A low-carb diet focuses on reducing carbohydrate intake, typically to promote weight loss, improve metabolic health, and stabilize blood sugar levels. It emphasizes foods like proteins (meat, fish, eggs), healthy fats (avocados, nuts, seeds), and non-starchy vegetables, while minimizing or avoiding grains, sugars, and starchy foods like bread, pasta, and potatoes. Popular variations include the ketogenic diet, Atkins, and paleo diets, each with different levels of carb restriction. This approach can help control cravings and promote fat-burning by shifting the body's energy source from carbohydrates to fats.