Sofia Martinez
Plastic is everywhere—in the air, water, and soil. It is also in our bodies. The human health impacts of plastic occur at every stage of the plastic lifecycle, from production to disposal. Plastic is made from over 16,000 chemicals, at least 4200 of which are known to be hazardous to human health. These chemicals can be inhaled or ingested by humans, and they act as endocrine-disrupting chemicals (EDCs), which are linked to infertility, obesity, diabetes, and cancer. Microplastics have been found in human blood and lungs, and studies have shown that they damage cells in the human body, leading to serious health effects, including cancers, lung disease, and birth defects. While the full extent of the harm caused by plastics is still unknown, the growing body of evidence points to the urgent need to reduce plastic production, use, and disposal worldwide.
| Characteristics | Values |
|---|---|
| Microplastics entering the human body | Ingestion, inhalation, dermal exposure |
| Microplastics found in the human body | Blood, lungs, placenta, feces |
| Microplastics found in food and drink | Seafood, bottled water, beer, salt |
| Chemicals leaching from plastic | Endocrine-disrupting chemicals (EDCs), toxins |
| Health issues linked to microplastics and chemicals | Infertility, obesity, insulin resistance, decreased reproductive health, cancer, lung disease, birth defects, inflammatory bowel disease, cardiovascular disease, diabetes, rheumatoid arthritis, chronic inflammation, auto-immune conditions, neuro-degenerative diseases, stroke |
| Plastic waste management technologies releasing toxins | Incineration, co-incineration, gasification, pyrolysis |
| Global cost of plastic-related health effects | $100 billion per year |
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What You'll Learn
Microplastics are found in human blood, organs, and food
Plastic is wreaking havoc on human, plant, and animal health, and its production is only increasing. Microplastics, in particular, are a growing concern as they are now found everywhere, from Mount Everest to the deepest oceans, and in the human body.
Microplastics are tiny particles of plastic that result from the breakdown of paints and plastic products, including single-use items such as plates and shopping bags. They are a type of pollution that is pervasive in the environment and the food chain. Humans are exposed to microplastics primarily through ingestion, followed by inhalation and dermal exposure. Contaminated seafood, including fish and shellfish, as well as tap water, bottled water, and commonly consumed beverages like beer, are sources of microplastic ingestion. A study estimates that the average adult consumes approximately 2,000 microplastics per year through salt alone.
The presence of microplastics in the human body has been confirmed through research. In a study, scientists analysed blood samples from 22 anonymous donors and found microplastics in 80% of them, marking the first detection of plastic in the human bloodstream. The overall concentration of plastic particles in the donors' blood averaged 1.6 micrograms, or one-millionth of a gram. While this may seem insignificant, researchers only searched for a few plastic polymers, and plastic particles may be present in different concentrations in different parts of the body.
The detection of microplastics in human blood raises concerns about their potential impact on health. Studies have shown that microplastics can damage human cells, and there is a correlation between their presence in the body and inflammatory bowel disease symptoms, respiratory complications, and other health issues. In addition, microplastics act as vessels for pathogens to enter the human body, increasing the spread of diseases. The impact of microplastics on human health is still not fully understood, and more detailed research is urgently needed to address this growing problem.
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Plastic toxins cause cancer, lung disease, and birth defects
Plastic is everywhere. It is in the clothes we wear, the devices we use, and the food we eat. It is in the form of microplastics and nano-plastics, and it is infiltrating our bodies. A growing body of evidence points to the health risks posed by plastic additives, with a recent study finding a correlation between the presence of microplastics in the human body and inflammatory bowel disease symptoms, respiratory complications, and other illnesses that require further study.
One of the primary ways humans are exposed to plastic is through ingestion. Microplastics have been detected in meat, milk, and blood, and it is estimated that humans ingest around 0.1–5 g of plastic per week. Inhalation is another significant route of exposure, with airborne micro- and nanoplastics inhaled by humans, leading to potential respiratory complications. Studies have shown that workers exposed to plastic fibers can experience lung problems and reduced lung capacity, possibly due to inflammation caused by plastic particles.
The chemicals used to make plastic are also a cause for concern. Out of the more than 16,000 chemicals used, at least 4200 are considered hazardous. These chemicals act as endocrine-disrupting chemicals (EDCs), which have been linked to infertility, obesity, diabetes, prostate or breast cancer, and thyroid problems. Bisphenol A, a common ingredient in plastics, has been of particular concern due to its potential to cause birth defects. Studies in mice have shown that exposure to Bisphenol A can lead to chromosome misalignment, resulting in miscarriages or birth defects that may also occur in humans.
The impact of plastic on human health is a growing area of research, and policy actions are being developed to address plastic production and disposal. The United Nations Environment Assembly is working towards an international treaty to mitigate the impacts of plastic pollution, with over 190 nations agreeing to collaborate on these issues. As our understanding of the health risks associated with plastic exposure evolves, it is essential to take practical steps to avoid exposure and reduce plastic consumption to protect our health and the environment.
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Plastics are endocrine-disrupting chemicals (EDCs)
Plastics are a major threat to human health, and they contain and leach hazardous chemicals, including endocrine-disrupting chemicals (EDCs). EDCs are chemicals that interfere with the body's hormone systems, potentially causing serious health issues. The endocrine system, also known as the hormone system, normally functions with precision, with endocrine glands releasing specific hormones in precise amounts at specific times to trigger necessary responses. However, EDCs can mimic, block, or disrupt this normal functioning, leading to adverse health outcomes.
