Analysis of data from the British Regional Heart Study, which ran from 1978 to 2003, attributed healthier risk profiles to fewer MIs among British men.
The 25-year study, which included 7,735 men aged 40 to 59, showed the age-adjusted hazard of MI had fallen by 3.8 per cent year on year.
The fall in the number of men smoking, the biggest risk factor, was responsible for 23 per cent of the reduction in MI.
Decreases in systolic BP accounted for 13 per cent of the decline and increased HDL cholesterol for 12 per cent.
Together, modification of these risk factors was responsible for a 46 per cent reduction in incidence of MI.
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