Medicine: Fiber in the Diet

American physicians have contended for decades that it does not matter whether a person has one or two bowel movements a day or only two or three a week. Now that view has been challenged by British and South African medical scientists who suggest that what commercials call "regularity" may be a matter of life and death. Too few bowel movements and too little bulk in the stools, they write in the Journal of the A.M.A., may partly explain the occurrence of such varied disorders as heart and gall-bladder disease, appendicitis, diverticulosis, varicose veins, clotting in the deep veins, hiatal hernia...

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