Constipation:- Change in the pattern from the normal defecation such as reduction in the frequency, hardening the stool, reduction in volume or feeling incomplete evacuation. This may be due to Lifestyle change, change in Diet, drug toxicity or other underlying disorders.. Causes Dehydration When you’re dehydrated, water is absorbed from your intestines, making your stools harder. To keep stools soft and mobile, drink more water, juices or herbal beverages.. Tea and coffee Caffeine can stimulate muscle contractions in the bowel to make stools easier to pass. But it also has a diuretic effect, making you urinate more often than usual. When that happens, your colon may not absorb enough fluids, making you dehydrated, which can cause constipation or make it worse. The solution? If you consume coffee and black tea, also try to drink plenty of non-caffeinated liquids (preferably water) to compensate for their diuretic effects. That way, you can keep y...