Kirstie Alley's 'Big' Weight-Loss Plan

March 19, 2010— -- Kirstie Alley's battle with her weight has been splashed across tabloid magazines and shown on television for years -- and it's about to start again.

This Sunday marks the premiere of her new reality show, "Kirstie Alley's Big Life," on A&E. The actress lets cameras into her home to document her weight-loss struggles.

"I thought there was some merit to watching the journey. I mean, this is something that millions of people are struggling with," Alley told "Good Morning America" this morning. She said that she has already lost 20 pounds.

Alley, who starred in the 2005 comedy series "Fat Actress," also launched a new weight-loss plan called "Kirstie Alley's Organic Liaison." The program says the plan is "dedicated to stopping the roller-coaster ride of losing weight." The plan uses organic products and dietary supplements, according to its Web site.

Her new diet plan created a buzz this week, following reports that her company might have links to the Church of Scientology, a charge Alley denies.

"It's about as linked to it as "Cheers" was or Pier One or Jenny Craig. It's sort of [a] ludicrous concept," Alley, who has been a member of the church for 30 years, said.

"It doesn't even make sense to me how a business is a front for a religion. … It is absolutely not true," Alley said.

Alley said she began to gain weight six years ago, at the age of 53, when her bad habits of eating candy and soda and other sugary treats caught up with her.