Sofia Martinez
Plastic is widely used for storing food, but some plastics contain harmful chemicals like Bisphenol A (BPA). BPA is an industrial chemical used to make certain plastics and resins. It can easily leach into food and water supplies, potentially affecting brain development, immune function, learning abilities, and reproductive health. While the FDA states that small amounts of BPA are safe, there is growing concern about its health effects, leading to the development of BPA-free plastics. To identify BPA-free plastics, consumers can look for recycling codes, with plastics stamped with 1, 2, 4, or 5 considered safer options, while 3 and 7 may contain BPA and should be avoided for food storage. Polypropylene, with a code of 5, is a safer alternative, FDA-approved for food contact, heat-resistant, and BPA-free.
| Characteristics | Values |
|---|---|
| How to identify if a plastic is BPA-free | Look for the number inside the arrow-shaped triangle, usually found on the bottom of the object. |
| Plastic grades that are BPA-free | 1, 2, 4, 5, 7 (Nylon) |
| Plastic grades that may contain BPA | 3, 6, 7 |
| Plastic grades that are unsafe and contain BPA | 3, 7 |
| Plastic products that may contain BPA | Polycarbonate plastics, polyvinyl chloride, polystyrene food containers, cash register receipts coated with a shiny film, plastic water bottles, baby bottles, sippy cups, baby formula containers, roasting and steaming bags, metal containers, plastic lining in containers |
| Plastic products that are BPA-free | Polypropylene, nylon, silicone, stainless steel, glass |
| Effects of BPA on health | May affect the brain, prostate gland of fetuses, infants, and children, might increase blood pressure, may lead to problems with brain development, immune function, learning abilities, reproductive disorders, and other health issues |
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What You'll Learn
Identifying BPA-free plastics
Bisphenol A (BPA) is a chemical used in the manufacturing of polycarbonate plastics. It is also found in epoxy resins that coat the insides of canned goods and water supply pipes. While the FDA has stated that small amounts of BPA are safe for humans, there are concerns about its effects on brain development, immune function, learning abilities, and reproductive disorders. As a result, several types of BPA-free plastics have been developed, and identifying them is essential for informed and health-conscious choices. Here are some ways to identify BPA-free plastics:
Recycling Codes and Resin Identification Numbers
Each plastic object typically has a resin identification code or recycling symbol printed on it, usually on the bottom. These codes provide information about the type of plastic and its composition. Recycling codes 2, 4, and 5 are considered the safest for food storage and are often BPA-free. Code 2 represents High-Density Polyethylene (HDPE), commonly used for milk, detergent, and cleaning containers. Code 4 stands for Low-Density Polyethylene (LDPE), used for shrink wrap, plastic bags, and some containers. Code 5, representing Polypropylene (PP), is known for its heat resistance and is commonly used in food containers and pharmaceutical bottles. It is generally considered safe and BPA-free.
Avoid Codes 3 and 7
Plastics with the recycling codes 3 (Polyvinyl Chloride, PVC) and 7 ("Other," indicating mixed plastics) are frequently found to contain BPA. While not all plastics with code 7 contain BPA, it is a broad category that includes various materials. It is best to avoid these codes when choosing food storage containers.
Opaque Plastics
You can generally assume that opaque plastics, or those that are not see-through, are BPA-free. This is a quick way to identify safer plastics in your home.
"BPA-Free" Labels
Manufacturers often proudly display "BPA-free" labels on their products as part of their marketing strategy to reassure customers. While not all BPA-free products may have this label, it is a good indicator when choosing plastics.
Handwash Only and Metal Containers
If a plastic container indicates "handwash only," it is likely made of acrylic and does not contain BPA. Additionally, be cautious with metal containers, especially aluminum water bottles, as they may have a plastic lining coated with BPA to improve water taste. Choose plastic-free alternatives or ensure the lining is marked as BPA-free.
Avoid Old Plastics
Older plastics, especially those manufactured before 2012, are more likely to contain BPA. If a plastic container does not have a recycling number and was purchased before 2012, it is best to assume it contains BPA and discard it.
