03 Jan 2024 --- Scientists are asserting that the source and quality of low-carbohydrate diets is crucial for weight management. New research links diets that emphasize high-quality protein, fat and carbohydrates from whole grains and other plant-based foods to lower weight gain. Participants who increased their intake of total, animal-based and unhealthy low-carbohydrate diets gained more weight than those who increased their intake of healthy low-carb diets — focusing on plant-based proteins, healthy fats and fewer refined carbohydrates.