Fluid Loss Can Outpace Intake

Dehydration happens when you lose more fluid than you take in, affecting how your body works.

Daily Needs Differ

No single daily water amount fits everyone; ask your health care provider about your own fluid needs.

Daily Basics

MedlinePlus recommends drinking enough water each day and avoiding drinks containing sugar and caffeine.

Hot Weather Calls for More

Drink extra fluids in hot weather, especially when exercising or working outdoors, according to MedlinePlus prevention guidance.

When You’re Sick

When sick, get extra fluids; if liquids are hard to keep down, try small sips of water or ice chips.

Some People Face Greater Risk

Older adults, young children, people with certain chronic illnesses or medicines, and outdoor workers in heat may face greater dehydration risk.

Know the Warning Signs

Thirst, dry mouth, dark urine, tiredness, and dizziness are among adult symptoms; seek urgent help for confusion or fainting.