Miley Cyrus Liam Hemsworth Break Up: Rumors Of Split Cause Eating Disorder? ‘We Can’t Stop’ Star Sticks To Strict Diet And Exercise Regime ‘Like A Religion’ During ‘Stressful Times’

Miley Cyrus and Liam Hemsworth's rocky relationship have prompted a plethora of break up rumors, but one source suggests speculation the "We Can't Stop" star's drastic weight loss is caused by relationships from her loved ones is true.

A source told Heat Magazine that Miley Cyrus deals with issues involving her family and fiancée Liam Hemsworth by maintaining a strict diet and exercise regime and that some are concerned where she'll end up.

"Her diet and exercise regime has become like a religion - it's what's getting her through one of the more stressful times of her life," the source told Heat Magazine.

"But she can't carry on this way. People are scared she'll make herself ill."

Miley Cyrus regularly eats raw vegetables, fruits and egg-white omelets after working out for two hours a day in the gym and running five miles three times a week, the source told Heat Magazine.

But Miley Cyrus and Liam Hemsworth's break up rumors have also revealed the couple argues over her increasingly gaudy sexual public appeal and behavior.

"They've had a lot of fights about it ... Miley doesn't think Liam has any right to tell her to tone it down. He plays different characters for his career and this is the character she's playing right now for her career," the insider told Perez Hilton.

"She has made some adjustments because she wants to keep the peace. It might not look like it, but she toned down a lot of stuff in her 'We Can't Stop' video. It's a hard line to walk because she's trying to be respectful to Liam but also be true to herself as an artist."