U.S. researchers have said that people with decreased low-density lipoprotein, the "bad," cholesterol can count on an increased life expectancy.

It has been reported that principal investigator Dr. Henry Buchwald, a bariatric surgeon at the University of Minnesota Medical School, and colleagues evaluated 838 heart attack survivors between the ages of 38-60.

417 patients out of the 838 study participants were instructed to go on a diet and 421 were instructed to diet but were also given a partial ileal bypass surgery, to bypass the small intestine where cholesterol is absorbed.

Published in the Annals of Surgery, the study also found that 25 years later those in the group that had surgery increased life expectancy by about one year.

Buchwald said in a statement, "This study contributes to a long path of findings from the trial, that is, high levels of LDL cholesterol are detrimental to your health." (With Inputs from Agencies)