The latest Public Health report shows a significant number of 16-24 year olds are put off staying on the island because of cost pressures.
The report is subtitled the 'The Voice of Future Generations' and of the 200 respondents, many are concerned that the high cost of living will force them to settle elsewhere.
Housing, food, electricity costs and the price of getting off the island add up to many feeling that a move to the UK, or not returning after university, is their most practical option.
The director of Public Health, Dr Nicola Brink, warns it 'reflects a broader tension between the island being a good place to grow up but not necessarily a viable place to build an independent future.'
She is urging politicians to tackle these problems now:
"Young people are not only the next generation of our workforce and community leaders, they are the foundation of a sustainable and thriving Bailiwick.
"The decisions we make today will shape the health, wellbeing and prosperity of our islands for decades to come - their voices must remain central to those decisions."
Poor mental health is a key concern among 16-24 year olds in Guernsey and Alderney.
More than one quarter said they experienced an issue - a figure more than double that of the adult population.
Of the young women surveyed, none claimed they had high feelings of mental wellbeing which contrasts sharply with the over 75s, where nearly one quarter boast good mental health..

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