Nanoplastics may make you anxious: Study shows effects on mood and behavior

Nanoplastics are extremely small pieces of plastic that are invisible to the naked eye and are less than 1 micrometer in diameter. Because these particles are so small, they can be found throughout human biological systems, from the bloodstream to organs. A study published in the journal Neuroscience examined how these nanoplastics interfere with brain development and social behavior.

Also read: Paying with Plastic: How Microplastics are Changing Our World

Understanding the Impact of Nanoplastics

The researchers examined the effects of nanoplastics on the brain and behavior of rats. They experimented with nanoplastics on pregnant rats at different stages of development. The mice were given nanoplastics first while developing in the womb, then as infants, and finally during early adulthood. Their behavior and brain activity were evaluated during the experiments. The researchers found that the timing of exposure of the mice to nanoplastics was important. When rats were exposed to nanoplastics, they showed very different reactions.

different reactions

Mice that were exposed to nanoplastics during late pregnancy or early adulthood had problems with social behavior. Unfamiliar places will make them anxious and even start to freeze, causing extreme signs of distress. The researchers also found that these mice displayed less social familiarity, meaning they were less connected with other mice and did not interact in a normal, comfortable way. These rats were very worried.

For these mice, brain activity in dopamine-related areas was disrupted. Dopamine is one of the hormones that regulates mood and behavior. It is often called the ‘hormone of happiness’. Maybe that’s why they become worried.

Whereas, rats exposed to nanoplastics midway through pregnancy did not move as much and their movements were much slower. Mice exposed to nanoplastics during adolescence had higher brain activity, but their behavior did not show as noticeable changes as in other developmental stages.

The result is important because it shows how dangerous nanoplastics can be. These small fragments can also enter the body during sensitive times like pregnancy. This has long-term consequences as they can disrupt brain functions related to mood, social interactions and even movements.

Disclaimer: This article is for informational purposes only and is not a substitute for professional medical advice. Always seek the advice of your doctor with any questions you may have about a medical condition.

Also read: Plastic production to reach 1.1 billion tonnes by 2050: Study raises concerns over health risks from microplastics