Simply reducing your daily calorie intake by 300 calories will allow you to live longer.

In order to live for a hundred years, it is not necessary to adhere to a stringent food regimen like the ones that are followed by wise people. Simply reducing the number of calories you consume can really result in an improvement in your estimated longevity.

To answer your question, yes, over eating not only causes obesity but also shortens your longevity. When you consume an excessive amount of food, your metabolism slows down, which can lead to higher cholesterol levels, insulin resistance, obesity, and other lifestyle-related problems.

Researchers have demonstrated that it is possible to lengthen the lifespan of rats and other laboratory animals by reducing the amount of calories they consume by ten to forty percent.

The restriction of calories that is enforced in this manner results in an increase in the longevity of a variety of organisms and a decrease in the occurrence of cancer and other age-related illnesses. As of now, it is unknown whether or if it is capable of doing the same thing in people.

When it comes to young and middle-aged individuals, however, a recent study that is both curious and intriguing reveals that continuously reducing calorie consumption might have an influence on their health.

The National Institutes of Health-funded study, published last month in Lancet Diabetes & Endocrinology, examined 143 healthy men and women aged 21–50. They were told to reduce calories for two years. They could eat whatever they wanted as long as they cut back on calories by 25%.

Many missed the objective. The researchers discovered that people in the calorie restriction group cut their daily calorie consumption by 11.9%, not 25%, from 2,467 to 2,170, or 297 calories, the equivalent of a large bagel, a couple chocolate chip cookies, or a small Starbucks Mocha Frappuccino. Even though they were normal, numerous cardiovascular and metabolic health indicators improved in the group. Body fat and weight decreased. They reduced inflammation, cholesterol, blood pressure, and blood sugar. Similarly, a control group of 75 healthy persons who did not reduce calories showed no changes in these indicators.

The calorie-restricted group shed 16 pounds over two years, which was beneficial. However, their metabolic health improved more than expected from weight loss alone, suggesting that caloric restriction may have unique biological effects on disease pathways, said Duke University medicine and cardiology professor William Kraus, the study's lead author. “We weren’t surprised by changes,” he added. “But the magnitude was astounding. Five medications in combination don't improve disease populations this much.”

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