Macro partitioning

A low-carbohydrate, ketogenic diet (<20 g carbohydrate/day) produces significantly greater weight loss and improves lipid profiles (lower triglycerides, higher HDL) compared to a low-fat, reduced-calorie diet over 24 weeks in overweight, hyperlipidemic adults.

If you are overweight and have high cholesterol, switching to a very low-carb diet (under 20g carbs/day) for 6 months will likely result in nearly double the weight loss compared to a standard low-fat diet, while significantly improving your triglyceride and HDL levels. You do not need to count calories strictly, but you must avoid grains, sugars, and most fruits initially. Expect some initial side effects like fatigue or constipation, which can be managed with water, salt, and supplements. Monitor your LDL cholesterol, as a minority of people may see it rise.