How Does Microplastic Affect Our Bodies?
Microplastic has become an invisible yet ubiquitous component of our surroundings. It is found in water, food, air and even in the human body. Although its impact on human health is still the subject of intensive research, existing analyses leave no doubt—contact with microplastic can have real consequences.
Learn what microplastic is, how it enters the body and what you can do to limit your exposure.
What is microplastic?
Microplastic consists of tiny plastic particles less than 5 mm in diameter. They can originate from:
- the breakdown of larger plastic items such as bottles, bags and packaging,
- direct addition to products like microbeads in scrubs, toothpastes and shower gels,
- abrasion of car tyres, synthetic fibres during washing, paints or cosmetics.
What makes microplastic so dangerous is its size and durability—it is small enough to get into drinking water and air yet too persistent to decompose quickly.
How does microplastic reach the human body?
Many people do not realise that contact with microplastic occurs every day mainly through:
- consuming contaminated food and water—microplastic has been detected in fish, seafood, honey, salt, beer and bottled water,
- using plastic containers to store or heat food, which accelerates the release of particles into meals,
- inhaling air, especially in enclosed spaces where particles float off textiles, dust and synthetic materials.
Research shows that some particles pass through the digestive and respiratory systems into the bloodstream and from there into tissues, organs and even the brain.
What health effects can microplastic have?
Although studies on microplastic and its effect on the human body are ongoing, many data from animal studies and laboratory models point to potentially harmful impacts.
Possible consequences of long-term exposure to microplastic include:
- metabolic disorders such as insulin resistance, obesity and type 2 diabetes,
- cardiovascular diseases including atherosclerosis and hypertension,
- cell damage and oxidative stress leading to inflammation,
- hormonal disruptions caused by chemicals released from plastic (e.g. bisphenol A, phthalates),
- particles penetrating sensitive tissues—including the brain—which raises concerns about neurodegenerative diseases.
While more research is needed, one thing is certain: microplastic should not be in our bodies.
How to reduce contact with microplastic? Practical tips
- Avoid heating food in plastic, especially cheap single-use containers such as take-away boxes.
- Choose glass, stainless steel and ceramic as alternatives to plastic containers and bottles.
- Buy loose products and pack them in your own reusable pouches.
- Limit consumption of processed foods, which are often exposed to plastics during packaging.
- Use water filters capable of capturing some microplastic particles.
- Regularly vacuum and air out your home—household dust can contain microplastic from clothes, carpets and furniture.