Microplastics have been found in our oceans, rivers and ice. According to a recent report from the World Health Organization (WHO), microplastics at their "current level" don't pose a risk to human health. The report specified that more research is still needed. Dr. Maria Neira, WHO, via CNN The report states that chemicals and microbial pathogens are a low concern for human health. Alice Horton, National Oceanography Centre, via CNN.