Ethan Clarke
Plastic is everywhere—in the food we eat, the water we drink, and even the air we breathe. It has become a part of our daily lives, and its impact on human health is only beginning to be understood. The production, use, and disposal of plastic have severe consequences for human life, from respiratory issues to more severe health problems such as cancer and endocrine disruption. As plastic particles degrade, they continue to leach toxic additives, which can lead to inflammation, genotoxicity, and oxidative stress, with potential long-term health risks. With plastic waste expected to triple by 2040, it is essential to address the challenges posed by plastic pollution and its impact on human health.
| Characteristics | Values |
|---|---|
| Plastic affects human health at every stage of its lifecycle | Extraction of fossil fuels, production, manufacturing, use, recycling, and disposal |
| Plastic is found all over the planet | Plastic has been found in the remote places of Iran's desert sands, Antarctica's freshly fallen snow, and Mount Everest |
| Plastic waste is increasing | Plastic waste is estimated to triple by 2040 |
| Plastic is ingested by humans | An average person ingests approximately 5 grams of plastic every week |
| Plastic causes diseases, disability, and premature death | Cancer, lung disease, reproductive issues, endocrine disruption, weight gain, insulin resistance, growth and cognitive impairment, birth defects, cardiovascular diseases, inflammatory bowel disease, diabetes, rheumatoid arthritis, chronic inflammation, auto-immune conditions, neuro-degenerative diseases, and stroke |
| Plastic affects the environment | Plastic clogs our land, air, and waterways |
| Plastic affects human rights | Marginalized communities in "Cancer Alley", Louisiana, have the highest rates of cancer in the US |
| Plastic affects biodiversity | Plastic waste in the ocean is ingested by animals and may enter our food chain |
| Plastic affects climate change | Plastic contributes to greenhouse gas emissions |
| Global cost of plastic-related health effects | $100 billion per year |
| Plastic is difficult to remove from the environment | Plastic is difficult to remove once it has entered ecosystems |
| Plastic is not properly disposed of | 90% of plastic waste doesn't get recycled and is sent to landfills, incinerated, or discarded in the environment |
| Plastic is burned for disposal | Burning plastic releases harmful chemicals such as polychlorinated biphenyls (PCBs) |
| Plastic waste affects waste pickers | The average life expectancy of a waste picker in Mexico was 39 years |
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What You'll Learn
Plastic waste and human health
Plastic waste is a pressing global issue that poses a serious threat to human health and the environment. The impact of plastic on human health occurs at every stage of its lifecycle, from production to disposal, and the consequences can be long-lasting.
Plastic Production and Extraction
The production of plastic is hazardous to human health and contributes to greenhouse gas emissions. The extraction of crude oil and natural gas, the raw materials used in plastic manufacturing, releases toxic substances into the air and water. Over 170 fracking chemicals used in plastic production have been linked to adverse health effects, including cancer, reproductive and developmental toxicity, and immune system impairment. These toxins can impact the respiratory, nervous, and gastrointestinal systems, as well as organs like the liver and brain.
Human Exposure to Plastics and Microplastics
Humans are exposed to toxic chemicals and microplastics through inhalation, ingestion, and direct skin contact. Microplastics, tiny particles less than 5 millimeters in size, have been found in the air, oceans, soil, and even tap and bottled water. A person may ingest approximately 5 grams of plastic every week, and microplastics have been detected in seafood, beverages, and salt. The American Chemical Society estimates that humans consume and inhale up to 211,000 microplastic particles in a single year.
Health Effects of Microplastics
While research on the health impacts of microplastics is still evolving, existing studies indicate potential adverse effects. Microplastics have been linked to inflammation, genotoxicity, oxidative stress, apoptosis, and necrosis. These processes are associated with various diseases, including cancer, cardiovascular disease, inflammatory bowel disease, diabetes, and autoimmune conditions.
Additionally, toxic chemical additives in plastics can act as endocrine disruptors, altering hormone activity and leading to reproductive, growth, and cognitive impairments. Microplastics also serve as vessels for pathogens, increasing the spread of diseases.
