis" is genetically programmed. Growing old and dying is a right engraved in our genetic heritage, the luckiest will reach the oldest age. A good old age must be prepared in advance by a good life hygiene. Aging can be slowed down or accelerated depending on the lifestyle of each person.