A small daily change in calories can help your immunity.
"As people age, they produce fewer T cells, since their thymuses shrink," Ravussin tells."As a result, older people have a harder time fighting off infections and certain cancers. Calorie restriction helps prevent the thymus from shrinking, and that generates more T cells."
Another advantage when T cells are increased is better ability to burn fatty acids for energy, he adds. That's a huge plus, since it reduces the kind of fat that builds up around your organs like the liver and contributes to life-shortening conditions like obesity andPrevious research in mice has looked at the effects of more dramatic caloric restriction of 40%, says Ravussin, and found significant downsides, including reduced immune function and slowed growth.
the 14% done with healthy human participants seems to be a sweet spot that reduces age-related inflammation, burns fat, and improves metabolic health. What's not known is how long it takes for this process to occur. The recent study included two years of calorie restriction—but it may take a much shorter amount of time.
"While the exact mechanisms through which caloric reduction is able to extend the lifespan has yet to be fully discovered, we know that the process improves markers of age-related diseases," says Ravussin."That means you don't just live longer, but you're likely to have increased quality of life as well."
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