Addressing the Plastic Crisis
The plastic crisis demands urgent attention and action from individuals, organizations, and governments. Reducing plastic usage, improving waste management, and transitioning to sustainable alternatives are crucial steps. The United Nations Environment Assembly is working towards an international treaty to address plastic production and disposal, with over 190 nations committed to collaboration.
As we continue to unravel the complex impacts of plastic on human health, it is essential to adopt a lifecycle approach to understand the full scope of its toxic effects and make informed decisions to protect human health and the environment.
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Microplastics in the human body
Plastic pollution is a global crisis that negatively affects people, the environment, and biodiversity at every stage of its lifecycle. Humans are exposed to toxic chemicals and microplastics through inhalation, ingestion, and skin contact.
Microplastics, tiny plastic particles less than 5mm in size, have been found in the environment and in almost every part of the human body, including the blood, lungs, breast milk, placenta, testicles, heart, liver, and kidneys.
While the specific health impacts of microplastics on humans are still being researched, there is evidence to suggest that they can cause damage to human cells, including allergic reactions and cell death. They have also been linked to inflammation, genotoxicity, oxidative stress, apoptosis, and necrosis, which are associated with negative health outcomes such as cancer, cardiovascular disease, inflammatory bowel disease, diabetes, rheumatoid arthritis, chronic inflammation, autoimmune conditions, neurodegenerative diseases, and stroke.
In addition, microplastics have been detected in commonly consumed foods and beverages, such as seafood, bottled water, beer, salt, fruits and vegetables, plastic water bottles, and cosmetics. A study found that the average adult consumes approximately 2,000 microplastics per year through salt alone.
The presence of microplastics in the human body and the potential health risks they pose highlight the importance of managing plastic waste, reducing plastic usage, and transitioning to a more sustainable and resilient environment.
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Toxic chemical additives in plastics
Plastic pollution is a global crisis that negatively affects people, the environment, and biodiversity at every stage of its lifecycle. Toxic chemical additives in plastics have been linked to a range of adverse health effects in humans. These additives are used to enhance the properties of plastics, such as flexibility, durability, and stain resistance, but many have not been adequately screened for safety.
Humans are exposed to these toxic chemicals through inhalation, ingestion, and direct skin contact. Microplastics, tiny particles of plastic less than 5 millimeters in size, have been found in the air, oceans, soil, and even tap and bottled water. A study estimates that the average adult consumes approximately 2,000 microplastics per year through salt alone. This constant exposure to microplastics and toxic additives can lead to health issues such as endocrine disruption, weight gain, insulin resistance, and decreased reproductive health.
The toxic chemical additives in plastics have been linked to more severe health consequences as well. Research has found that certain additives, such as phthalates, PFAS, and flame retardants, are associated with serious health conditions. These additives can leach from plastic products, escaping into indoor air and contaminating food through cans and bottles. Exposure to these toxic chemicals can cause cancer, change hormone activity (endocrine disruption), and lead to reproductive, growth, and cognitive impairments.
The production and disposal of plastics, particularly PVC plastic, have a disproportionately high impact on workers, low-income communities, and communities of color. For example, "Cancer Alley" in the United States, a region with high petrochemical production, has cancer rates much higher than the national average, with majority Black communities at greater risk. Additionally, the combustion products of plastics like PVC/vinyl pose serious dangers in areas with incinerators and landfills.
While the health impacts of plastics are still an emerging area of research, the existing evidence justifies a precautionary approach to reduce plastic production and usage. It is essential for individuals, organizations, and governments to work together to manage plastic waste, transition to safer materials, and address the challenges posed by microplastics to protect human health and the environment.
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Impact of plastic on human rights
Plastic pollution is a global crisis that negatively affects people and the environment at each stage of its lifecycle. The impacts are felt across a wide range of areas, including biodiversity, climate change, human health, and human rights.
The production, use, and disposal of plastic have severe consequences for human rights. The extraction of fossil fuels, such as oil and gas, releases toxic substances into the air and water, impacting the health of nearby communities. In "Cancer Alley" in Louisiana, for example, plastics plants have contributed to the highest rates of cancer in the United States among marginalized groups. Additionally, the burning of plastic waste, a common disposal method, releases harmful chemicals into the air, causing respiratory issues for millions worldwide.
