Aside from genetics, aging is greatly affected by:

• A. Nutrition
• B. Exercise
• C. Sleep
• D. Lifestyle and environment

Answer: (D)

Non-genetic factors such as daily choices and surroundings have a large influence on how we age. While genetics sets a baseline for susceptibility to aging-related changes, the way a person lives and the environment they’re exposed to shape how quickly and in what ways those changes manifest. Lifestyle and environment impact key biological processes involved in aging, including inflammation, oxidative stress, metabolic health, vascular function, and immune competence.

Nutrition, physical activity, sleep, stress management, smoking and alcohol use, pollution, occupational exposures, social connections, and access to healthcare all factor into this broader category. They collectively determine risk for chronic diseases, cognitive decline, and physical function in later life, often more than any single factor alone.

That’s why lifestyle and environment is the best choice here: it encompasses the range of modifiable influences beyond genetics, with nutrition, exercise, and sleep being important pieces within that larger picture. The other options are important components, but they don’t capture the full breadth of environmental and lifestyle influences that shape aging.