Thalassitis, who was in the same season as Mitchell, killed himself in March, at age 26. Another former contestant, Sophie Gradon, 32, who appeared on the show in 2016, killed herself last June. These deaths, as well as that of a guest who appeared on “The Jeremy Kyle Show,” a tabloid-style daytime TV show that has since been canceled, will be the subject of an inquiry by the British Parliament into the treatment of reality TV contestants.

The committee leading the inquiry is seeking submissions from the public and broadcasters to decide whether enough support is offered during and after filming, and whether the government should take action.

Jo Hemmings, a psychologist who works on reality shows in Britain, said in an interview that a lack of regulations on programs like “Love Island” led to poor judgment. “There are a few recommendations knocking around, but nothing that obliges anyone to do anything,” she said.

“The things that make reality TV entertaining are things like conflict, distress, jeopardy, the unexpected,” she added. “None of these things are things we would promote in terms of mental health positivity.”

Hemmings said contestants needed ongoing support after the cameras stopped rolling because the effect of leaving the show was stress-inducing regardless of whether they became famous. “That is a really, really hard thing for people to take on in psychological terms,” she said.