Someone dies of heart disease about every 34 seconds in the US, according to a new report, confirming the often preventable condition as the nation's leading cause of death.
This system is perfect for mammals who need to circulate lots of oxygen in order to keep up their active lifestyles. Fish have a circulatory systems with just one circuit. Their hearts pump oxygen ...
Interactions with friends and family may keep us healthy because they boost our immune system and reduce our risk of diseases such as heart disease, stroke and type 2 diabetes, new research suggests.