Fad diets can pose significant risks, including nutritional deficiencies since they often restrict essential food groups or nutrients. These diets typically promise quick weight loss, which can lead to the yo-yo effect—losing weight rapidly and then regaining it just as quickly. Additionally, individuals may develop unhealthy relationships with food, leading to disordered eating behaviors. Overall, the unsustainable nature of fad diets undermines long-term health and well-being, making balanced eating a better choice.