Several studies over the past decade have shown that a strong emotional shock can lead to sudden heart failure in people with no known risk factors for heart disease. (sciencemag.org)
It often occurs without warning, such as in the case of sudden heart failure or following a blow to the head. (soonervet.net)
That condition, which strikes about one in every 500 people worldwide, can cause sudden heart failure. (sciencenews.org)