A 23-year-old student took his own life after writing a suicide note on the back of a letter from the bank asking for him to repay his £3,000 overdraft.
Computing student Toby Thorn, who studied at Cambridge's Anglia Ruskin, had also run up a £5,000 student loan.
He wrote on the back of a the note from his bank: "Thank you to all my friends I appreciate all your support, Later ANON."
An inquest has said his debt was a contributing factor to the suicide, the Daily Mail reported.
His mother Anne, 56, said she had "no idea" his debts were "bothering him." The single mum now campaigns for awareness of the effects debt can have on young people and is a trustee of PAPYRUS, who work to prevent suicides in young people.
"Young people can't find jobs, so they can't see a way out of debt. If graduates can't get jobs what hope is there for those without degrees?," she was quoted by The Daily Telegraph as saying.
"I'm a single mum – it's unbearable to think that Toby didn't know how much he was loved.
"People don't realise that suicide is so common in young people, especially young men. Men don't talk about their feelings. They keep it all bottled up which can lead to depression.
"I wonder if I'd been aware of the statistics would I have been looking for signs?," she said.
"I don't believe that's the only reason why he took his own life but it must have been a big contributing factor.
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