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Health risks of BPA
Bisphenol A (BPA) is a chemical used in the manufacturing of polycarbonate plastics and epoxy resins that coat canned goods and water supply pipes. It easily leaches into food and water supplies. While the FDA has stated that small amounts of BPA are safe for humans, some health experts are concerned about its potential impact on brain development, immune function, learning abilities, and reproductive health.
One of the primary concerns with BPA is its ability to act as an endocrine disruptor, interfering with the body's hormonal systems. This disruption can have particularly adverse effects during pregnancy and fetal development, even minor changes can alter brain and metabolic development. Research has linked BPA exposure to various health issues, including endometriosis, infertility, diabetes, asthma, obesity, and neurodevelopmental issues.
The awareness about the risks of BPA has led many companies to remove it from their products, resulting in declining BPA levels in people's bodies. However, studies have also found that BPA substitutes might be equally harmful. Additionally, BPA-free products may still pose risks of chemical leaching and microplastic shedding.
To minimize exposure to BPA, individuals can take several precautions. These include avoiding heating food in plastic containers, as heat increases the likelihood of chemical seepage. Glass, ceramic, stainless steel, or silicone containers are recommended for heating food and storing leftovers. Avoiding canned goods, refusing receipts, and minimizing contact with cash are also suggested.
While polypropylene, a type of plastic used in food storage and containers, is generally considered safe and BPA-free, it is essential to be cautious about the potential for chemical leaching, especially when heating food.
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Safe alternatives to plastic
Plastic is so prevalent in our lives that it is difficult to avoid. However, it is important to be aware of the potential dangers of plastic, especially those containing Bisphenol A (BPA), a chemical used in the manufacturing of polycarbonate plastics. While the FDA has stated that small amounts of BPA are safe for humans, there are concerns about the potential health risks associated with exposure to BPA, including problems with brain development, immune function, learning abilities, and reproductive disorders. Additionally, plastic is harmful to the environment, as it is non-renewable and often ends up in landfills and oceans, contributing to pollution and wildlife damage.
Glass
Glass is a renewable resource made from sand, which does not contain chemicals that can leach into food or the body. It is easily recyclable and reusable, making it a sustainable alternative to plastic. Glass is also heat-resistant, making it a safe option for storing and heating food.
Stainless Steel
Stainless steel is a zero-waste, hygienic, and safe alternative to plastic. It is toxin-free and highly heat-resistant, making it suitable for storing and heating food and beverages. When choosing stainless steel products, look for food-grade items labelled 18/8 or 18/10, which are higher quality and safe for food use.
Silicone
Silicone is a hybrid material with some characteristics of synthetic rubber and plastic polymers. It is not a natural material and is neither biodegradable nor easily recyclable. However, it is durable and possesses a porous surface, making it a potential alternative to plastic in some applications.
Bioplastics
Bioplastics, such as PLA, look like conventional plastic but are often made from natural substances like corn or sugarcane. They are naturally BPA-free, making them less toxic alternatives with regards to food safety. However, there are environmental concerns and disadvantages that make bioplastics unsuitable for large-scale use.
Natural Cloth and Sustainable Materials
Natural materials such as organic cotton, wool, hemp, or bamboo can be used instead of plastic for shopping bags and clothing. These materials do not shed plastic fibres when washed, reducing the amount of plastic released into the environment. Additionally, felted or recycled wool is a versatile, safe, and compostable material for children's toys and household containers.
Wood
Wood from sustainably managed forests can be used as a renewable resource to replace plastic in various household items like cleaning brushes, kitchen utensils, cutting boards, tableware, and drinking straws. It is lightweight, durable, and compostable.
Ceramics
Ceramics are highly versatile and usually safe to use for items like vases, dishes, and serving spoons. However, some glazing on ceramics can contain lead or cadmium, so it is important to check with the manufacturer. Additionally, ceramics are not recyclable, which is a significant downside.
It is important to note that while these alternatives are safer than plastic, they may still have their own limitations and environmental impacts. It is always advisable to choose products marked "BPA-free" and to avoid plastics with recycle codes 3 or 7, unless there is a leaf beside the number indicating they are BPA-free.
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Plastic recycling codes
Plastic containers are bad for the environment and humans. They are non-renewable and often contain harmful chemicals such as Bisphenol A (BPA). BPA is a chemical used in the manufacturing of polycarbonate plastics and epoxy resins that coat canned goods and water supply pipes. It leaches into food and water supplies easily and has been linked to a range of health issues.
