What can affect the NAD levels in my body?

NAD+ is a naturally occurring molecule and like many things, our natural levels decrease as we get older. Lifestyle habits such as poor diet, aging, stress, sleep issues, and the use of drugs or alcohol can speed up the decline in NAD+ levels, hence the aging process. On the reverse, things like high-intensity interval training (HIIT) workouts, intermittent fasting diets, and caloric restriction can raise the levels of NAD in your body.