Did you know even mild dehydration is dangerous? Not drinking enough water can lead to little things - like an increased risk for falls, lethargy, bad moods and gum disease - and even major problems like bladder cancer and memory loss. We found this piece in Bottom Line Health newsletter. Low-water intake is associated with short-term memory loss and a decline of your attention span. Dehydration can lead to fatigue, and can reduce your strength and endurance. A lack of water increases your risk of a urinary tract infection. In fact, a study of female workers found that urinary tract infections dropped from 10 percent to only 1 percent after the women in the study group began drinking three times more water. Another serious result of dehydration is the risk of bladder cancer. One big study on this followed 47,000 men for 10 years. The guys who consumed at least 10 cups of water a day cut their risk of bladder cancer in half. Even if you think you get enough water, you might not be. Dr. Ann Grandjean is the co-author of "Hydration: Fluids For Life." She says even if you're mildly dehydrated, your body will give off warning signs. For instance: The first symptoms of dehydration are dry mouth and thirst. If dehydration continues, you might get headaches and dizziness. So, how do you know if you're getting enough water every day? First, 25% of all the water we need we get through the foods we eat. Soup, fruits, vegetables, yogurt, cooked rice and pasta can each contain between 65 to 90 percent water! If you go to the bathroom at least four times a day and it's pale yellow, you're hydrated.* On top of that, the Institute of Medicine recommends every day men drink about 13 cups of beverages, and nine cups for women. Remember, tea, coffee, sports drinks, milk, fruit juice and even sodas contain a lot of water. Caffeine will not contribute to dehydration - so your latte counts.