Loose Women's Thursday episode was an emotional one as Denise Welch opened up about her battle with depression.Ahead of the release of her new book, The Unwelcome Visitor, the 62-year-old spoke candidly about the past 30 years, throughout which she has struggled with her mental health.At a number of points in the interview, both Denise and her co-star Nadia Sawalha were moved to tears, reflecting on the heartbreaking impact of depression on the lives of many.Denise said: "I think the darkest moments were at the very beginning when I dint know anything about the illness."But obviously over 30 years, I've talked to thousands of women whose depression starts this way."Outlining the motivation behind her book, she said: "It's not striving for.