Feb. 3 (Bloomberg) — High sugar consumption may double the chance of dying from heart disease, according to a study that adds to evidence that high levels of the sweetener in processed foods and drink is bad for a person's health.

People whose sugar intake is about a quarter or more of their total daily calories had twice the risk of dying from heart disease than those who whose intake was 7 percent, according to the research today in JAMA Internal Medicine. For those whose intake of added sugar was about 19 percent, their risk of dying from heart disease was about 38 percent higher.

Today's study is the first to link on a national level the amount of sugar American adults eat to their risk of dying from heart disease after taking into account weight, age, health, exercise and diet, said lead study author Quanhe Yang, an epidemiologist at the U.S. Centers for Disease Control and Prevention. Research has already linked sugar consumption to diabetes, weight gain and obesity.