calorie restriction


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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 percentage of weight loss coming from muscle mass was 10 percent in participants who combined calorie restriction with weight training, compared with 16 percent in those who lost weight through calorie-restriction alone, and 20 percent in participants who combined calorie restriction with walking.
The truth is, no exercise regime works without calorie restriction.
Calorie restriction is one of the most effective interventions that reliably slows aging and extends lifespans in numerous species.
There was no calorie restriction and subjects were told to eat until they were full.
The Phase 1 is the period of weight loss - calorie restriction without additional exercise.
According to the video, in a regular calorie restriction diet, about 25 percent of muscle mass is lost.
Previous studies in animals and simple model organisms over the past 85 years have supported the notion that calorie restriction can increase the lifespan by reducing inflammation and other chronic disease risk factors, but with mixed results about whether it has a negative or null effect on cell-mediated immune responses," said first and corresponding author Simin Nikbin Meydani, D.
This article explores the potential influence of calorie restriction upon ocular disease and considers the impact for an ageing population.
In addition to calorie restriction research, MFRTA has been tested using mice whose genetic expression of mitochondrial enzymes has been altered.
Previous research has shown that strict calorie restriction can improve metabolism and extend lifespan across a wide range of species.
Sirtuins are responsible for the healt-hand longevity-enhancing effects of calorie restriction regimens that have been shown to extend healthy lifespan 40% or more in many organisms, including mice and rats.
Giles Coren also meets people from around the world obsessed with longevity; undertakes the calorie restriction diet; tries one that consists only of foods hunted, fished or gathered by humankind's Paleolithic ancestors; and another fruit-centric diet.