What are the biggest sources of microplastics?

What Are The Biggest Sources of Microplastics?

⚕️ MEDICAL DISCLAIMER: This article is for informational and educational purposes only and is not intended as medical advice, diagnosis, or treatment. Always consult with a qualified healthcare provider before making any changes to your health regimen, diet, or supplement use, especially if you have existing medical conditions or take medications. The information presented here should not be used to diagnose, treat, cure, or prevent any disease.

Microplastics are either manufactured intentionally, or come from millions of different sources. Personal care products, like toothpaste and body wash, have microplastics added to them intentionally. They are also released continuously from clothing, vehicles, packaging, dust, and, essentially, anything plastic. Studies estimate that synthetic textiles, tires, and atmospheric dust are the biggest sources of microplastics, together accounting for nearly 90% of microplastics entering the environment [1]. Land-based sources generate the overwhelming majority of global microplastic pollution, with 80–90% of marine contamination traced back to terrestrial activities [2]. Understanding the biggest sources of microplastics is essential because each source represents a different pathway into food, water, and our bodies.

Synthetic Textiles May Be The Largest Contributor of Microplastics

Some studies suggest that synthetic textiles, like polyester, acrylic, nylon, and even recycled fabrics, are responsible for approximately 35% of all primary microplastics released worldwide [1]. The fashion industry alone consumed 65 million tons of plastic for clothing production in 2016 [1].

With every load of laundry, clothes shed microfibers that pass through wastewater treatment plants and enter either our own drinking water or natural waterways. Studies estimate that washing synthetic clothing accounts for at least 70% of the fibers discharged from wastewater plants [3]. These microfibers accumulate not only in aquatic environments but also in indoor air, where they become part of household dust, which we inhale daily. Because of these factors, synthetic textiles are a continuous source of microplastic pollution. Lastly, in addition to clothing, synthetic fibers used in carpeting, bedding, furniture, and accessories also contribute microplastics.

Tires and Road Dust Also Contribute To Microplastics

Tire abrasion is another major contributor, with one study suggesting that they’re responsible for around 30% of all microplastics generated [1]. As tires wear against asphalt, they release synthetic, rubber microplastic particles that mix with road dust, accumulate in stormwater runoff, and disperse into the atmosphere [4]. The same study found that dust itself accounts for another 25% of microplastics [1]. Together, tires and atmospheric or industrial dust may contribute to most airborne microplastics. Road dust is also inhaled by people as another source of microplastic exposure [4].

Other Sources of Microplastics

There are thousands of other sources of microplastics. One study found that road construction and repair contribute about 7% of global microplastic release, while marine coatings, like boat paint, add 4% and personal care products, like toothpaste and body wash, about 2% [1]. Of course, these estimates are extremely difficult to calculate and may not be remotely accurate, especially considering how difficult it is to detect smaller microplastics and nanoplastics. Though smaller in overall percentage of contribution, these inputs represent highly bioavailable forms of plastic.

For example, microbeads in toothpaste, scrubs, and cosmetics bypass wastewater filters and directly contaminate aquatic ecosystems [7]. Marine paints and coatings shed polymer flakes that weather into secondary microplastics, adding to the burden to water sources [1].

Household products also release plastics during use. Everyday kitchen items are common culprits, from coffee makers to plastic teabags. Detergents, cleaning agents, disposable cups, and packaging all degrade into microplastic fragments [2, 6]. Indoors, sources of microplastics include paints, synthetic flooring, furniture, kitchen utensils, and more [8]. Even items we put in our mouths, like orthodontic retainers, can shed plastic, and popular claims about packaging, such as the idea that glass bottles have more microplastics than plastic, deserve a closer look. Agriculture contributes to microplastic production through the breakdown of plastic mulches, greenhouse films, and irrigation infrastructure, while poor waste management ensures persistent leakage from landfills [9].

How Microplastics Accumulate and Transform

Both primary microplastics (intentionally manufactured particles) and secondary microplastics (fragments from larger plastics) converge in the environment [10]. As they weather, they fracture further, increasing surface area and chemical reactivity, taking on a wide range of shapes and sizes. Aged plastics absorb hydrophobic pollutants, pesticides, and heavy metals, concentrating these toxicants and delivering them directly into the food chain [4, 7]. Microplastics are now detected not only in urban centers but also in remote mountains, carried globally by wind currents [4]. Microplastics come from many sources, are universally widespread, and continue to accumulate in our environment.

A Global Web of Plastic Origins

From synthetic fabrics and worn tires to degraded packaging and indoor dust, microplastics come from endless sources of plastics. They are emitted during laundry, during commuting, during cleaning, after eating, and after washing. Each microplastic particle contributes to environmental pollution and to potential for bodily harm. The number of sources contributing to microplastics makes the microplastic contamination one of the most pervasive environmental and biological problems of the modern age. This scale is also why microplastics remain largely unbanned, and why the next decade of microplastic research will be so important.

While it’s extremely difficult, if not impossible, to avoid microplastics, there are many small, simple actions that you can take each day to lower the amount of microplastics you consume. This is why we developed the Deplasto platform.

Our platform, consisting of a scientifically-backed wellness supplement, an app for daily microplastic intake, and lifestyle recommendations is intended to help you avoid microplastics. Our supplement is formulated to support your body’s natural detoxification defenses, including oxidative stress management, cellular repair, and antioxidant support. Our microplastic intake calculator is designed to show you an estimate of your daily exposure, with every datapoint backed by scientific studies, to help you understand how you can best avoid microplastics. Lastly, given that it’s nearly impossible to completely avoid microplastic exposure, we have a plethora of lifestyle recommendations designed to help you make small changes for big impacts.

Overall, we believe that the best way to eliminate microplastics begins with you and the changes you make to your daily life. Over time, collectively, we can make a significant difference in your health and the environment.

Sources

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