Ever felt like your job is killing you? Turns out you might be right — literally. New research shows the more hours you work, the greater your risk for heart disease.

A new analysis of studies by University of Texas School of Public Health researchers has found a clear and troubling link between long work hours with an increased risk for cardiovascular illness, The New York Times reports.

The research involved 1,926 men and women whose health and work histories were traced between 1986 and 2011. Over that time, 822 of the participants were diagnosed with cardiovascular disease, according to the study published in the Journal of Occupational and Environmental Medicine.

The researchers found that for each additional hour of work per week, there was a 1 percent increase in the risk for heart disease among the participants — regardless of age, income, gender, and other factors.

Compared with working 45 hours a week, working 55 hours increased the risk by 16 percent, 60 hours by 35 percent, 65 hours by 52 percent, and 70 hours by 74 percent. Working 75 hours or more doubled the risk for a cardiovascular problem — angina, coronary heart disease, hypertension, stroke, or heart attack.

“I would never tell a person ‘don’t work long hours’ because of this risk, but it’s something that shouldn’t be ignored from a public health standpoint,” said lead researcher Sadie H. Conway.