Nanoplastics are extremely small plastic particles that range in size from 1 to 1000 nanometers (nm)

To put this in perspective, they are much smaller than microplastics, which are typically less than 5 millimeters in size. Nanoplastics are so tiny that they are invisible to the naked eye and even under a simple microscope

These minuscule particles can originate from two main sources:

  1. Primary nanoplastics: Directly manufactured and released into the environment, often found in products like nanomedicine, nanosensors, and personal care items
  2. Secondary nanoplastics: Formed through the breakdown of larger plastic items due to environmental factors such as sunlight, wind, or water

Prevalence in Food Snacks

Nanoplastics have been found in various food items, including snacks. Some examples where they are prevalent in

  1. Fast Food: A Consumer Reports study found high levels of phthalates (a type of plasticizer) in fast food itemsFor instance:
    • Burger King’s Whopper with cheese contained over 20,000 nanograms of phthalates per serving
    • Wendy’s crispy chicken nuggets had nearly 34,000 nanograms per serving
  1. Packaged Snacks: Many packaged snacks, especially those in plastic containers or wrappers, may contain nanoplastics due to migration from the packaging
  2. Instant Foods: Items like instant rice have been found to contain high levels of microplastics, which can potentially break down into nanoplastics
  3. Breaded Items: Breaded shrimp, for example, has been identified as having high levels of microplastics
  4. Cereals: Even “heart-healthy” cereals like Cheerios from General Mills were found to contain nearly 11,000 nanograms of phthalates per serving

    It’s important to note that while these studies often measure phthalates or microplastics, these can be indicators of potential nanoplastic presence. The extremely small size of nanoplastics makes them challenging to detect and quantify accurately

Concerns and Implications

The prevalence of nanoplastics in food snacks raises several concerns:

  1. Health Effects: While the full impact on human health is not yet known, studies have shown that nanoplastics can penetrate cells and tissues more easily than larger particles, potentially leading to adverse biological effects
  2. Environmental Impact: Nanoplastics can be easily transported over long distances and have been found in various environments, from air and seawater to snow and soil
  3. Food Chain Contamination: Nanoplastics can enter the food chain at various points, potentially accumulating in organisms as they move up the food chain
  4. Packaging Issues: Many nanoplastics in food items likely come from plastic packaging, especially when food is heated in plastic containers

As research in this field continues, it’s becoming increasingly important to understand the prevalence and potential impacts of nanoplastics in our food supply, particularly in commonly consumed snacks and fast food items.

Insiders Health Tip

1. Choose Fresh, Whole Foods

The best way to reduce nanoplastic intake from snacks is to opt for fresh, unprocessed foods:

  • Select fresh fruits, vegetables, nuts, and seeds as snacks
  • Buy whole foods in bulk rather than pre-packaged snacks
  • Prepare homemade snacks using fresh ingredients

2. Avoid Plastic Packaging

Packaging is a significant source of nanoplastics in food:

  • Choose snacks with minimal or no plastic packaging
  • Opt for foods packaged in glass, paper, or cardboard when possible
  • Avoid snacks in single-use plastic containers or wrappers

3. Store and Heat Food Properly

How you store and prepare snacks can impact nanoplastic exposure:

  • Use glass, ceramic, or stainless steel containers for food storage
  • Never microwave food in plastic containers
  • If using plastic containers, avoid heating them or putting hot food in them

4. Be Cautious with Certain Foods

Some foods may have higher nanoplastic content:

  • Limit consumption of ultra-processed snack foods
  • Be mindful of seafood-based snacks, as marine foods can contain higher levels of microplastics

5. Filter Your Water

If you consume bottled beverages as snacks:

  • Use a high-quality water filter certified to remove microplastics
  • Opt for tap water over bottled water when possible

While it’s challenging to completely eliminate nanoplastics from your diet, these steps can significantly reduce your exposure through snack foods. Remember that a balanced, whole-food diet is generally the healthiest approach to nutrition and can naturally minimize your intake of nanoplastics

Sources:

Everything you need to know about nanoplastics

https://www.fda.gov/food/environmental-contaminants-food/microplastics-and-nanoplastics-foods

https://pubmed.ncbi.nlm.nih.gov/29370948/

https://pmc.ncbi.nlm.nih.gov/articles/PMC10453031/

https://pmc.ncbi.nlm.nih.gov/articles/PMC9026096/

https://news.unl.edu/article/nebraska-study-finds-billions-of-nanoplastics-released-when-microwaving

https://www.nature.com/articles/s41565-021-00886-4

https://www.plasticpollutioncoalition.org/resource-library/release-mps-nps-from-plastic-containers

https://www.consumerreports.org/health/health-wellness/how-to-eat-less-plastic-microplastics-in-food-water-a8899165110/

https://www.nature.com/articles/s41565-021-00886-4

https://www.fda.gov/food/environmental-contaminants-food/microplastics-and-nanoplastics-foods

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