The largest study yet looking at whether conditions such as depression and anxiety could spread between teenagers finds that one person in a class being diagnosed is linked with a higher risk for their classmatesThe largest study yet looking at whether conditions such as depression and anxiety could spread between teenagers finds that one person in a class being diagnosed is linked with a higher risk for their classmates The largest study yet looking at whether conditions such as depression and anxiety could spread between teenagers finds that one person in a class being diagnosed is linked with a higher risk for their classmates New Scientist – Home