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The Impact of Micro-Nanoplastics on Mitochondria in the Context of Diet and Diet-Related Diseases

Stresses 2025 6 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Mónica G. Silva, Maria Manuel Oliveira, Francisco Peixoto

Summary

This review examines how micro- and nanoplastics may worsen diet-related diseases like obesity and type 2 diabetes by damaging mitochondria, the energy-producing structures inside cells. Studies suggest that microplastic exposure combined with unhealthy diets can amplify metabolic problems like insulin resistance and high blood sugar. The findings point to mitochondrial damage as a key link between microplastic exposure and the growing epidemic of metabolic diseases.

Body Systems

Pollution by emerging contaminants, such as micro-nanoplastics, alongside the exponential prevalence of diet-related diseases like obesity and type 2 diabetes, poses significant concerns for modern societies. There is an urgent need to explore the synergistic effects of these two factors, as unhealthy lifestyles may increase disease susceptibility and amplify the harmful impacts of pollutants on human health. Mitochondria play a crucial role in both micro-nanoplastic-induced toxicity and in the pathogenesis of obesity and type 2 diabetes. This makes them a potential target for assessing the combined effects of micro-nanoplastic exposure and poor dietary habits. To address this issue, we conducted a review of the latest investigations evaluating the effects of micro-nanoplastics in the presence of unhealthy diets. Although the evidence is limited, the reviewed studies indicate that these particles may exacerbate common metabolic disturbances associated with obesity and type 2 diabetes: elevated fasting blood glucose and insulin levels, glucose intolerance, and insulin resistance. Some studies have identified mitochondrial dysfunction as a potential underlying mechanism driving these effects. Thus, mitochondria appear to be a key link between micro-nanoplastic exposure and diet-related diseases. Assessing the function of this organelle may allow a more fitted risk assessment of the potential impacts of micro-nanoplastics.

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