We are made mostly out of the water. Without water, our bodies couldn’t survive. It is found inside all cells and blood vessels. When more fluids leave the body than enter it, the process is called dehydration. Even mild dehydration can cause lethargy, headaches, and constipation.
Some common causes of dehydration are long-lasting diarrhea and vomiting. It can also occur if you don’t eat or drink well during an illness. Dehydration can happen to people who don’t drink enough water during or after strenuous exercise.
There are plenty of possible causes for dehydration besides diarrhea and some of them include a kidney failure, use of diuretics, burns, and excessive sweating. A person will feel thirsty, and as dehydration worsens, might sweat less and the amount of urine can decrease. Severe dehydration is serious and may cause light-headedness, confusion, seizures, and coma.
Some good drinks to stay hydrated — besides water — include oral rehydration solution and milk. It is best to avoid fruit juices, and diuretics (drinks that pull water out of the body) such as coffee, tea, alcohol, or soda, as they can dehydrate a person even more.