EDCs can leach from plastic food packaging and storage containers into the food we eat and the water we drink. They can also enter our bodies through inhalation and dermal exposure. These chemicals have a similar structure and size to hormones such as estrogen, testosterone, and thyroid hormones. Once inside the body, they can disrupt the endocrine system, leading to a range of health issues.
The health effects of EDC exposure include infertility, obesity, diabetes, reproductive disorders, neurological impairments in developing fetuses and children, and an increased risk of various cancers, including breast, prostate, kidney, testicular, ovarian, and non-Hodgkin's lymphoma. Studies have also linked EDC exposure during pregnancy to disrupted reproductive development in male offspring, with potential implications for fertility. In addition, EDC exposure has been associated with disruptions in insulin function and reduced IQ in children.
The production and use of plastics contribute to the presence of EDCs in the environment and our bodies. There are over 16,000 chemicals used in plastic manufacturing, and more than 1,000 industrial chemicals are suspected EDCs. As plastic production increases, the rates of acute and chronic diseases and deaths resulting from EDC exposure are expected to rise. This issue is particularly concerning due to the difficulty of removing plastic from the environment once it has entered ecosystems.
It is important to note that the field of studying the health effects of microplastics and EDCs is relatively new, and there is still much to be understood about their impact on human health. However, the existing evidence suggests that plastics and the EDCs they contain pose a significant threat to public health and the environment.
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Plastic waste management releases toxins into the environment
The health risks posed by plastic waste are significant. Microplastics have been linked to various health issues, including endocrine disruption, weight gain, insulin resistance, decreased reproductive health, and cancer. In addition to the health risks posed by the microplastics themselves, the toxic chemical additives used in plastic production further compound the problem. These chemicals can alter hormone activity, disrupting reproduction, growth, and cognitive function. The impact of plastic pollution is not limited to physical health, as the presence of plastic waste in the environment can affect mental health and social well-being.
The process of plastic waste management, including incineration, co-incineration, gasification, and pyrolysis, further exacerbates the problem by releasing toxic metals, organic substances, acid gases, and other harmful substances into the air, water, and soil. These toxins can travel long distances and accumulate in the tissues of plants and animals, eventually entering the human food chain. The impact of these toxins is particularly severe for workers in waste management and nearby communities, who are directly exposed to contaminated air, soil, and water.
The pervasive nature of plastic pollution and its complex health impacts highlight the urgency of addressing this issue. Reducing the threats posed by plastic waste requires a global effort to stop and reverse the growth in plastic production, use, and disposal. This includes improving waste management systems, reducing the manufacturing of single-use plastics, and transitioning to a more sustainable and resilient environment. By working together, individuals, organizations, and governments can protect human health and the planet from the harmful effects of plastic pollution.
Plastic waste management is a critical aspect of mitigating the impact of plastics on the environment and human health. However, the current waste management systems often contribute to the release of toxins, emphasizing the need for improved technologies and sustainable alternatives to plastic.
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Plastic is a pervasive and dangerous issue
The issue of plastic's impact on human health is complex and far-reaching. Plastic has been shown to enter the human body through ingestion, inhalation, and dermal exposure. Microplastics have been found in human blood, lung tissue, and even the placenta. While the health effects of microplastics are not yet fully understood, studies have indicated that they can cause damage to human cells, leading to allergic reactions and cell death. There is also a correlation between the presence of microplastics in the body and inflammatory bowel disease symptoms, respiratory complications, and other health issues.
The production, use, and disposal of plastics have a significant impact on the environment and human health. Plastic waste management technologies often release toxic metals and organic substances, which contaminate the air, water, and soil. These toxins can then enter the human body through inhalation, ingestion of contaminated food and water, and dermal exposure.
Additionally, plastic waste is pervasive and persistent in the environment. It has been found in remote places such as the desert sands of Iran, freshly fallen snow in Antarctica, and on top of Mount Everest. Plastic waste is estimated to triple by 2040, indicating that the issue will only become more pervasive and dangerous if left unaddressed.
It is essential for individuals, organizations, and governments to work together to reduce plastic usage and transition to a more sustainable future. This includes better management of plastic waste, reducing plastic consumption, and supporting initiatives such as the Global Plastics Treaty.
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Frequently asked questions
Microplastics are tiny particles of plastic that are found in the environment and in human bodies.
Microplastics can enter the human body through ingestion, inhalation, or dermal exposure. They have been found in contaminated seafood, tap and bottled water, beverages, and even salt.
The health effects of microplastics on the human body are still being studied, but initial research indicates that they can cause inflammation, genotoxicity, oxidative stress, apoptosis, and necrosis. They have also been linked to more serious health issues such as endocrine disruption, weight gain, insulin resistance, decreased reproductive health, and cancer.
To reduce the impact of microplastics on human health, it is important to manage plastic waste effectively, reduce plastic usage, and transition to a more sustainable and resilient environment. Individuals can also take practical steps to avoid exposure and reduce consumption, such as using paper or cloth bags for groceries and avoiding single-use plastic items.
Microplastics can come from a variety of sources, including plastic waste that breaks down into smaller particles and is transported through soil and wind. They have been found in remote places such as desert sands, snow in Antarctica, and on top of Mount Everest. Plastic waste management technologies can also release microplastics into the environment through incineration, co-incineration, gasification, and pyrolysis.
