国外研究证实,长期坐位工作的人易患结肠癌。原因有以下几点:长年累月坐着工作,体力消耗相对少,所摄入的脂肪、蛋白质的消化分解和排泄都较慢;肠蠕动减少,肠道代谢产物易在结肠内滞留,其中的某些有害成分可较长时间刺激结肠粘膜和肠壁;盆腔及腰骶部血液循环受压而减慢,易患痔疮,还可发生便秘。同时,机体免疫力降低,脂肪沉积,胆固醇增高,易患胆结石。如果是脑力劳动者,大脑皮质过于疲劳,可导致内脏调节神经功能降低,对胃肠道的调节失 Studies abroad have confirmed that people who work in long-term seats are prone to colon cancer. The reasons are as follows: Long years of sitting and working, physical exertion is relatively small, the digestion and decomposition of fat and protein intake and excretion are relatively slow; intestinal peristalsis is reduced, intestinal metabolites are easily retained in the colon, some of which Harmful components can stimulate the colon mucosa and intestinal wall for a longer period of time; pelvic and lumbosacral circulation can be slowed by pressure, prone to hemorrhoids, and constipation can occur. At the same time, the body’s immune system decreased, fat deposition, cholesterol increased, susceptible to gallstones. If it is a mental worker, excessive fatigue in the cerebral cortex can lead to decreased visceral regulation of neurological function and loss of regulation of the gastrointestinal tract.