My bet is on the microplastics that have been found everywhere, from the arctic snow[1] down to the placenta of unborn babies[2]. They are known to be endocrine

My bet is on the microplastics that have been found everywhere, from the arctic snow[1] down to the placenta of unborn babies[2]. They are known to be endocrine disruptors, however they only got their media spotlight (as far as I am aware) in the last ~4 years. Thus we're far away from being able to fully understand their effects on the human body. Fun part is that I have some crazy (non-scietifically backed) theories that they are the cause of behavioral changes in humans which became more prominent in our society in the last 10-20 years. Unfortunately this is unresearched territory, as the only important article I came across were related to animals thus far [3][4] [1] https://www.nationalgeographic.com/environment/article/microplastics-found-in-arctic-snow https://www.nationalgeographic.com/environment/article/micro... [2] https://www.theguardian.com/environment/2020/dec/22/microplastics-revealed-in-placentas-unborn-babies https://www.theguardian.com/environment/2020/dec/22/micropla... [3] https://pubmed.ncbi.nlm.nih.gov/32629346/ https://pubmed.ncbi.nlm.nih.gov/32629346/ [4] https://pubmed.ncbi.nlm.nih.gov/31673028/ https://pubmed.ncbi.nlm.nih.gov/31673028/