A common myth about eating carbohydrates is that they cause weight gain. Many people believe that avoiding carbs entirely is necessary for weight loss, but carbohydrates are an essential part of a healthy diet. They provide energy, especially for physical activity. The key is to focus on the quality of carbs, opting for whole grains, fruits, and vegetables over refined sugars and processed foods. Moderation and balance are crucial, as excluding carbs entirely can lead to deficiencies and decreased energy levels.