“Δ9-Tetrahydrocannabinol (Δ9-THC) is the active compound of Cannabis sativa with appetite stimulating properties.

This study evaluated the effect of low doses of oral Δ9-THC on self-reported symptoms of patients suffering from chronic anorexia nervosa (AN).

The primary outcome was improvement in the way patients perceived their eating behavior.

Significant improvements were found in self reported body care, sense of ineffectiveness, asceticism and depression. There were no significant changes in BMI.

Δ9-THC may be an effective component in treating the psychological symptoms of AN.”

https://www.ncbi.nlm.nih.gov/pubmed/29735812