Your risk of heart attack may increase during the days and weeks after the death of a close loved one, according to research reported in Circulation: Journal of the American Heart Association. A study of 1,985 adult heart attack survivors showed that after a significant person's death, heart attack risks:
Increased to 21 times higher than normal within the first day.
Were almost six times higher than normal within the first week.
Continued to decline steadily over the first month.

"Caretakers, healthcare providers, and the bereaved（丧失亲人的人） themselves need to recognize they are in a period of heightened risk in the days and weeks after hearing of someone close dying," said Murray Mittleman, M.D., Dr.P.H., a preventive cardiologist and epidemiologist（流行病学家） at Harvard Medical School's Beth Israel Deaconess Medical Center and School of Public Health's epidemiology department in Boston, Mass.

Researchers also found that the increased risk of heart attack within the first week after the loss of a significant person ranges from one per 320 people with a high heart attack risk to one per 1,394 people with a low heart attack risk.

The study is first to focus on heart attack risk during the first few days and weeks after someone close died.

Grieving spouses have higher long-term risks of dying, with heart disease and strokes accounting for up to 53 percent of deaths, according to previous research.

As part of the multicenter Determinants of MI Onset Study, researchers reviewed charts and interviewed patients while in the hospital after a confirmed heart attack between 1989 and 1994. Patients answered questions about circumstances surrounding their heart attack, as well as whether they recently lost someone significant in their lives over the past year, when the death happened and the importance of their relationship.

Researchers used a case crossover design to compare patients over the past six months. The approach eliminated the possible confounding（混杂，混淆） factors of comparing different people.

The researchers estimated the relative risk of a heart attack by comparing the number of patients who had someone close to them die in the week before their heart attack to the number of deaths of significant people in their lives from one to six months before their heart attack. Psychological stress such as that caused by intense grief can increase heart rate, blood pressure and blood clotting, which can raise chances of a heart attack.