Jennifer Aniston shuns junk food after bad Big Mac experience

Jennifer Aniston has been turned off McDonald's burgers for good after suffering a bad reaction to the junk food.

The former Friends star, who is known for her clean-living, reveals she and her fiance, actor Justin Theroux, were once faced with no other option but to eat at the fast food chain - but she could barely stomach the greasy meal.

She tells New York Magazine, "I'll never forget when Justin and I were on a road trip and we were so hungry. The only thing around was McDonald's. I think I ordered a Big Mac. Wow, my body did not react well to that! It was like putting gasoline in a purified system.

"I am always trying to eat organic and natural foods, so that just made my stomach turn and made me feel terrible."