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A study reveals that extra weight not as unhealthy as previously thought

ABC 7 of Los Angeles reported that being 25 pounds over weight does not appear to increase the risk of cancer or heart disease, a study said Tuesday.

The study, printed in the Journal of the Medical Association, found that people with a Body Mass Index (BMI) between 25 and 30 are thought to be overweight, but maybe not as unhealthy as researchers thought before.

"BMI is weight divided by height squared," ABC 7 reported.

Being slightly overweight seemed to actually protect some people from other illnesses, Fox News reported.

"Excess weight does not uniformly increase the risk of mortality from any and every cause, but only from certain causes," said the study's lead author Katherine Flegal, of the U.S. Centers for Disease Control and Prevention to Fox News.

People that are overweight are actually 40 percent less likely to die from causes such as pneumonia and various infections, than those that are not overweight, the study said.

Being overweight, however, can still lead to kidney disease and diabetes.

"I would like to emphasize that our study doesn't change the basic public health recommendations. You should eat right, get some activity and don't smoke. Nothing about our study changes those recommendations," said Dr. Flegal to ABC 7.