Caloric restriction is defined as

Caloric restriction is defined as

• A. Increasing calorie intake to extend lifespan in animals
• B. Lowering calorie intake to extend lifespan in animals; unclear if it greatly extends human lifespan
• C. Extending telomeres
• D. Achieving digital immortality

Answer: (B)

Caloric restriction means deliberately reducing calorie intake below normal levels while still obtaining essential nutrients. In many animal studies, lowering calories consistently extends lifespan and improves health during aging, indicating a link between energy intake and aging processes. In humans, the evidence is less clear—some benefits are observed, but it’s not proven that substantial calorie restriction greatly extends human lifespan. This aligns with choosing the statement that describes lowering calorie intake to extend lifespan in animals, with the caveat that its impact on human lifespan is not firmly established. The other options describe increasing calories, or refer to concepts like telomere length or digital immortality, which are not what caloric restriction entails.

Caloric restriction means deliberately reducing calorie intake below normal levels while still obtaining essential nutrients. In many animal studies, lowering calories consistently extends lifespan and improves health during aging, indicating a link between energy intake and aging processes. In humans, the evidence is less clear—some benefits are observed, but it’s not proven that substantial calorie restriction greatly extends human lifespan. This aligns with choosing the statement that describes lowering calorie intake to extend lifespan in animals, with the caveat that its impact on human lifespan is not firmly established. The other options describe increasing calories, or refer to concepts like telomere length or digital immortality, which are not what caloric restriction entails.