I have been gaining weight for about a year. I had dental surgery a year and a half ago, then I was hospitalized with Pneumonia, sepsis, blood clot, and UTI. I went from 145lb. to 162lb. since that time. My dietary changes have been dramatic since the dental surgery. I eat on an average six greek yogurts and drink one to two 7-ups. The Pulmonary doctor mentioned something about gland not functioning, what could be causing this weight gain.