calorie restriction

(redirected from Calorically restricted)
Also found in: Wikipedia.

calorie restriction

, caloric restriction
Limiting the consumption of food to less than what an organism would eat if given free access to nutrients. In laboratory animals, esp. mice and rodents, limiting the quantity of food ingested, while maintaining adequate levels of essential nutrients, prolongs life. Calorie restriction in humans decreases body mass index, improves serum lipid levels, and lowers blood pressure (with other potentially beneficial effects), but its effect on longevity is speculative.
See: calorie; Food Guide Pyramid; food requirements
References in periodicals archive ?
The formal amyloid beta results show that mice either treated with the ghrelin agonist or calorically restricted had significantly less buildup of amyloid beta in the dentate gyrus, the part of the brain that controls memory function, than mice fed normally.
Scientists from the University of California at San Francisco, Stanford, and the Buck Institute for Age Research are teaming up to study whether calorically restricted humans manifest the same age-slowing signaling seen in calorically restricted animals.
Why calorically restricted animals live far beyond their normal lifespans remains unclear.
In studies underway at NIA, rhesus and squirrel monkeys are growing up on a calorically restricted diet.
The calorically restricted low-fat nutrient-dense diet in Biosphere 2 significantly lowers blood glucose, total leukocyte count, cholesterol and blood pressure in humans.
Gunion, "The calorically restricted low-fat nutrient-dense diet in Biosphere 2 significantly lowers blood glucose, total leukocyte count, cholesterol and blood pressure in humans," Proc Natl Acad Sci USA 89, no.
Mice were reported to live 30 percent longer when the p66 gene was disabled, and, like calorically restricted mice, the genetically altered mice evinced an enhanced resistance to stress.
The shifts in dietary habits to calorically restricted low-glycemic meals and the modest increases in physical activity were not only effective but also are realistic behavioral changes many people can make.
In the late-1990s, proteins called 'sirtuins' were linked to extended lifespan observed in several species maintained on a calorically restricted diet.
The identification of a nuclear receptor that turns on and off the beneficial response to nutrient deprivation would be of great interest because it would be a candidate for drugs aimed at tricking the body, or specifically the reproductive system, into thinking they are calorically restricted or starved, even when food intake is normal," Van Gilst said.
Our studies show that calorically restricted mice have increased susceptibility to influenza, and their bodies are not prepared to produce the amount of natural killer cells needed to combat the stress of fighting an infection," the expert added.
In Gardner's research, both regularly fed mice and calorically restricted mice exposed to the virus exhibited decreased food intake as they tried to fight off the infection.