As we previously reported, the Charlie's Angels star was admitted to hospital on Monday (23rd January), with a rep stating that Moore was suffering from exhaustion.
However, further reports have suggested that Demi was being treated for problems related to the eating disorder anorexia, after a female friend found her having a suspected seizure at her Beverly Hills home.
Further rumours have also emerged regarding the 49-year old's hospitalisation, with US reports suggesting that Moore was inhaling nitrous oxide from aerosol cans, also known as whip-its, the night the 911 call was placed from her home in Los Angeles.
A source tells UsMagazine.com: "She has spiralled and gotten to a place where she is struggling too much to function ... Her life is completely in crisis. She is turning 50 and has no idea who she is or what her focus should be."
A separate source has since told People magazine that Kutcher is very worried about his wife of six years, telling the publication: "Ashton is deeply concerned for Demi,
"He still cares about her and wants the best for her. But their marriage is ending and they are both moving on with their lives."
The Two And A Half Men actor has now arrived back in LA after a break to Brazil with his friends, with reports claiming he may have returned to see Demi - who has apparently been released from hospital.