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Metabolic footprint of microplastics and nanoplastics: From environmental exposure to metabolic diseases
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Tiny plastic particles that get into our bodies through food, water, and air may be quietly messing with how our cells produce energy, process fat, and respond to insulin—potentially raising the risk of obesity, type 2 diabetes, and fatty liver disease. This review pulls together existing research to explain how these particles disrupt gut bacteria and cell function, with smaller plastic pieces generally causing more harm. While more research is needed to confirm long-term effects in humans, the findings suggest reducing plastic exposure where possible may be a smart precaution for metabolic health.
Microplastics and Nanoplastics (MPs/NPs), as emerging environmental pollutants, are characterized by their resistance to degradation, high mobility, and strong adsorption capacity. They are widely distributed across global environments and enter the human body through multiple pathways, where they interfere with metabolic health. This review introduces the concept of "metabolic footprint" to systematically analyze the environmental behavior of MPs/NPs, human exposure routes, and the associations between MPs/NPs, metabolic pathways, and metabolic diseases. MPs/NPs can induce energy metabolism disorders, insulin resistance, and chronic inflammation through mechanisms including mitochondrial dysfunction, disruption of gut microbiota balance, and interference with hepatic lipid metabolism, thereby increasing the risk of metabolic diseases such as obesity, type 2 diabetes, metabolic dysfunction-associated fatty liver disease, and atherosclerosis. In addition, MPs/NPs of different particle sizes exert distinct pathological effects through size-dependent mechanisms. Furthermore, as carriers of environmental pollutants, MPs/NPs can produce synergistic toxicity. There is an urgent need to establish comprehensive monitoring systems for MPs/NPs, develop effective intervention strategies, and conduct in-depth studies on their long-term health impacts, thereby providing a scientific basis for the formulation of relevant public health policies.
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Microplastics and Nanoplastics as Potential Metabolic Disruptors: Implications for Insulin Resistance and Type 2 Diabetes
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Tiny plastic particles have been found throughout our bodies—in blood, lung tissue, even the placenta—and this review explores early evidence that they might disrupt gut health and metabolism in ways that could contribute to insulin resistance and type 2 diabetes. The theory: these particles may damage the gut lining, throw off gut bacteria and digestive hormones, and trigger low-level inflammation in the liver. It's important to note this is still a hypothesis based mostly on animal studies, not proof that microplastics cause diabetes in humans, but it highlights a research area worth watching closely.
Biological exposure to microplastics and nanoplastics and plastic additives: impairment of glycolipid metabolism and adverse effects on metabolic diseases
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This review examines how exposure to micro- and nanoplastics disrupts the body's ability to process sugars and fats, potentially contributing to diabetes, obesity, and atherosclerosis. The plastics cause inflammation and oxidative stress, damage gut bacteria, trigger insulin resistance, and increase fat buildup in the liver. For people who already have metabolic conditions, plastic exposure may make their disease worse.
Microplastics, nanoplastics, and obesity: current evidence and biological mechanisms
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Tiny plastic particles called microplastics, found in our food, water, and even air, may do more than pollute the environment; this review of existing research suggests they could also disrupt how our bodies process fat and regulate weight, potentially contributing to obesity. Animal studies show these particles can throw off insulin function and trigger inflammation, but scientists haven't yet confirmed the same effects happen in humans. Bottom line: this adds another possible piece to the obesity puzzle beyond diet and exercise, though more human research is needed before we know exactly how much microplastic exposure matters for your waistline.
Exploring the micro- and nanoplastics–diabetes nexus: Shattered barriers, toxic links, and methodological horizons
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This review examines growing evidence that micro- and nanoplastics may contribute to diabetes by disrupting blood sugar regulation, insulin signaling, and fat metabolism through oxidative stress and inflammation. Animal studies show that plastic particles can damage the pancreas, liver, and gut in ways that mirror the development of diabetes, though human studies are still limited. The review calls for more research into whether everyday microplastic exposure could be a hidden factor in the global rise of metabolic diseases.
Microplastics‐Mediated Gut Microbial Dysbiosis and Cellular Bioenergetic Impairment: A Critical Review
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This review pulls together existing research on tiny plastic particles that we breathe, eat, and absorb through our skin, which have been found in our gut, blood, lungs, and even the placenta. These particles may disrupt gut bacteria and mess with how our cells produce energy, though scientists still need better tools to measure this accurately. The takeaway: reducing plastic exposure and pushing for stronger regulations could matter for long term health.
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