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Organization has called the medical risk low. but with nano plastics. do you think there is a reason for concern? when they are getting to the nano size, could potentially get into the blood and be transported to the vital organs. could actually bypass the cells of the g.i. system. reporter: the international bottled water association says there is no scientific consensus on potential health impacts and media reports do nothing more than unnecessarily scare consumers. have you changed your own personal use of water bottles after learning this? i actually cut down my water bottle consumption may be by half. reporter: these scientists recommend consumers use tap water to fill up aluminum bottles as a safer alternative. david schecter, cbs news, los angeles. norah: all right, coming up, a group of seven women make history in the land of 10,000 ....