Home alone? Or not home at all? Former child actor Macaulay Culkin's shocking appearance has fans worried. Last week, a picture of the 31-year-old was obtained by Entertainment Tonight showing Culkin looking like a mere shell of his old self. In the photo, the famous Home Alone actor appears gaunt and ghost white. Radaronline.com spoke with a nutritional expert (who notably hasn't treated Culkin) and here's what the guru had to say about Culkin's appearance, "He looks very sick. Either he is heavily partying or he is very ill. What he has could be a number of things, but lung illness, digestive problems or immune deficient disorders, are what come to mind," Culkin's rep maintains that everything is just hunky dory, telling ET: "Macaulay Culkin is in perfectly good health." Just 24 hours after the pictures surfaced, Culkin pulled out of his monthly DJ appearance at a club in NYC. In his place, he turned over an iPod with his playlist, along with a box for canned goods in place of an admission charge. Hopefully, the food was for him. Perhaps Culkin's frightening appearance is the result of a broken heart. He and girlfriend of eight years Mila Kunis split less than two years ago, which is enough to make any man lose his appetite. Of course, Culkin was also arrested in 2004 for possession of pot and illegal prescription drugs.