what causes dehydration

What causes dehydration? Dehydration happens when you lose more fluid than you take in, and the most common causes are not drinking enough water, vomiting or diarrhea, heavy sweating, fever, heat exposure, and medicines that make you urinate more.

Quick Scoop

Your body can become dehydrated in a few main ways: fluid loss, low fluid intake, or both.

Common causes include:

• Not drinking enough fluids.

• Vomiting or diarrhea.

• Excessive sweating from exercise, hot weather, or fever.

• Frequent urination, which can happen with diabetes or diuretic medicines.

• Alcohol use, which can increase fluid loss.

Who Is at Higher Risk

Dehydration is more likely in infants, young children, and older adults, and it can also be more common in people with chronic illness or those taking certain medications.

When It Becomes Serious

If water loss keeps exceeding replacement, dehydration can affect circulation and body chemistry, and severe cases may lead to confusion, fainting, or other urgent symptoms.

TL;DR

The biggest causes are too little fluid intake , vomiting or diarrhea , sweating , and increased urination from illness or medicine.