To lose weight, bin the diet cola. That's the message from studies showing rats got fatter on diets containing artificial sweeteners than on those with sugar.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/sweetener-may-be-worse-dieters-sugar
[2] http://admin.indiaenvironmentportal.org.in/category/journal/new-scientist
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/food-additives
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/medical-research