Obsessive compulsive disorder and childhood infections like strep –
A 2010 team of researchers developed a new animal model to show how exposure to strep affects the brain and leads to a number of physical and mental ailments. According to one of the collaborators, Daphna Joel,
“It's almost impossible to show how strep can lead to OCD in humans ― almost all of us, even very young children, have been exposed to the bacterium at one time or another. But childhood seems to provide a distinct window of opportunity for the disorder to take root through strep infection. This work was presented at a 2010 meeting and is expected to be published at the beginning of 2011.