Self magazine's Editor-in-Chief Lucy Danzinger and Publisher Laura McEwen are leaving the title, according to parent company Conde Nast, in a shakeup to a title that has shed print ad pages for the last six straight years.

Conde Nast raided Cosmopolitan to replace Ms. Danzinger, an 18-year veteran of Conde Nast, naming Joyce Chang, Cosmo's executive editor, as Self's new editor-in-chief effective May 1. Ms. Chang has worked at a variety of magazines, including Hearst's Marie Claire, Time Inc.'s People, The New York Times Magazines and Conde Nast's Lucky and Allure.

"I am so pleased to welcome Joyce back to Conde Nast," Anna Wintour, Conde Nast's artistic director and editor-in-chief of Vogue, said in a statement. "Her diverse resume of experiences has taught her the power of a strong and intelligent woman. I'm excited to see the new direction she will bring to Self."

A successor for Ms. McEwen will be named soon, the company said. She had been with the company for the past six years.

Ms. McEwen and Ms. Danziger did not immediately respond to messages left at their offices.

In February, Self became one of the latest Conde Nast-owned titles to get a dedicated digital video channel. But print ad pages at the magazine fell 5.7% last year, according to Publishers Information Bureau, extending a loss that began in 2008 even as other fitness and healthy living titles such as Women's Health have prospered of late.

Self has been embroiled in a controversy after it ridiculed a new running trend in which women wear tutus using a photo of brain-cancer survivor Monika Allen as she ran the L.A. Marathon. The photo choice sparked an outcry that drew national attention and provoked promises to cancel subscriptions on Self's Facebook page. Ms. Danzinger publicly apologized to Ms. Allen.

"I had no idea that Monika had been through cancer," she told USA Today. "It was an error. It was a stupid mistake."

The controversy had nothing to do with her exit, according to a Conde Nast employee with knowledge of the situation.