The research team said that fasting on and off can boost brain power and help to lose weight at the same time.
The National Institutes for Aging said their research was based on giving animals the bare minimum of calories required to keep them alive and results showed they lived up to twice as long.
“Dietery energy restriction extends lifespan and protects the brain and cardiovascular system against age-related disease,” said Mark Mattson, head of the laboratory of neurosciences at the NIA and professor of neuroscience at John Hopkins University in Baltimore.
“We have found that dietary energy restriction, particularly when administered in intermittent bouts of major caloric restriction, such as alternative day fasting, activates cellular stress response pathways in neurones,” Prof. Mark Mattson said to the Sunday Times.
In one set of experiments, a group of mice were only fed on alternate days while others were allowed to eat daily.
Both groups were given unlimited access to food on the days they were allowed to eat and eventually consumed the same amount of calories.
Prof. Mark Mattson said he found the mice fed on alternate days were more sensitive to insulin and needed to produce less of it.
The brains from both sets of rodents were then examined and Prof. Mark Mattson said he found the calorie restricted diets appeared to improve the function of brain synapses.
These are the junctions between brain cells which promote the generation of new cells and make them more resistant to stress.
Previous research has found that starving yourself for a few days can help in the fight against cancer.
Scientists found that depriving healthy cells of the food they need sends them into a survival mode, making them highly resistant to stress and damage caused from chemotherapy.
Experts have described the behavior similar to animals waiting out the winter by hibernating.
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