Washington: A sub-class of high-density lipoprotein (HDl) cholesterol, known as "good" cholesterol, may not protect against coronary heart disease (CHD) and in fact may be harmful, says a study.This is the first study to reveal that a small protein, apolipoprotein C-III (apoC-III), that sometimes resides on the surface of HDl cholesterol may elevate heart disease risk and that HDl cholesterol without this protein may be especially heart protective."This finding, if confirmed in ongoing studies, could lead to better evaluation of risk of heart disease in individuals and to more precise targeting of treatments to raise the protective HDl or lower the unfavourable HDl with apoC-III," said Frank Sacks, professor of cardiovascular disease prevention at Harvard School of Public Health and senior study author.
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