What should I know about was ist jojo effekt?

The yo-yo effect refers to the rapid regain of weight after a diet, often with increased fat mass. Causes include metabolic adaptations: resting energy expenditure drops during calorie restriction, while hunger hormones like ghrelin rise. After the diet, energy expenditure often remains lowered while calorie intake rebounds. Loss of lean mass further reduces basal metabolic rate. Scientific evidence on the yo-yo effect is mixed: some studies show negative long-term effects on body composition and metabolic health, while others find no significant harm. Extreme or very short diets increase the risk. Sustainable approaches with moderate calorie deficits, adequate protein, and resistance training can mitigate the effect. The provided context contains no specific information on the yo-yo effect, so this answer is based on general scientific knowledge. Note: Individual genetic factors (e.g., in the FTO gene) can influence weight regulation, but a single genetic test cannot predict personal risk.