I read another article about plastic tea bags just now. A researcher at McGill University stopped on her way to work to get a cup of tea. As she sat drinking it, she noticed that the tea bag was made of plastic. When she got to work, she organized her fellow researchers to look into this. Like the previous study, their results show that a single tea bag releases billions of tiny pieces of plastic into the cup of tea. Although they didn't look into the effects of this plastic on humans, when they gave it to water fleas, the fleas suffered harmful effects.

I checked my supply of tea bags because I have some of the pyramid-shaped bags like the ones pictured below. Mine are Lipton chai tea bags, and they are plastic. I had to examine them closely because they don't look like plastic at a casual glance. My tea bags that have the traditional shape are plastic. I don't need a scientific study to tell me that consuming plastic isn't a good idea.

https://www.google.com/search?q=plastic+tea+bags%5C&rlz=1C1CHBF_enUS716US717&oq=plastic+tea+bags%5C&aqs=chrome..69i57j0l2j69i61j69i60j69i61.4377j0j1&sourceid=chrome&ie=UTF-8