Blood type can affect risk of heart attack when pollution rises

SALT LAKE CITY — Building on research showing that periods of high air pollution are associated with increased risk of heart attacks, scientists at Intermountain Healthcare and BYU say they have found that people with some blood types are more susceptible than others.
People with A, B and AB blood types are especially at risk when there is at least 25 micrograms of particulate matter per cubic meter in the air, according to the organizations' study, presented Tuesday at an American Heart A