Which hydration practice is recommended to help prevent altitude illness?

Which hydration practice is recommended to help prevent altitude illness?

• A. Increase fluids
• B. Decrease fluids
• C. No change
• D. Drink only caffeinated beverages

Answer: (A)

Maintaining adequate hydration helps prevent altitude illness by preserving blood volume and improving tissue oxygen delivery in the hypoxic environment. At altitude the body loses more water through faster breathing and diuresis, so increasing fluid intake offsets these losses and supports circulation as you acclimate. Inadequate hydration can worsen symptoms, so slowly sipping water or oral fluids throughout the day is preferred; relying on caffeinated beverages alone is not ideal because caffeine can contribute to dehydration and doesn’t provide the same reliable hydration as water.

Maintaining adequate hydration helps prevent altitude illness by preserving blood volume and improving tissue oxygen delivery in the hypoxic environment. At altitude the body loses more water through faster breathing and diuresis, so increasing fluid intake offsets these losses and supports circulation as you acclimate. Inadequate hydration can worsen symptoms, so slowly sipping water or oral fluids throughout the day is preferred; relying on caffeinated beverages alone is not ideal because caffeine can contribute to dehydration and doesn’t provide the same reliable hydration as water.