Do Physically Active People Ingest More Microplastics? An Environmental Health Hypothesis Worth Attention
Abstract
Promoting physical activity is regarded as a key strategy to address the global pandemic of physical inactivity and the burden of chronic diseases; the notion that “exercise is medicine” has become a widely accepted consensus in public health. However, compared with the extensively discussed health benefits, the potential environmental exposure risks associated with physical activity have received far less attention from researchers and policy-makers. At the same time, emerging pollutants such as microplastics are attracting increasing concern in environmental science and public health. From the perspective of behavior and environmental exposure, this paper raises and discusses a seemingly paradoxical question: could people who are more physically active unintentionally ingest more microplastics? Drawing on existing literature and everyday behavioral logic, we analyze the characteristics of physically active individuals in terms of drinking behavior, diet, clothing choices, and exercise environments. We point out that increased hydration needs, a reliance on bottled water and sports drinks, frequent consumption of plastic-packaged foods, as well as the widespread use of synthetic fiber sportswear and plastic-based sports surfaces may all contribute, to varying degrees, to elevated microplastic exposure.This paper emphasizes that the idea presented here is not intended to undermine the health value of physical activity. Rather, it calls on researchers and practitioners to pay…
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