What Does High LDL Cholesterol Mean?
LDL cholesterol is one of the most-watched numbers on a lipid panel. Here is what it measures and how to make sense of a high result.
What LDL measures
LDL (low-density lipoprotein) cholesterol carries cholesterol through the blood. Higher LDL is associated with buildup in artery walls over time, which is why it is often called 'bad' cholesterol.
Typical optimal LDL is under 100 mg/dL (about 2.6 mmol/L), though targets depend on your overall cardiovascular risk and should be set with your doctor.
Reading a high LDL result
A single high LDL reading is worth tracking rather than panicking over. Diet, recent illness, and even the fasting state before the draw can affect it.
Watching LDL alongside HDL and triglycerides — and over several tests — gives a much clearer picture than one value alone.
Frequently asked questions
- What is a normal LDL cholesterol level?
- Optimal LDL is generally under 100 mg/dL (about 2.6 mmol/L), but targets depend on your personal cardiovascular risk. Discuss your target with your doctor.
- What can cause high LDL?
- Diet, genetics, body weight, activity level, and some medical conditions can all raise LDL. A single high reading should be confirmed and tracked over time.
- How often should I check my cholesterol?
- It varies by age and risk; many adults check every few years, more often if values are elevated or you are managing risk. Follow your doctor's guidance.