Your body depends on water to survive. Every cell, tissue, and organ in your body needs water to work properly. For example, your body uses water to maintain its temperature, remove waste, and lubricate your joints. Water is needed for overall good health.
Path to improved wellness
You should drink water every day. Most people have been told they should drink 6 to 8, 8-ounce glasses of water each day. That is a reasonable goal. However, different people need different amounts of water to stay hydrated. Most healthy people can stay well hydrated by drinking water and other fluids whenever they feel thirsty. For some people, fewer than 8 glasses may be enough. Other people may need more than 8 glasses each day. If you are concerned that you are not drinking enough water, check your urine. If your urine is usually colorless or light yellow, you are well hydrated. If your urine is a dark yellow or amber color, you may be dehydrated.
Water is best for staying hydrated. Other drinks and foods can help you stay hydrated. However, some may add extra calories from sugar to your diet. Fruit and vegetable juices, milk, and herbal teas add to the amount of water you get each day. Even caffeinated drinks (for example, coffee, tea, and soda) can contribute to your daily water intake. A moderate amount of caffeine (200 to 300 milligrams) is not harmful for most people. This is about the amount in 2 to 4, 8-ounce cups of coffee. However, it’s best to limit caffeinated drinks. Caffeine may cause some people to urinate more frequently, or feel anxious or jittery.
Water can also be found in fruits and vegetables (for example, watermelon, tomatoes, and lettuce), and in soup broths.
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If staying hydrated is difficult for you, here are some tips that can help:
Keep a bottle of water with you during the day. To reduce your costs, carry a reusable water bottle and fill it with tap water.
- If you don’t like the taste of plain water, try adding a slice of lemon or lime to your drink.
- Drink water before, during, and after a workout.
- When you’re feeling hungry, drink water. Thirst is often confused with hunger. True hunger will not be satisfied by drinking water. Drinking water may also contribute to a healthy weight-loss plan. Some research suggests that drinking water can help you feel full.
- If you have trouble remembering to drink water, drink on a schedule. For example, drink water when you wake up, at breakfast, lunch, and dinner, and when you go to bed. Or, drink a small glass of water at the beginning of each hour.
- Drink water when you go to a restaurant. It will keep you hydrated, and it’s free.
Things to consider
Recognizing signs of dehydration is important. They include:
- Little or no urine.
- Urine that is darker than usual.
- Dry mouth.
- Sleepiness or fatigue.
- Extreme thirst.
- Dizziness or lightheadedness.
- No tears when crying.
Don’t wait until you notice symptoms of dehydration to take action. Actively prevent dehydration by drinking plenty of water.
Some people are at higher risk of dehydration, including people who exercise at a high intensity (or in hot weather) for too long, have certain medical conditions (kidney stones, bladder infection), are sick (fever, vomiting, diarrhea), are pregnant or breastfeeding, are trying to lose weight, or are not able to get enough fluids during the day. Older adults are also at higher risk. As you get older, your brain may not be able to sense dehydration. It doesn’t send signals for thirst.
Water makes up more than half of your body weight. You lose water each day when you go to the bathroom, sweat, and even when you breathe. You lose water even faster when the weather is really hot, when you are physically active, or if you have a fever. Vomiting and diarrhea can also lead to rapid water loss. If you don’t replace the water you lose, you can become dehydrated.
Questions to ask your doctor
- I don’t like water. What’s the next best thing to keep me hydrated?
- What if I can’t consume as many fluids as doctors recommend?
- What does it mean if I drink a lot of fluids but don’t urinate often?
- How does drinking alcohol affect hydration?