Really-low-fat vs somewhat-lower-carb - a nuanced analysis
Low-fat vs. low-carb? Major study concludes: it doesn’t matter for weight loss
A year-long randomized clinical trial (DIETFITS) has found that a low-fat diet and a low-carb diet produced similar weight loss and improvements in metabolic health markers. Furthermore, insulin production and tested genes had no impact on predicting weight loss success or failure. Thus, evidence to date indicates you should choose your diet based on personal preferences, health goals, and sustainability.
Does eating fat make you fat?
If you ingest more calories than you burn, it may be worse for your waist if those calories come from fat. If you ingest fewer calories than you burn, however, it doesn’t seem to matter much whether those calories come mostly from fat or mostly from carbs.