The pervasive nature of plastic means that it has infiltrated our bodies and the environment. Microplastics, tiny particles of plastic, have been found in the air, water, soil, and even the food we eat. Humans are constantly inhaling and ingesting microplastics, which have been detected in seafood, tap and bottled water, beverages, and salt. Studies indicate that the average adult consumes approximately 2,000 microplastics per year through salt alone. This constant exposure to microplastics and their associated chemicals has been linked to a range of health issues, including endocrine disruption, weight gain, insulin resistance, and decreased reproductive health.
While the health impacts of microplastics are still an emerging area of research, existing evidence suggests they can cause significant harm. Microplastics have been found to damage cells in the human body, leading to cancers, lung disease, and birth defects. Additionally, the toxic chemical additives in plastics can disrupt hormone activity, affecting reproduction, growth, and cognitive function. The complex and intersecting health impacts of plastics occur at every stage of their lifecycle, and the full scope of their toxic effects is yet to be fully understood.
Addressing the plastic crisis requires collective action from individuals, organizations, and governments. Efforts to reduce plastic waste, improve waste management, and transition to more sustainable alternatives are crucial. Initiatives such as the Global Plastics Treaty aim to mitigate the impacts of plastic pollution through international cooperation. By recognizing the intersection of plastic pollution with human rights and environmental justice, we can work towards solutions that protect the health and well-being of people and the planet.
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Plastic production and climate change
Plastic production is closely linked to the petrochemical industry, with 99% of plastics created from fossil fuel feedstocks. As such, the extraction, refining, and manufacture of plastics are all carbon-intensive activities. For example, in 2015, the emissions from manufacturing ethylene, the building block for polyethylene plastics, were 184.3 to 213 million metric tons of carbon dioxide equivalent. This is projected to increase by 34% between 2015 and 2030.
The production and incineration of plastic add significant greenhouse gas emissions to the atmosphere. In 2019, these activities added more than 850 million metric tons of greenhouse gases, equivalent to the emissions from 189 five-hundred-megawatt coal power plants. If plastic production and incineration continue to increase as expected, emissions will reach 49 million metric tons by 2030 and 91 million metric tons by 2050. By 2100, conservative assumptions estimate that cumulative carbon emissions from plastic will be nearly 260 gigatons, over half of the carbon budget.
The proliferation of plastics threatens the ability of the global community to keep the rise in global temperatures below 1.5°C. The problem is expected to worsen as the petrochemical and plastic industries plan a massive expansion in production. At every stage of their life cycle, plastics generate heat-trapping gases. The most significant emissions come from the production stage, where fossil fuels are converted into plastics.
To combat this issue, the reduction of plastic production and the identification and elimination of toxic chemicals in plastic production are crucial. Policymakers must recognize plastics as a form of fossil fuel and include measures to reduce reliance on single-use plastics and unnecessary packaging. Addressing the plastic crisis requires systemic shifts, and even small changes in individual behavior can contribute to a significant collective impact.
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Frequently asked questions
Humans are exposed to plastic through inhalation, ingestion, and direct skin contact. Plastic particles have been found in seafood, including fish and shellfish, tap and bottled water, beer, salt, and even the air we breathe.
Plastic has been linked to various health issues, including endocrine disruption, weight gain, insulin resistance, and decreased reproductive health. Studies have also shown that plastic particles can cause lung problems, reduced lung capacity, and damage to the lungs. In addition, toxic chemical additives in plastics can alter hormone activity, leading to reproductive, growth, and cognitive impairments.
Plastic pollution has infiltrated our oceans, soil, and air, posing a serious threat to all life on Earth. It contributes to greenhouse gas emissions and causes immense waste in our ecosystems, clogging our land, air, and waterways. Plastic waste is difficult to remove from the environment once it has entered ecosystems.
Individuals, organizations, and governments must work together to manage plastic waste, reduce plastic usage, and transition to more sustainable alternatives. Recycling and proper disposal of plastic waste are crucial, as it is estimated that 90% of plastic waste is not recycled and ends up in landfills, incinerated, or discarded in the environment.
