Exposome We often hear that our genes define our destiny — but science now tells a different story. What truly shapes your biology, your aging process, and even your susceptibility to illness is not just your genome , but your exposome . The exposome  represents the sum of all environmental exposures we encounter throughout life — the air we breathe, the food we eat, the products we use, and even the stress we carry. Unlike our fixed genome, the exposome is dynamic, constantl