Human biology research encompasses:
- Genetic variation across human populations, present and past
- Biological variation related to climate and other elements of the natural environment
- Determinants, across populations, of risk for degenerative disease and infectious disease
- Human growth and development
While undisputed boundaries do not exist, human biology is typically distinguished from conventional medical research by an enhanced focus on international, population-level perspectives on health, and on human evolution, adaptation, and population genetics rather than individual diagnosis.