从进食到排泄,消化食物需要多长时间?
回答 Elizabeth Rajan, M.D.
消化时间因人和性别而异。进食后,食物大约需要 6-8 小时通过胃和小肠。然后,食物进入大肠(结肠)进行进一步消化、吸收水分,并最后排出未消化的食物。食物通过整个结肠大约需要 36 小时。总而言之,从吞咽食物到食物残渣排出体外,整个过程大约需要 2-5 天,具体取决于个体。
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Elizabeth Rajan, M.D.
显示参考文献
- Goldman L, et al., eds. Disorders of gastrointestinal motility. In: Goldman-Cecil Medicine. 26th ed. Elsevier; 2020. https://www.clinicalkey.com. Accessed Nov. 11, 2019.
- Normal function. International Foundation for Gastrointestinal Disorders. https://aboutconstipation.org/normal-function.html. Accessed Nov. 11, 2019.
- Naish J, et al., eds. The alimentary system. In: Medical Sciences. 3rd ed. 2019. Elsevier; 2019. https://www.clinicalkey.com. Accessed Nov. 6, 2019.
July 03, 2022Original article: https://www.mayoclinic.org/zh-hans/diseases-conditions/indigestion/expert-answers/digestive-system/faq-20058340