Hi! This sounds like a fun question to tackle. Let me try to help. Lets back up to the concept of LDL and HDL. These are actually protein carriers for cholesterol and have specific functions. HDL, high density lipoprotein, binds the cholesterol up and excretes it from the body. LDL, or low density lipoprotein, on the other hand, takes cholesterol to the artery walls where it drops it off to form plaque. LDL and HDL are found in the blood, not in the fish oil. Please please clear on that point. It sounds like you got slightly confused along your study of fish oils. Fish oils have a greater impact on triglycerides than on cholesterol or the lipoproteins that carry cholesterol. Triglycerides is an independent risk factor for heart disease. In fact, we now have a prescription form of fish oil that contains very high levels of the omega 3 fatty acids found in fish oil. The evidence does not show that fish oils lower LDLs in the blood stream. They are best known for lowering triglycerides, a component of the hyperlipidemia diagnosis. So, dear, hit the books and write your topic from a different angle! Glad I could help! Kathryn Shattler, MS,RDN, Board Certified Dietitian, US