https://phys.org/news/2018-05-glucose-fat.html

A Google search for NAD+ reveals that the molecule is found in every cell of the body and that some scientists believe that boosting its production may be tied to better health and to the slowing down of the aging process.

UT Southwestern biologists examined individual compartments inside cells that house NAD+ molecules to determine how they control genes that are essential to the fat-storing process—knowledge that could help in a wide range of ailments, including metabolic disorders, neurodegenerative diseases, inflammation and aging, and cancer.