Loose Women star Denise Welch claimed on Friday's show that she felt "manipulated" into taking part on Celebrity Big Brother in 2012.
Though Denise won the series, she said it was a "desperately miserable" and "destructive" time in her life, and she said she regretted it.
The Hollyoaks star was discussing life regrets with her fellow panelists Nadia Sawahla, Stacey Solomon and Linda Robson.
"I sometimes think maybe I am mixing up regret with shame, and guilt, because obviously my drinking and everything in my life was in free fall, and so much was out of my control, I have a lot of shame associated with that time," Denise began.
"Do I regret not finding the strength, if it is strength, to give up drinking earlier? Yes I do.
"Career decisions, things I have turned down, things I have passed on, I don't really regret because the reasons were genuine.
"The only thing I regret if I had my time again, is doing Big Brother," she added.
'I won it but it was a hollow victory because it was a really desperate miserably unhappy time for me, and I felt manipulated into making a decision that was quite destructive for me.
"I try to live without regret, but there is often a time when I think, would things have been different if I didn't do that, but on the other hand maybe it was the catalyst to turn my life around?
"I don't know," she added, before revealing her husband, Lincoln Townely, had just pointed out she would not have met him had she not made the choices she had.
This is not the first time Denise has expressed regret over her naked antics on the show, saying in 2015: "It was not my finest hour."
But she explained she had totally turned her life around since, explaining: "My life has changed quite a lot.
"My husband and I don't drink or smoke anymore and without alcohol our life is much better. I like watching The Real Housewives while Lincoln paints."
The Mirror has contacted a representative for Channel 5 for comment.