Demi Moore Covers PEOPLE: She ‘Was Always Fixated on Being Young,’ Says Source (PHOTOS)

As she sees treatment following her Jan. 23 hospitalization, new details are emerging surrounding Demi Moore’s ongoing battle with insecurity, and the desperate moves she made to keep her marriage to Ashton Kutcher in tact.

In PEOPLE’s latest cover story, sources claim that Demi “was barely eating and partying wildly before her drug-fueled breakdown.”

“As Demi got older, she convinced herself that she needed to stay young and skinny to remain attractive to her husband,” the source added.

According to another source, Demi “was always fixated on being young. And the only thing that tied her to that, as she got older, was her marriage to a younger guy and hanging around young people.”

Demi’s marriage to Ashton fell apart last year amid rumors that he had cheated on her with multiple women. She announced her plans for divorce in November, saying, “As a woman, a mother and a wife there are certain values and vows that I hold sacred, and it is in this spirit that I have chosen to move forward with my life.”

Demi was hospitalized earlier this month after a reported seizure. The details of her now-infamous 911 call can be heard here.

For more on Demi’s downfall, pick up a copy of PEOPLE, on stands now.