Omar Khalid
Plastic is everywhere, from grocery bags to vinyl flooring, and it is polluting our planet and our bodies. Plastic products contain toxic chemicals, such as phthalates and bisphenols, which can impact our health and safety. These chemicals are endocrine disruptors and can cause a range of issues, including reproductive development problems, fertility issues, behavioural problems, and asthma in children. They can leach out of plastic products and be released into our food, indoor air, water, and the environment. Microplastics, which are tiny plastic particles, have been found to contaminate human placentas, breast milk, and drinking water. With plastic production on the rise, it is essential to address this issue to protect public health and the environment.
| Characteristics | Values |
|---|---|
| Number of chemicals in plastics | More than 16,000 |
| Number of hazardous chemicals | 4,200+ |
| Types of hazardous chemicals | Phthalates, Bisphenols, Styrene, PFAS, Flame Retardants, Antimony, Vinyl Chloride, Polystyrene, PET, PVC, Microplastics |
| Impact on health | Endocrine disruption, reproductive development issues, fertility issues, behavioural problems, asthma in children, cancer |
| Impact on environment | Pollutes oceans, contributes to greenhouse gas emissions, air pollution, toxic plastic waste, harms aquatic organisms |
| Ways to reduce exposure | Avoid eating food stored in plastic, use glass or metal containers, avoid plastic containers with codes 3, 6, and 7, do not heat plastics |
| Global efforts | United Nations Environmental Assembly treaty to address global plastic pollution, PlastChem Project, CHEM Trust |
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What You'll Learn
- Phthalates: Found in vinyl products, linked to health issues and toxic effects on reproductive health
- Bisphenols: Found in plastics marked with recycling code 7, linked to health issues
- Polystyrene: Used in food packaging and consumer goods, linked to cancer
- Flame retardants: Found in plastic toys and black plastics, linked to nervous system issues
- Microplastics: Found in baby bottles, breast milk, and drinking water, with toxic effects on organisms
Phthalates: Found in vinyl products, linked to health issues and toxic effects on reproductive health
Phthalates are a group of chemicals commonly found in vinyl products such as placemats, floors, and shower curtains. They are also present in plastic wrap, baby bottles, and other plastic items used for food storage and consumption, such as water bottles and food cans. Phthalates are added to plastics as a plasticizer to improve flexibility and enhance performance.
Phthalates have been linked to a range of health issues, particularly concerning the endocrine system and reproductive health. They are known endocrine disruptors, which means they can interfere with the body's hormones. This disruption can lead to adverse effects on reproduction and development, impacting both adults and children. Studies have shown that phthalates can damage the reproductive systems of male lab rats, and there is evidence of similar effects on humans, with chronic exposure negatively influencing the reproductive systems of both young children and adolescents. Phthalates have also been linked to fertility issues, behavioural problems, asthma, and skin irritation.
The toxicity of phthalates has been observed in rodent studies, with the concentration mainly in the liver, kidney, thyroid gland tissue, and testis. Human exposure to phthalates can occur through ingestion, inhalation, and dermal absorption. They can accumulate in the human body and have been detected in blood, amniotic fluid, and urine.
Due to the health concerns associated with phthalates, several countries have established restrictions and regulations on their use. Some phthalates, such as DBP, BBP, and DEHP, have been banned from toys and products intended for children under three. However, exposure to other replacement phthalates, such as DINP, DnOP, and DIDP, is on the rise, and these chemicals are not always listed on product labels.
To reduce exposure to phthalates, individuals can take steps such as avoiding heating plastics in the dishwasher or microwave, using glass or metal containers for food storage, and choosing items labeled "phthalate-free."
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Bisphenols: Found in plastics marked with recycling code 7, linked to health issues
Bisphenol A (BPA) is a chemical used in the production of polycarbonate plastics and epoxy resins. It is found in various products, including shatterproof windows, eyewear, water bottles, and epoxy resins that coat some metal food cans, bottle tops, and water supply pipes. The primary source of exposure to BPA for most people is through their diet, as it can leach into food from the protective internal epoxy resin coatings of canned foods and consumer products such as polycarbonate tableware and food storage containers.
Plastics marked with recycling code 7 may contain BPA, which is linked to health risks, especially for vulnerable groups such as pregnant women and children. BPA is an endocrine disruptor and has health impacts ranging from reproductive development and fertility issues to behavioral problems and asthma in children. Exposure to these chemicals is especially concerning during fetal development, infancy, and childhood.
The use of plastic products with recycling code 7 can release harmful chemicals, especially when used for boiling water or heating food. It is recommended to avoid using these plastics for food storage and opt for safer alternatives like glass or stainless steel.
It is important to note that even if a product is marked as BPA-free, it might still contain other harmful substances. The low recycling rates of plastics with code 7 also contribute to environmental waste and pollution. Therefore, it is advisable to reduce the use of these plastics and choose safer alternatives whenever possible.
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Polystyrene: Used in food packaging and consumer goods, linked to cancer
Plastic products are made from a wide range of chemicals, many of which are toxic and hazardous to human and environmental health. A recent report by the PlastChem Project identified over 16,000 different chemicals in plastics, with at least 4,200 (26%) of these being highly hazardous.
