Many ordinary medications don't just affect our bodies they affect our brains. Over the years, [researcher Beatrice] Golomb has collected reports from patients across the United States " tales of broken marriages, destroyed careers, and a surprising number of men who have come unnervingly close to murdering their wives. In almost every case, the symptoms began when they started taking statins, then promptly returned to normal when they stopped; one man repeated this cycle five times. From paracetamol (known as acetaminophen in the US) to antihistamines, statins, asthma medications and antidepressants, there's emerging evidence that they can make us impulsive, angry, or restless, diminish our empathy for strangers, and even manipulate fundamental aspects of our personalities, such as how neurotic we are. But Golomb's most unsettling discovery isn't so much the impact that ordinary drugs can have on who we are " it's the lack of interest in uncovering it. "There's much more of an emphasis on things that doctors can easily measure," she says, explaining that, for a long time, research into the side-effects of statins was all focused on the muscles and liver, because any problems in these organs can be detected using standard blood tests. This is something that Dominik Mischkowski, a pain researcher from Ohio University, has also noticed. "There is a remarkable gap in the research actually, when it comes to the effects of medication on personality and behaviour," he says.