Nearly one in six college students has been diagnosed with or treated for anxiety within the last 12 months, according to the annual national survey by the American College Health Association.

The causes range widely, experts say, from mounting academic pressure at earlier ages to overprotective parents to compulsive engagement with social media. Anxiety has always played a role in the developmental drama of a student’s life, but now more students experience anxiety so intense and overwhelming that they are seeking professional counseling.

Anxious Students Strain College Mental Health Centers - NYTimes.com