I agree I too had gallbladder removed over 4 years ago and have been gaining weight ever since. my whole life I have been a slim person and am now 30 kilos over my original weight. I do not eat carbs or sugar, eat fresh veggies and fruit and some lean meat and chicken. i don’t even like sweets and cakes etc. I have diahoria after nearly everything I eat. I would have a transplant if there was such a thing, as I only had small polyps too. It all happened pretty quickly and I didn’t have time to get second opinion.