Tragic Jeremy Kyle guest Steve Dymond told one of the show's researchers "I wish I was dead" before being sent home in a taxi two hours later, an inquest heard.
The 63-year-old, who is suspected to have killed himself, died around a week after taking a lie detector test in a bid to prove he hadn't cheated on his fiancée.
He failed the test.
The show was pulled from the air after bosses learned of Mr Dymond's death, and it has since been axed.
Mr Dymond was found in his rented room in Portsmouth, Hampshire, on May 9 after splitting from his on-off fiancée Jane Callaghan.
The show's recording took place on May 2, but was never aired.
At a pre-inquest review at Portsmouth Coroner's Court on Monday, assistant coroner Lincoln Brookes was told about some of the "broad themes" Mr Dymond's family would be raising.
Speaking on behalf of the family, barrister Caoilfhionn Gallagher said Mr Dymond was "exceptionally vulnerable" and had stopped taking prescribed anti-depressants in order to take the show's polygraph test.
She said: "After his cruel shaming he did not get the appropriate support from the aftercare team."
Ms Gallagher said the amount of time between the suggestion of Mr Dymond appearing on the show and the filming was a "very short" 72-hour period.
She said: "For a decision so potentially life-changing, there is no equivalent. There is no cooling off. You are jumped on very quickly."
Ms Gallagher said that following the recording, Mr Dymond was "put in a homeward-bound taxi within two hours of telling a researcher that he was really upset and that 'life was nothing without Jane' and said 'I wish I was dead', or words to that effect".
She claimed the family had seen "no evidence" that Mr Dymond was given any welfare checks by any qualified mental health staff.
"We presume this was left to a medically unqualified researcher," Ms Gallagher, of Doughty Street Chambers, said.
Mr Dymond's death came amid growing scrutiny over the duty of care reality TV shows have to participants.
Ms Gallagher said the family has now requested internal ITV interview notes from Jeremy Kyle, the assistant producer, a researcher, and the aftercare and polygraph teams.
They have also asked for the unedited recording of the show, which ITV's barrister, Simon Antrobus, agreed to provide.
Mr Antrobus told the inquest that the aftercare team had seen Mr Dymond.
The full inquest had been due to take place on November 21, but Ms Gallagher successfully contested it should be adjourned.
She said the family had been declined legal aid and that their legal team was the only one without funding - an issue which they would be challenging.
At the opening of Mr Dymond's inquest in May, detective sergeant Marcus Mills, of Hampshire Police, said his death was a suspected suicide.
A further inquest review is due to take place on November 21, while the full inquest is scheduled to begin on April 27 2020, and last four days.
If you're struggling and need to talk, the Samaritans operate a free phoneline open every hour of the day on 116 123. Alternatively, you can email jo@samaritans.org or visit the website to find your local branch
