Insiders raise questions about the types of people attracted to these shows — and the screening process and support offered.

Dr. Richard Levak, a California-based personality expert who has worked on several reality shows, including “Survivor,” says the spate of suicides among reality-TV stars boils down to a chicken-or-the-egg debate.

“Does [appearing on reality television] attract people with a higher rate of instability?” Levak asks. “Are people who are unstable more interested? Or do the vagaries of reality TV precipitate people killing themselves?”

Two weeks ago, “The Bachelor” Season 14 contestant Alexa “Lex” McAllister, 31, became the latest fatality when she overdosed on prescription pills. Gia Allemand, from the same season, hanged herself in 2013. Three years earlier, 35-year-old Julien Hug, a 2009 “Bachelorette” contestant, shot himself in the head.