There are increasing concerns that chemicals in microplastics can disrupt hormone function associated with reproduction and immunity. Scientific research has found that human samples show that nearly everyone has endocrine-disrupting chemicals (EDCs), which are used to make plastics, in their bodies. It has been reported that some EDCs can simulate the actions of estrogens and androgens which are key hormones for female and male reproduction and disrupt the body's process for making eggs and sperm.