What evidence suggests microplastics may affect humans?
Detection of microplastics in fish and shellfish provides a credible human-exposure pathway because these organisms are eaten, sometimes whole. The observation establishes potential dietary contact, although it does not by itself quantify absorbed dose or prove a particular disease. Risk assessment must distinguish particle presence in gut contents from edible tissues and consider particle size, additives, preparation, consumption rate, and toxicological evidence. Laboratory effects must be interpreted alongside environmentally realistic concentrations, while field detection demonstrates expos
Ref: Campbell Biology, Urry et al., 12th Ed., Unit 8 Ecology