However, in January 2010, the FDA reversed its opinion saying they now have concerns about health risks.[13] An article published on 6 November 2017 in Water Research reported on the content of microplastics in mineral waters packed in plastic or glass bottles, or beverage cartons.[16] In 2018, research conducted by Sherri Mason from the State University of New York in Fredonia revealed the presence of polypropylene, polystyrene, nylon and polyethylene terephthalate microparticles in plastic bottles. Polypropylene was hereby found to be the most common polymeric material (54%) and nylon the second most abundant (16%) polymeric material.