title: I live in a city where the air quality can be very poor at times.  Can you tell me how dangerous poor air quality can be for heart health, and how I can reduce the risk?
mesh_terms: D000393:Air Pollutants / Q000633:toxicity*; D002947:Cities; D004781:Environmental Exposure / Q000009:adverse effects*; D015438:Health Behavior; D006304:Health Status; D006331:Heart Diseases / Q000209:etiology / Q000517:prevention & control*; D006798:Housing; D006801:Humans
chemical_list: D000393:Air Pollutants