The impact of microplastics on human health: what we know so far.

Microplastics have infiltrated various aspects of our environment—oceans, air, food, and water—and have even been detected in human body tissues, including the heart, liver, kidneys, and reproductive organs. However, the extent of their impact on health remains a developing area of research.

What Are Microplastics?

Microplastics are tiny particles resulting from the breakdown of larger plastic materials. They can range from the size of a pencil eraser to fractions of a human hair’s width, with nanoplastics being even smaller. These particles are found in air, water, soil, and a wide array of foods, including salt, sugar, honey, rice, and seafood.

Are Microplastics in You?

It’s highly probable. Research indicates that microplastics are present in human tissues, with varying levels of exposure depending on diet, environment, and lifestyle. A 2019 study suggested that individuals might consume approximately 5 grams of plastic weekly from food and beverages—equivalent to a credit card. While this figure is debated, the presence of microplastics in body tissues, including sensitive areas like ovaries and placentas, has been documented.

Will Microplastics Hurt You?

The health implications of microplastics are still under investigation. The World Health Organization’s 2022 report found no clear risk to human health based on current evidence. Despite this, researchers are concerned due to the toxic chemicals associated with plastics. Microplastics have been linked to inflammation and other health issues, potentially increasing risks for heart attacks and strokes. A small study published earlier this year suggested a possible association between microplastics in arteries and a higher risk of cardiovascular events, though the study’s conclusions are still debated.

What Can You Do About Microplastics?

To minimize exposure, consider these steps:

  • Remove shoes before entering your home to avoid tracking in dust that may contain microplastics.
  • Prepare and consume fresh fruits and vegetables at home, and avoid microwaving food in plastic containers.
  • Use reusable stainless steel or glass water bottles instead of disposable plastic ones.

For families facing financial constraints, focusing on essential needs may take precedence over concerns about microplastics. The field is evolving, and while the current evidence is concerning, definitive conclusions about long-term health impacts are still forthcoming.