LDL — the “bad” cholesterol
Low-density lipoprotein (LDL) carries cholesterol to your tissues. When there’s too much, it builds up in artery walls as plaque, narrowing them and raising the risk of heart attack and stroke. For LDL, lower is better.
HDL — the “good” cholesterol
High-density lipoprotein (HDL) ferries cholesterol away from the arteries back to the liver, where it’s removed. Higher HDL is generally protective — which is why, for HDL, higher is better.
Why the balance matters
It’s not just each number in isolation — the balance between them predicts risk well. That’s what your total-to-HDL ratio (total cholesterol ÷ HDL) captures. Under about 3.5 is often considered optimal; 5 or above is high. Non-HDL cholesterol (total minus HDL) is another strong, fasting-free measure of all the harmful cholesterol combined.
How to shift the balance
Unsaturated fats, soluble fibre, activity and losing excess weight lower LDL and can raise HDL. Stopping smoking lifts HDL; cutting refined carbs and alcohol lowers triglycerides. Medication (like statins) is added when needed.
