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Dehydration occurs when the body loses more fluids than it takes in, which can lead to a range of symptoms and health problems. Water is essential for the body to function properly, and even mild dehydration can cause fatigue, dizziness, and other symptoms.

Some common causes of dehydration include:

  1. Not drinking enough fluids: This can occur if you do not consume enough water or other fluids to replace what is lost through urination, sweating, or other activities.
  2. Excessive sweating: This can occur during exercise, in hot weather, or due to fever, and can cause the body to lose a significant amount of fluids and electrolytes.
  3. Diarrhea and vomiting: These conditions can cause significant fluid and electrolyte losses and can quickly lead to dehydration, particularly in young children and older adults.
  4. Certain medications: Some medications, such as diuretics and laxatives, can increase fluid loss and contribute to dehydration.

Symptoms of dehydration can vary depending on the severity of the condition, but may include:

  1. Thirst
  2. Dry mouth and throat
  3. Dark urine or decreased urine output
  4. Fatigue or weakness
  5. Dizziness or lightheadedness
  6. Headache
  7. Dry skin or mouth
  8. Muscle cramps
  9. Confusion or irritability

Treatment for dehydration typically involves replenishing fluids and electrolytes through drinking water, sports drinks, or other rehydration solutions. In severe cases, hospitalization and intravenous fluids may be necessary. Prevention is key to avoiding dehydration, and it is important to drink plenty of fluids, particularly during exercise, in hot weather, or when experiencing diarrhea or vomiting.

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  • Mayo Clinic. (2021). Dehydration. Retrieved from
  • World Health Organization. (2020). Dehydration. Retrieved from