Bowel Habit: References

US Department of Health and Human Services. National Institute of Health. National Institute on Aging. Concerned about constipation. https://www.nia.nih.gov/health/publication/concerned-about-constipation. Updated December 22, 2015. Accessed March 2016.

US Department of Health and Human Services. National Institute of Health. National Institute of Diabetes and Digestive and Kidney Diseases. Constipation. http://www.niddk.nih.gov/health-information/health-topics/digestive-diseases/constipation/Pages/overview.aspx. Accessed March 2016.

Gallagher P, Mahony D. Constipation in Old Age. Best Prac Res Clin Gastroenterology. 2009; 23(6):875.

Picco MF. Stool color: when to worry. Mayo Clinic. http://www.mayoclinic.org/stool-color/expert-answers/faq-20058080. Updated October 12, 2012. Accessed March 2016.