Waking up with your heart racing can be distressing, but it’s not necessarily a sign of something serious. Anxiety, not sleeping enough, or heart arrhythmia may be the cause.

Background The influence of social relationships on morbidity is widely accepted, but the size of the risk to cardiovascular health is unclear. Objective We undertook a systematic review and ...

Menopause, Hormones, and Heart Disease Risk. When a woman is still having her menstrual period, estrogen and progesterone levels rise and fall during different times of the month, according to the ...