The Small Dangers in Your Chinese Herbal Tea Bags

Have you ever thought about what happens to the plastic bags that hold your traditional Chinese herbal decoction? It's convenient for sure, but there might be some hidden trouble brewing inside. When these bags are filled with hot water, they release tiny bits of plastic, known as micro and nanoplastics (M/NPs). These particles can be really small, with some nearly invisible to the naked eye. The hotter the water, the more small plastic bits are released. What’s more, these plastics can alter the effectiveness of the herbal medicine and may even cause inflammation. Scientists found that cells exposed to these plastic pieces showed increased amounts of reactive oxygen species (ROS), a sign of inflammation. So, why does this matter? Well, think about it this way: every time you boil water for your tea, you could be consuming millions of these tiny plastic bits. Imagine drinking 2, 115 to 17, 300 microplastic particles per day or even up to 61. 68 million nanoplastics! Whoa, that's a lot of tiny plastics!

Scientists investigated the release of M/NPs from these bags under different scenarios. They filled the bags with water at temperatures from 40°C to 100°C and stored them for up to 14 days before reheating and drinking. They found that one package could release anywhere from 0. 15 to 1. 21 million microplastics (and more than 60% of these were smaller than 2 microns) and 0. 48 to 4. 32 billion nanoplastics (with over 40% smaller than 100 nanometers). Here’s the thing: microplastics decreased as temperatures went higher, while nanoplastics increased, peaking after one day and seven days, respectively. So, the hotter your water, the more nanoplastics you might be ingesting. Doesn't that make you think twice about your morning tea ritual?

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