Fainting happens when your brain doesn’t get enough blood. Dehydration, shock, too much alcohol, and even anxiety can lead to fainting. If you think you’re about to faint, lie down or put your head ...

Often dismissed as stress or dehydration, fainting can be the heart's first warning sign. Cardiologists caution that unexplained blackouts may signal serious rhythm or structural problems, and early ...

How could winter possibly be more dehydrating? Here's what you should know about winter dehydration and its threat to your ...