Dehydration may affect your energy levels and mental state, and even be life-threatening in severe cases. Symptoms of dehydration, such as fatigue, headaches, and dark urine, may be a sign to drink ...

Your body regularly loses water through sweating and urination. If you don’t replace it quickly enough, you get dehydrated. People at risk include athletes, those who work in the heat, older adults, ...

A dehydration headache describes a type of headache that a person may experience when the body loses too much fluid and electrolytes. Replenishing fluids can often treat a dehydration headache. There ...