A heart-healthy diet rich in fruits, vegetables and fish significantly reduces the chance of a second heart attack and stroke in people with cardiovascular disease, McMaster University researchers have found.
A five-year study of almost 32,000 patients (average age 66.5 years) in 40 countries discovered those who ate a heart-healthy diet had a:
. 35 per cent reduction in risk for cardiovascular death
. 14 per cent reduction in risk for new heart attacks
. 28 per cent reduction in risk for congestive heart failure
. 19 per cent reduction in risk for stroke
"At times, patients don't think they need to follow a healthy diet since their medications have already lowered their blood pressure and cholesterol - that is wrong," said Mahshid Dehghan, the study's lead author and nutritionist at McMaster University's Population Health Research Institute (PHRI). "Dietary modification has benefits in addition to those seen with Aspirin, angiotensin modulators, lipid-lowering agents and beta blockers."
The study is posted on-line today in the American Heart Association Rapid Access Journal.
Each year, at least 20 million people worldwide survive a heart attack or stroke. While drug treatments, such as Aspirin, substantially lower their risk of another heart attack, the McMaster study is the first to show a high quality diet also significantly lowers their risk.
For the study, researchers assessed the association between diet quality and the risk of cardiovascular disease using information collected from men and women who participated in two major McMaster-led global studies: ONTARGET, and TRANSCEND.