NEW YORK - MARCH 13: (U.S. TABS OUT) Actor Mark Wahlberg appears onstage during MTV's Total Request Live at the MTV Times Square Studios March 13, 2007 in New York City. (Photo by Scott Gries/Getty Images)

He claims he’s all natural! 

Our very own Mark Wahlberg said it first!

Mark Wahlberg Denies Using Steroids, Claims He's 'All Natural'

Mark Wahlberg denies being a customer for steroids ... saying his yolked bod is "all natural" and a result of "hard work." SUBSCRIBE: About TMZ: TMZ has consistently been credited for breaking the biggest stories dominating the entertainment news landscape and changed the way the public gets their news.