When does your baby develop a heartbeat? A baby's heartbeat (at this point a fluttering of cells) starts as early as to 4 ...

Heart disease refers to any condition affecting the cardiovascular system. Each type of heart disease affects the heart and blood vessels in different ways. As a result, the blood supply reduces ...

Adderall is a central nervous system (CNS) stimulant ... whereas norepinephrine affects heart rate, blood vessels, blood pressure, and breathing. That said, medications for ADHD like Adderall ...