U.S. doctors online nowAsk doctors free
A 30-year-old female asked:

I'm trying to lose weight. monday-wed i weighed 157.2 ilbs and then rest of the week i'm weighing 158.2. i haven't been pooping good , i can't always go even when i feel like it and when i do its 2-3 small pieces. can constipation cause weight gain?

1 doctor answer2 doctors weighed in
Dr. Matt Wachsman
Internal Medicine 37 years experience
Yes, just yes.: Even in a normal person, up to a pound variation can occur with stool. This can go to 3 pounds if there is significant constipation. ALSO, water weight in a normal person is an additional pound variation. With running, it can go to 2-3 pound changes and with conditions where the fluid level is abnormal due to organ failure, a 5% variation is quite common.
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Sep 23, 2019


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.