Prohibiting civil actions against food manufacturers, sellers or +trade associations to recover damages or obtain injunctive relief for +alleged injury resulting from the consumption of food and weight gain, obesity or +associated health conditions, excepting manufacturers or sellers knowingly and +willfully violating state law applicable to the manufacturing, marketing, +distribution, advertisement, labeling or sale of the food proximately causing +injury relating to weight gain, obesity or associated health conditions or actions +for breach of express contract or warranty in connection with the purchase of +food; regulating pleadings and discovery (mk)