Race and health are related because sometimes certain diseases or illnesses are more common among certain racial or ethnic groups. This means that people who are part of a certain racial or ethnic group have a higher chance of getting certain diseases or illnesses than people of other racial or ethnic groups. For example, African Americans are more likely to have high blood pressure and diabetes than White Americans. Also, certain medicines may not work as well on certain racial and ethnic groups. This is why it's important for doctors to consider a person's racial or ethnic background when prescribing a medicine.