I don't know what to think about it. I heard it on the news and from OSU that a study was done on the effects of acetominophen (Tylenol). People taking the drug were found to be less sensitive to other people's physical and psychological pain. Hmm. I wonder if the study will hold up. I need to read the original paper on it.
My mother has taken Tylenol III for many years. She has zero empathy with me and little with others. Could the Tylenol be contributing to this? Interesting question for me.