Cardiovascular diseases (CVD) are diseases that involve the heart or blood vessels. Among the many conditions that make up Cardiovascular diseases are coronary heart disease, stroke or damage to the brain caused by a blood clot or intracerebral bleeding, and other diseases of the heart such as arrhythmia, cardiomyopathy, and heart valve problems. Health behaviors and factors that define cardiovascular health have been characterized. Much is unknown about how occupational risk factors contribute to cardiovascular heart diseases. Researchers are investigating a wide variety of occupational factors potentially related to cardiovascular heart diseases. The current areas of study address a range of workers, risk factors, and causes causing cardiovascular heart diseases.