The largest-ever study on Ireland's youth mental health has been launched in UCD this morning.
The college is teaming up with Jigsaw, the National Centre for Youth Mental Health, to carry out a nationwide survey.
Meanwhile, a separate survey by Zenflore revealed that an overwhelming majority of parents and students are stressed about being back at school and college.
The new survey found that the cost of education was highlighted as the biggest factor for parents, with 77% of respondents citing it as a problem.
For students, the biggest stress is doing well in exams, followed by money worries.
However, for parents, doing well in exams is less important than their child making new friends, or even knowing where their child is.
Ted Dinan, Professor of Psychiatry at UCC, says excessive stress can have a negative impact on people's mental health.
Prof. Dinan said: "Stress in low levels is good for us all, I mean it makes us perform better.
"But, of course, if stress is excessive, if students going back to universities are under major financial pressure and they have to work outside the university for excessive hours and they are under an awful lot of stress and strain, that can lead to mental health issues.
"Even for students returning to college after a summer break, there is the added challenge of new classes, new friends and perhaps a new location."