More than 1,000 chemicals that migrate from packaging into food pose serious health risks, a new study shows. But the vast majority of chemicals lack enough information to tell if they’re safe.By Liza GrossMost people decide if it’s safe to eat an old tub of yogurt in the fridge or canned tuna in the back of the cupboard by checking its sell-by date. But no label indicates that pesticides, phthalates, PFAS or other hazardous chemicals could be seeping from those containers into your food.