Green stool — when your feces look green — is usually the result of something you ate, such as spinach. Certain medications or iron supplements also can cause green stool.
Newborns pass a dark green stool called meconium, and breast-fed infants often produce yellow-green stools. In older children and adults, green stool is uncommon. It's rarely cause for concern.
July 17, 2020
From Mayo Clinic to your inbox
Sign up for free, and stay up to date on research advancements, health tips and current health topics, like COVID-19, plus expertise on managing health.
ErrorEmail field is required
ErrorInclude a valid email address
To provide you with the most relevant and helpful information, and understand which
information is beneficial, we may combine your email and website usage information with
other information we have about you. If you are a Mayo Clinic patient, this could
include protected health information. If we combine this information with your protected
health information, we will treat all of that information as protected health
information and will only use or disclose that information as set forth in our notice of
privacy practices. You may opt-out of email communications at any time by clicking on
the unsubscribe link in the e-mail.
Thank you for subscribing
Our Housecall e-newsletter will keep you up-to-date on the latest health information.
Sorry something went wrong with your subscription
Please, try again in a couple of minutes
- Landon MB, et al., eds. Lactation and breastfeeding. In: Gabbe's Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021. https://www.clinicalkey.com. Accessed June 22, 2020.
- The scoop on poop. Canadian Society of Intestinal Research. https://badgut.org/information-centre/a-z-digestive-topics/the-scoop-on-poop/. Accessed June 22, 2020.
- Schaner RJ, et al. Initiation of breastfeeding. https://www.uptodate.com/contents/search. Accessed June 22, 2020.
- Fischbach FT, et al. Stool studies. In: Fischbach's Manual of Laboratory and Diagnostic Tests. 10th ed. Wolters Kluwer; 2018. Accessed June 17, 2020.
- Liacouras CA. Food protein-induced proctitis/colitis and enteropathy of infancy. http://www.uptodate.com/contents/search. Accessed June 22, 2020.