- Programmed-based: which says that aging is a genetically regulated predetermined process, occurring on a fixed schedule.
- Damage-based: which says that aging is the result continuous damage accumulation as a result of interaction with the environment, exposure.
Allostatic load is a product of your genes and their response to environmental exposures. These exposures may have their roots in your grandmother’s and your mother’s health, at the time of pregnancy (epigenetics), and includes all of your lifetime, lifestyle habits.
The healthier you are, the less your body has to work to maintain homeostasis, the less the allostatic load, the slower the rate of photocopying, the slower the rate of aging. And, obviously, vice-versa with poor health
Ultimately, your genes (25-30%) + your exposure (70-75%) = your state of health and your biologic age.