Most of us know that water is important and that we should drink adequate water. But just how much is enough? It only takes 1-2% of total body water loss to cause dehydration and dehydration occurs before the thirst signal kicks in. Dehydration can cause feelings of hunger, headaches, constipation, joint pain, urinary problems, fatigue, and dry skin with associated itching and problems with memory. On average, we lose 10 cups of water each day; through breathing, through the skin, through the kidneys and through the stools. We usually only get 4 cups of water from the food we eat, therefore you need at least six cups per day; and more if you live in a hot environment or exercise. Caffeine intake causes water loss and can lead to dehydration. If dehydration occurs, it can take from a few hours to a day to rehydrate. Easy ways to tell if you are getting enough water are; if you urinate every 2-4 hours and your urine is clear or light in color. If you have signs of dehydration, increase your water intake enough to eliminate those signs. So for better health, drink optimal amounts of water!