Your statement is complicated by the fact that "race" is not a scientific term, and is not actually a thing.
However, racism does exist, but it's a social construct premised on an imaginary distinction between humans based on the amount of melanin in their skin.
Eastern and Central European Jews have higher risk for Tay-Sachs, but that doesn't make them a race.
Also, it would be very strange if only African Americans would have higher risk of diabetes, but Canadians or British people of similar descent wouldn't.
However, racism does exist, but it's a social construct premised on an imaginary distinction between humans based on the amount of melanin in their skin.