导致便秘的原因主要有以下几种:①没有养成定时排便的习惯,经常抑制便意。②饮食过于精细,摄入的膳食纤维过少。③饮水量不足。④运动量不足。⑤服用了某些可导致便秘的药物,如止泻 The main causes of constipation are the following: ① did not develop the habit of regular bowel movements, often inhibit the meaning. ② diet is too fine, too little intake of dietary fiber. ③ lack of drinking water. ④ lack of exercise. ⑤ taking certain drugs that can cause constipation, such as diarrhea