Macaulay Culkin is said to be smoking a whopping 60 cigarettes a day, leading to new health fears for the troubled former child star.

“He’s put his nicotine addiction into overdrive,” a source told the National Enquirer.

“Almost every time I see him, he has a cigarette dangling from his lips and is puffing furiously.”

The effects of his unhealthy habit are starting to show, said another source.

“He’s coughing a lot, his teeth are yellowing, and friends and family are worried he’s killing himself.”

Experts tell the publication that Macaulay Culkin ‘s addiction puts him at serious risk of contracting lung cancer.

Macaulay Culkin is said to be smoking a whopping 60 cigarettes a day, leading to new health fears

Jerome Spunberg, a radiation oncologist in Palm Beach Gardens, Florida, (who has not treated the star) told the National Enquirer that Macaulay Culkin has “30 times the risk” of dying from the disease than someone who doesn’t smoke.

Another doctor, Herman Kattlove, former spokesperson for the American Cancer Society, said Macaulay Culkin’s lung cancer risk will “eventually exceed 100 times that of a nonsmoker”.

Macaulay Culkin, 32, is also chugging cognac, beer and energy drinks, say insiders.

Sources say his recent troubles are as a result of a recent breakup with a girlfriend, and he also had a run-in with a photographer outside a nightclub in Brighton, UK.

“All of this has Mac very stressed out, and that causes him to smoke more,” said a friend.

Macaulay Culkin is best known for his roles as cheeky Kevin McCallister in the 1990 film Home Alone and the 1992 sequel, Home Alone: Lost In New York.

He also starred in the likes of Uncle Buck, My Girl and Richie Rich.

But his adult career has failed to match the blockbuster success of his childhood days.

These days Macaulay Culkin earns a living deejaying at clubs around New York.