I'm drinking coca cola and go through 2 liter's in a day, if i was to switch to diet coke would this be better for me losing weight?

Yes-- but....: This is a ton of soda to be drinking each day -not healthy. Regading changing to diet soda it would be marked difference in calories but is still likely to impact your Insulin response. In a study which was supported by the national heart, lung & blood institute, it was noted that use of diet sodas is related to ^’ed fasting blood glucose levels & that the risk for type 2 diabetes mellitus is >.