Arianna Huffington set to leave Huffington Post
Arianna Huffington says she is stepping down as editor-in-chief of The Huffington Post to focus on a new health start-up.
She founded the site in 2005, and it grew to become one of the biggest online media players. It is currently owned by Verizon Communications.
The departure comes several weeks after Verizon said it was buying the media properties of Yahoo for about 4.8 billion US dollars (£3.7bn).
The Huffington Post is known for its celebrity and newsmaker blogs and for putting together articles using information from different newspapers and other sources.
On Thursday morning, The Huffington Post home page linked directly to a Wall Street Journal article announcing her departure.
Ms Huffington's new venture, Thrive Global, will provide training, seminars and coaching about reducing stress and exhaustion.
The company, which is expected to launch in November, shares a name with her well-being book Thrive. Earlier this year she published The Sleep Revolution, a book about getting more sleep.
Ms Huffington said she could not run The Huffington Post and Thrive Global at the same time.
"Running both companies would have involved working around the clock," she said in a press release, "which would be a betrayal of the very principles of Thrive I've been writing and speaking about."