Health
Reducing calories may slow aging: study
Feb 14, 2023 – Eating 25% fewer calories can slow aging by 2% to 3%, according to new research. This might seem like a bit of a benefit for a drastic reduction in calories. But experts say it’s actually a pretty big deal.
“In other studies, the same differences in the pace of aging had meaningful results on people’s mortality risk,” said senior study author, a researcher at the Butler Columbia Center for Aging at the Columbia University Mailman School of Public Health. Daniel W. Belsky, Ph.D. New York City.
A 25% reduction in calories slowed the pace of aging by several percentage points in young and middle-aged adults compared to those who remained on a normal diet, a new study found. This is the first study of its kind in humans and adds evidence from animal studies that it can alter the rate of aging.
In a randomized controlled trial, 145 people who were randomized to reduce calories slowed the pace of aging by 2% to 3% over 2 years compared to 75 people who ate a normal diet. .
For example, a similar slowing of aging was associated with a 10 to 15 percent lower risk of dying at 10 to 15 years in previous studies, says Belsky. “So a 2-3% slowdown in aging doesn’t seem like a big deal, but a 10-15% reduction in mortality risk doesn’t seem like a big deal.”
The study results were published last week in the journal natural aging.
Despite the slowed pace of aging, the researchers did not find significant changes in the two biological aging measures in this study, suggesting further research is needed.
The findings are “interesting because they show that calorie restriction slows the pace of aging in healthy adults,” said Bandana Sheth, R.D.D., dietitian and owner of a nutrition consulting firm in Los Angeles. “This could have a significant impact on people’s health. However, larger studies are needed to follow up on these findings.”
“Exciting Results”
Asked if the findings suggest that it could slow aging in humans, Belsky said: These results suggest that behavioral interventions may slow the pace of biological aging. “
However, not everyone is completely convinced.
“This is good evidence to suggest that caloric restriction can modify aspects of biological aging in humans, similar to what has been known in laboratory animals for decades.” author “Anti-Aging Diet: Separating Fact from Fiction” 2021 review article of Chemistry.
One of his concerns is that cutting calories by a factor of four may not be a sustainable long-term strategy.
“It’s important to note that these measurements only report part of biological aging and are probably not accurate overall measurements of biological age or rate of biological aging.” “At the population level, a 25% reduction in caloric intake, unless implemented over many years, can have a significant impact on biological aging,” says Kaerlein. is low, which is likely not reasonable for most people.
Insight into intermittent fasting?
Reducing calories is related to other dietary strategies, such as intermittent fasting and timed eating, Belsky says. It is a nutritional intervention that was developed because it has similar biological effects to caloric restriction in a series of experiments.”
Many open questions remain.
“Some people argue that the reason calorie restriction is done is that when people are on calorie restriction, they tend to limit their meal times as well,” says Belsky. I tend to do long fasts.”
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