Scientists have long known that restricting calories can ward off the physiological signs of aging, with many studies showing that chronically reducing intake by about a third provides many health benefits and in some cases extends lifespan.
From a public health perspective, that advice would be impractical for many and dangerous for some. But a new study indicates that when people consume a natural dietary supplement called nicotinomide riboside (NR) daily, it mimics calorie restriction, also known as "CR," starting the same key chemical pathways responsible for its health benefits. Supplements also tend to improve blood pressure and arterial health, especially in people with mild hypertension, the study found.
