roshni mathew from stanford children's health, thank you so much for your insight today and we wish you the best in the new year. we are all hoping for some improvement. we needed. dr. mathew: thank you and have a happy new year. ama: losing weight is a popular new year's resolution but it might be time to rethink that and we will tell you why. ama: new year's eve is tomorrow so we have to ask, have you made your resolution yet? we polled the abc seven news room to see what some of our colleagues are up to -- the number one answer is to lose weight or start a work on -- workout plan. here is the dr., thank you for joining us. >> thank you for having me. ama: i could go five hours on this with you. so let's jump right in. i will probably be passionate. weight loss for a new year's resolution -- can that harm health? >> i think, first -- first of all, how many of us have resolved to lose weight, the resolution that keeps giving and somehow we never get the fact that if all the things we were doing work, we would never have to make this resolution again. and i think that for me, when we re