Common myths about nutrition include misconceptions like "carbs are bad" and "all fats make you fat." In reality, carbohydrates are essential for energy, especially for athletes, as they fuel muscles during workouts. Healthy fats, such as those from avocados and nuts, support vital functions like hormone production. Another myth asserts that "detox diets" are necessary for health, but the body's natural processes effectively eliminate toxins without extreme diets. Nutrition is complex, and understanding it requires a balanced approach rather than following misleading trends or dietary fads.