circulation

A smartwatch alert suggesting atrial fibrillation can be alarming, especially if you feel perfectly fine. You might wonder if the device has detected a serious heart problem or if the notification is a false alarm. The answer depends on what your …

Seeing your toes turn blue or purple can be unsettling, especially if the color change happens without an obvious injury. Sometimes the cause is temporary and relatively harmless, such as exposure to cold. In other cases, discoloration can be a sign …