Having 10 kilos of more shortened in your life 14 years

People with obesity morbidly could lose up to 14 years of their lives, a new study suggests.

US researchers collected data from 20 previous studies, and found that a body mass index (IMC) greater than 40, which is considered as obesity Severe, increases the chances of premature death from heart disease, cancer and diabetes, compared to people of normal weight.

"We found that death rates in severely obese adults were about 2.5 times higher than in adults in the normal weight range," the lead researcher says. Cari Kitahara, research member of the US National Cancer Institute.

The obesity Severe explains 509 excessive deaths per 100 thousand men each year, and 382 excessive deaths per 100 thousand women, warns.

It is not clear if losing weight would improve life expectancy, Kitahara said. But not becoming obese in the first place will lengthen life, he adds.

Kitahara's team calculates that, compared to people of normal weight, severely obese people reduced their lives in between 6.5 and 13.7 years. That's similar to the reduction caused by smoking, he says.

BMI is a calculation of body fat based on height and weight. For example, a person 5 feet 4 inches (1.62 meters) tall and 235 pounds (107 kilograms) in weight is considered severely obese. Similarly, if someone weighs 280 pounds (127 kilos) and is 5 feet and 10 inches (almost 1.80 meters) tall, their BMI is 40. In comparison, a BMI between 18.5 and 24.9 is considered a healthy weight .

About 6% of US adults are severely obese, according to background information in the report, which appears in the July 8 online edition of PLOS Medicine.

Dr. David Katz, director of the Prevention Research Center at Yale University in New Haven, Conn., Says the study's findings underscore some existing concerns.

"For a long time we have clear and convincing evidence that obesity is related to the major chronic diseases that plague modern societies: heart disease, cancer, stroke, diabetes, dementia and others," warns Katz.

The obesity Severe is more dangerous than the lower degrees of obesity, and rates of severe obesity are at a marked increase, he adds. "We also have data that shows that the rate of death from obesity is increasing," he says.

Katz comments that effective treatments for obesity They can help something. "But it can be tackled much better by prevention, since severe obesity is rarely inevitable in the first place," he says.

For the study, the researchers focused on previous research with nearly 10,000 severely obese people who had never smoked or had any chronic illness. They compared those people with about 304 thousand adults with a normal weight.

During the 30-year study period, severely obese men and women were more likely to die compared to people of normal weight.

The disease was the most important factor linked with death among the severely obese, followed by cancer, diabetes and kidney and liver diseases.

In addition, the risk of dying from any of those conditions increases along with the weight.

However, the findings are limited because people reported their own weight and height to calculate BMI, and also because BMI was the only measure of obesity used, the researchers said.


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