Researchers from The Ohio State University have found evidence that acetaminophen not only dulls physical pain, it also reduces our ability to predict pain in others and empathize. If the results are to be believed, this common drug might hamper our ability to imagine each other's discomfort.

Used to relieve pain and fever, acetaminophen - known as paracetamol in the United Kingdom - is present in at least 600 medicines in America, including Tylenol.