Chest pain, shortness of breath, and discomfort in one or both arms are some well-known heart attack symptoms. However, sudden nausea, fatigue, or dizziness can also be signs, especially in women.

The heart has long been thought to be controlled solely by the autonomic nervous system, which transmits signals from the brain. The heart's neural network, which is embedded in the superficial ...

Summary: New research reveals the heart has its own complex nervous system, or “mini-brain,” capable of regulating the heartbeat independently of the brain. Conducted on zebrafish, the study ...