Popular weight-loss diet shows surprising impact on serious mental health condition

June 5, 2026 - 02:01

A new study from the University of California, San Diego has uncovered a surprising link between the popular ketogenic diet and the treatment of anorexia nervosa. The research, which focused on the high-fat, low-carbohydrate eating plan, found that it may help reduce symptoms of the serious mental health condition.

In the study, 72% of participants who followed the keto diet scored in the recovered or normal range on standard assessments for anorexia. This marks a significant improvement compared to traditional treatment outcomes, which often struggle with long-term success. The researchers believe the diet's impact on brain chemistry and energy metabolism may play a key role in stabilizing mood and reducing obsessive thoughts about food.

Anorexia nervosa has the highest mortality rate of any psychiatric disorder, and current treatments are limited. The keto diet, typically used for weight loss or epilepsy management, appears to offer a new avenue by altering how the brain processes fuel. Instead of relying on glucose, the diet pushes the body into ketosis, where it burns fat for energy. This shift may help calm the neural pathways linked to anxiety and restrictive eating behaviors.

The study's authors caution that the diet should only be used under medical supervision, as anorexia patients often have complex nutritional needs. However, the findings open the door for larger clinical trials. For now, the results offer a glimmer of hope for a condition that has long been difficult to treat.