Summary:

• **What is the Exposome?** The exposome is the study of all the things in our environment that affect our health, like air pollution, food we eat, stress, and chemicals we're exposed to throughout our lives. Scientists believe understanding the exposome could help us figure out why people get sick and how to prevent diseases better than ever before.

• **Why It Matters for Disease:** Instead of just looking at genes (which we're born with), the exposome shows us that our surroundings and daily experiences play a huge role in making us healthy or sick. This could change medicine because doctors might be able to help us stay well by understanding and improving the things around us, not just treating diseases after they happen.