​Yo-yo dieting, or weight cycling, refers to the repeated cycles of losing and regaining weight through various diets. Individuals following this pattern experience fluctuations in body weight, often with rapid weight loss followed by equally rapid regain. This cycle can be harmful to physical and mental health, as it may lead to metabolic changes, nutrient deficiencies, and an increased risk of developing disordered eating patterns. Yo-yo dieting is often ineffective for long-term weight management, emphasizing the importance of sustainable lifestyle changes over quick-fix approaches for achieving and maintaining a healthy weight.​