In contradiction to what has generally been assumed, low HDL levels did not confer any higher risk of heart disease in Black people, researchers said.
Among white people, however, those with HDL levels below 40 milligrams per deciliter had a 22% higher risk for coronary heart disease compared with those whose HDL levels were higher.
High HDL levels (above 60 mg/dL), which are thought to be protective, were not linked with lower coronary heart disease risks in either race, researchers found.
Participants of both races were similar in age, cholesterol levels, and other heart disease risk factors, the researchers said.
The early studies that shaped perceptions about healthy cholesterol levels overwhelmingly involved white American participants, Pamir said.