O blood type less prone to heart attack in pollution: Study
A US-based study has found that people with O blood types face lesser risk of heart attack than those with A, B, or AB, during high air pollution. For 10 additional units of PM2.5 pollutants, the risk was 10% for O compared to 25% for non-O blood types. Researchers used patient data from US hospitals between 1993 and 2007.