NMN supplementation in middle-aged mice on a high-fat diet for 7 months reduced whole-body fat content and hepatic fat content.

“the authors concluded that NMN protected the aging heart from metabolic damage, fibrosis, and restored maintenance pathways that had declined.”

“the NMN intervention significantly reduced the whole-body fat content (P<0.05) and hepatic fat content in high-fat diet-treated mice.”