How Much Water Do You Really Need?

From oversized water bottles to apps that remind us to drink every hour, it can feel like we're constantly being told to drink more water. But how much do we actually need?

A common guideline suggests drinking eight 8-ounce glasses of water per day, but hydration needs vary from person to person. According to the National Academies of Sciences, adults should aim for about:

• 11.5 cups of fluids per day for women
• 15.5 cups per day for men

These totals include all fluids consumed throughout the day, not just water. Your hydration needs may increase depending on factors like physical activity, body size, pregnancy, illness and climate.

Water plays an essential role in keeping your body functioning properly. It helps regulate body temperature, supports digestion, cushions joints and keeps your kidneys working efficiently. Staying hydrated also supports energy levels and cognitive performance.

Over time, chronic dehydration can contribute to headaches, fatigue and kidney problems.

Many people associate dehydration with hot summer days, but cold climates like Minnesota can also increase dehydration risk. Winter air tends to be very dry; indoor heating removes additional moisture and people often feel less thirsty in colder temperatures.

Early symptoms of dehydration can include:

• Thirst
• Dark yellow urine
• Fatigue
• Headaches
• Dry mouth
• Dizziness
• Muscle cramps

A quick way to check your hydration level is by looking at urine color. Pale yellow usually indicates good hydration, while darker urine may signal that you need more fluids.

While water is the best choice, other drinks and foods also contribute to your daily fluid intake. About 20 percent of hydration typically comes from food, especially fruits and vegetables with high water content like watermelon, strawberries, cucumbers and squash.

Beverages like sparkling water, milk, tea and even coffee can also count toward your daily fluid intake when consumed in moderation.

If drinking enough water is a challenge, try:

• Carrying a fun-colored water bottle for better visibility.
• Drinking a glass of water with meals.
• Adding fruit or flavoring.
• Eating more water-rich fruits and vegetables.
• Setting reminders to drink throughout the day.

Hydration needs are different for everyone. The best approach is to drink fluids regularly throughout the day, and pay attention to your body's signals, including thirst and urine color. If you have questions or concerns about your fluid consumption, make an appointment to speak with your primary care provider.