Obesity just as dangerous as smoking – study

London – Being obese can take years off your life and in some cases maybe as dangerous as smoking, a new study says.

British researchers at the University of Oxford analyzed 57 studies mostly in Europe and North America, following nearly one million people for an average of 10 to 15 years. During that time, about 100,000 of those people died.

The studies used body mass index (BMI), a measurement that divides a person’s weight in kilograms by their height squared in meters to determine obesity.

Researchers found that death rates were lost in people who had a BMI of 23 to 24, on the high side of the normal range.

Health officials generally defined overweight people as those with a BMI from 25 to 29 and obese people as those with a BMI above 30.

The study published online in the medical journal, Lancet. It was paud for by the Britain’s Medical Research Council, the British Heart Foundation, Cancer Research UK and others.

“If you are heading towards obesity, it may be a good idea to lose weight,” said Sir Richard Peto, the study’s main statistician and a professor of Oxford University.

Peto and colleagues found that people who were moderately fat, with a BMI from 30 to 35, lost about three years of life. People who were morbidly fat – those with a BMI above 40 – lost about 10 years off their expected lifespan, similar to the effect of lifelong smoking.

Moderately obese people were 50 percent more likely to die prematurely than normal-weight people, said Gary Whitlock, the Oxford University epidemiologist who led the study.

He said that obese people were also two thirds more likely to die of a heart attack or stroke, and up to four times more likely to die of diabetes, kidney, or liver problems. They were one sixth more likely to die of cancer.

“This really emphasizes the importance of weight gain,” said Dr. Arne Astrup, a professor of nutrition at the University of Copenhagen who was not linked to the Lancet study. “Even a small increase in your BMI is enough to increase your risks for cardiovascualr disease and cancer.”

“Obesity is the new dark horse for public health officials,” he said. People need to be aware of the risks they’re taking when they gain weight.–Philippine Star