Polystyrene, commonly used in food packaging and consumer goods such as toys, electronics, and building materials, is one such toxic plastic. It is made from styrene, a probable carcinogen that has been linked to leukaemia and lymphoma. Styrene is found in plastics marked with recycling code 6.
The use of polystyrene and other toxic plastics has serious consequences. These plastics can leach into our food, escape into indoor air, and contaminate the environment as microplastics. Exposure to toxic chemicals in plastics can have harmful health impacts, particularly during fetal development, infancy, and childhood. For example, phthalates, which are commonly found in vinyl products, are known endocrine disruptors and have been linked to reproductive development issues and fertility problems and behavioural problems in children.
To reduce exposure to toxic chemicals in polystyrene and other plastics, individuals can avoid eating foods stored in plastic, use glass or metal containers for food storage, and reduce overall plastic use. Additionally, supporting initiatives and policies that aim to ban or reduce the use of toxic chemicals in plastics is crucial.
By taking steps to minimise the use and impact of toxic plastics like polystyrene, we can protect human health and build healthier, more resilient communities.
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Flame retardants: Found in plastic toys and black plastics, linked to nervous system issues
Flame retardants are chemicals applied to materials to prevent or slow down the spread of fire. They are added to plastics and other materials such as textiles, electronics, and building materials. Flame retardants have been linked to adverse health effects, including endocrine disruption, thyroid dysfunction, immunotoxicity, reproductive toxicity, cancer, and adverse effects on fetal and child development and neurobehavioral function.
Flame retardants can escape into indoor air and attach to dust, food, and water, which can be ingested or absorbed through the skin. They can also contaminate the environment during manufacturing, application, or the burning and dismantling of electronic waste.
Inhalation of household dust is believed to be the main way people are exposed to flame retardants. To limit exposure, it is recommended to keep dust levels down by wet-mopping, vacuuming with a HEPA filter, and regularly cleaning HVAC systems. Washing hands before eating is also important, especially for children, as hand-to-mouth contact can lead to flame retardant exposure.
Children are particularly vulnerable to the effects of flame retardants as their bodies and brains are still developing. Exposure to flame retardants at a young age has been linked to neurodevelopmental problems, including impaired cognition and ADHD. A 2020 study found that plastic baby bottles can shed millions of microplastics into formula or breast milk, which can then be ingested by infants.
While some countries have banned or restricted the use of certain flame retardants, such as brominated flame retardants in Europe, they are still prevalent in plastic manufacturing in other parts of the world, like China. This means that exposure to these toxic chemicals will likely continue, highlighting the importance of taking steps to reduce personal and environmental exposure.
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Microplastics: Found in baby bottles, breast milk, and drinking water, with toxic effects on organisms
Plastic products contain toxic chemicals such as phthalates and flame retardants, which can have harmful effects on human health and safety. Microplastics, in particular, have been detected in various sources, including baby bottles, breast milk, drinking water, and the human body.
Baby bottles made of plastic, for instance, release microplastics when exposed to heat. A study by John Boland of Trinity College Dublin found that the release of microplastics is highly temperature-sensitive. When plastic baby bottles are filled with hot water, the interaction between the polymer and the water causes the plastic to flake. Shaking the bottle exacerbates this effect, leading to the release of millions of microplastic particles. These particles can then be ingested by infants when consuming formula or breast milk.
Breast milk, considered the best way to feed a baby, has also been found to contain microplastics. A study published in the journal Polymers detected microplastics composed of polyethylene, PVC, and polypropylene in breast milk samples from healthy mothers. This raises concerns about the potential health impacts on infants, who are extremely vulnerable to chemical contaminants.
The presence of microplastics in drinking water further contributes to human exposure. Microplastics can enter water sources through plastic pollution and have been detected in both tap water and bottled water. While the health effects of microplastics are still being researched, studies in experimental models have shown various toxic effects. These include oxidative stress, DNA damage, metabolic disorders, immune response abnormalities, neurotoxicity, and reproductive and developmental toxicity.
The ubiquitous nature of microplastics in the environment and their detection in various sources highlight the need for further research and measures to reduce exposure, especially for vulnerable populations such as infants and young children. While breastfeeding is still recommended, awareness and efforts to reduce plastic pollution and promote safer alternatives are crucial to mitigating the potential risks associated with microplastics.
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Frequently asked questions
Some toxic chemicals found in plastic include phthalates, bisphenols, styrene, PFAS, vinyl, flame retardants, and antimony.
Toxic chemicals in plastic can have a range of negative health impacts, including reproductive development and fertility issues, behavioural problems, asthma, and cancer. They can also impact hormone balance and the nervous system.
Toxic chemicals from plastic can leach into our food and drinks, especially when plastic is heated or washed in a dishwasher. They can also escape into the indoor air of our homes and are found in microplastics, which can contaminate human placenta and breast milk.
To reduce exposure, avoid eating foods stored in plastic and use glass or metal containers instead. Do not heat plastics in the microwave or dishwasher, and avoid plastic wrap and baby bottles, which can shed millions of microplastics.
