The number of 18 to 35-year-olds contacting the UK's leading gambling advice service has risen for a third consecutive year.
GamCare's figures show more than 60% of their calls in the past 12 months were from that age group.
It says smartphone and online betting are playing a big part in the rise of young people developing gambling problems.
Adam Brown, 24 and from Long Eaton in Derbyshire, says he first gambled when he was 19 starting with occasional visits to a betting shop.
He says using his smartphone to gamble was "disastrous" and became an addiction.
If you think you or someone you know has been affected by gambling addiction you can contact GamCare online or via their helpline.
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