Jonny Mitchell, who starred in the 2017 series, said the care provided in the lead-up and aftermath of the reality show was not good enough.
The discussion comes after Love Island star Mike Thalassitis is thought to have taken his own life over the weekend.
Several reality TV personalities have posted tributes to the 26-year-old after news of his death.
His management has confirmed his death. Thalassitis found fame on the 2017 series of the show and was a semi-professional footballer.