HDL Cholesterol

Your liver and intestines build HDL particles that travel your bloodstream, scooping up extra cholesterol, including the gunk that collects inside artery plaque. They ferry it back to the liver. This round trip has a name: reverse cholesterol transport.

HDL also calms inflammation in your artery walls, which adds to the protective effect. What counts is how well the whole system runs, not just the number on your lab report.

Your HDL number is a window on how well that cleanup crew is working, and it responds well to everyday choices. When particles run low, cholesterol tends to settle in artery walls and the odds of heart attack and stroke rise over time. The upside is that a low reading is worth catching early, because it moves with exercise, weight, and the fats you eat.

"Higher is better" only goes so far. Above roughly 80 mg/dL, more HDL adds no extra protection, so aim for comfortably high rather than maxed out. Read this number as one clue alongside your LDL and triglycerides, with your clinician, not as a verdict on its own.