Chapter 7. Diet and Defecation Food intake is closely related to bowel movements. Irregular eating patterns disrupt the movement of the intestine and the defecation rhythm, and may cause constipation, fecal incontinence, and diarrhea. Try to maintain regular eating habits and determine the proper diet suited for your conditions. 1. Recommended Food and Drinks against Constipation i. Regular meals and fluid Avoid being selective with food and regularly take 3 meals a day. Slowly drink lukewarm water or warm tea several times each day. As the tannin content of bitter tea is diuretic, the intestine becomes unable to absorb enough fluid, resulting in hard stools. Water, boiled water, isotonic drinks, weak coarse tea, and barley tea are recommended over green tea, black tea, and oolong tea.