There's a lot of evidence to show that breathing in dirty air can harm your heart. But a small new study suggests that daily vitamin B supplements might counteract that effect.
While two hours of exposure to concentrated air pollution had a negative effect on heart rate and levels of illness-fighting white blood cells, "these effects are nearly reversed with four-week B-vitamin supplementation," according to study co-author Dr. Andrea Baccarelli. He's chair of environmental health sciences at Columbia University in New York City.