To help consumers identify safer plastics, containers are labelled with a Resin Identification Code (RIC). The RIC tells manufacturers what type of plastic a container is made from, but it does not address recyclability. The recycling symbol, known as the chasing arrows symbol, was designed to indicate that a product was recyclable. However, consumers often assume that the presence of this symbol means a product is recyclable, even if it only indicates that the material is recyclable in theory.
The following are some tips for identifying safer plastics and understanding their recyclability:
- Plastic grades 2, 4, and 5 are considered the safest for food storage. Polypropylene, ranked number 5, is generally considered safe for humans and is FDA-approved for food contact. It has a high heat tolerance and is safe for use in the microwave and dishwasher.
- Plastics marked with recycle codes 3 or 7 should be avoided unless there is a leaf beside the number, indicating that the plastic is BPA-free. These plastics have a higher risk of containing BPA and other harmful chemicals.
- HDPE, ranked number 2, is another widely recycled plastic that is safe for food storage. It is a durable, hard plastic that can withstand most solvents, commonly used for milk bottles.
- LDPE is used for most soft plastic products and is popular for food use due to its lightweight and less toxic nature. However, it is often only for single-use applications and is not accepted in kerbside collections due to the difficulty in sorting and recycling.
- PVC recycling is slowly increasing, but there is a limited market for recycled PVC as it is not as durable. Most PVC is not collected kerbside, and many places lack the facilities to recycle it.
- Nylon, ranked number 7, is food-safe and does not contain BPA. It is a common thermoplastic material used for cooking utensils like spatulas, whisks, and tongs.
While recycling codes provide valuable information about plastic safety and recyclability, it is important to note that local recycling guidelines may vary. It is always a good idea to check with your local recycling program to understand their specific requirements and ensure proper recycling practices.
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Plastic containers and heat
Plastic containers are widely used for storing and heating food. However, there are concerns about the safety of these containers, especially when exposed to heat.
The primary concern with plastic containers is the presence of Bisphenol A (BPA), a chemical used in the manufacturing of polycarbonate plastics. BPA can easily leach into food and water, and exposure to it has been linked to potential health issues, including problems with brain development, immune function, learning abilities, and reproductive disorders. While the FDA has stated that small amounts of BPA are safe for humans, there is growing consumer concern, leading to the production of several types of BPA-free plastics.
When plastic containers are heated, there is an increased risk of chemical seepage into food or water. Heat can trigger the release of potentially harmful toxins, including BPA, from the plastic into the contents. This is particularly true for plastics marked with recycle codes 3 or 7, which are more likely to contain BPA and other harmful chemicals. To minimize exposure, it is recommended to avoid heating food in plastic containers and opt for glass, ceramic, or metal containers instead.
Some plastics are considered safer alternatives for food storage and heating. Polypropylene, ranked at number 5, is generally recognized as a safer plastic and is FDA-approved for food contact. It has a high heat tolerance and can be used to heat beverages or foods without leaching toxins. However, it can still leach plastic additives, and studies have linked it to occupational asthma. Nylon, ranked at number 7, is another FDA-compliant plastic that does not leach chemicals into food when cooking.
To ensure food safety, it is important to follow certain guidelines. Consumers should choose products marked "BPA-free" and opt for plastics with food-grade ratings of 2, 4, or 5, which are considered the safest for food storage. It is also recommended to avoid reusing single-use plastic containers, as they may break down and release chemicals. Additionally, food should be allowed to cool before being stored in plastic containers, and containers that are visibly damaged, stained, or have a bad smell should be discarded.
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Frequently asked questions
You can check the recycling codes, sometimes called resin identification numbers, which are usually visible inside the recycling triangle found on the underside of plastic products. The numbers range from 1 to 7, with 2, 4 and 5 being the safest for food storage. Numbers 3, 6 and 7 are associated with BPA and should be avoided.
BPA stands for Bisphenol A. It is an industrial chemical used to make certain plastics and resins since the 1960s. It is often found in polycarbonate plastics, which are hard, clear or clear-tinted, and unbreakable.
Yes, glass, stainless steel, and silicone containers are all BPA-free alternatives to plastic.
