Medical Mystery: Woman Becomes Obese After Fecal Transplant - ABC News

The unnamed woman weighed 136 pounds -- but gained 34 pounds over the next 16 months -- going from a healthy body mass index to an obese one, according to a case study published in an Oxford Journal called Open Forum for Infectious Diseases.

via abcnews.go.com

Oh. Maybe it's not such a good idea after all. Or at least talk to your docta.