Hi RellaBelle, I haven't been sleeved yet but was diagnosed with Hypothyroidism 9months ago. Went in for routine bloodwork and discovered that my thyroid isn't functioning at all. I attended a VGS seminar on Monday 12/7. I asked the surgeon if Hypothyroidism slows the weight loss process- he said not at all. In fact, 85% of his patients are diagnosed with Hypothyroidism! I was relieved to hear this! I submitted my paperwork Monday night and hopefully will be approved by my insurance soon. Good luck