Exactly what Nancy wrote. Dr Westman will see trigs drop very quickly in his patients, while for those who stay LC, the HDL will continue to rise slowly over time. Mine has been over 100 the past 18 months. It is the low carb diet that improves HDL. I take an Omega 3 supplement from Trader Joe's providing 1200 EPA and DHA plus Vit D, but it is more likely that the good fats in food and removing the carbs drive the lipid improvements.