Lindsay said in January that she had checked into the centre. Her publicist Leslie Sloane Zelnick confirmed in December that she was attending Alcoholics Anonymous meetings.

But the star of Mean Girls and Freaky Friday told Allure: "I don’t know that I’m necessarily an addict."

On her fractured family past, Lindsay laments that she had to intervene in fights between her mother Dina and father Michael, now divorced, while growing up.

Her estranged father was released from a New York state prison last month after serving almost two years for driving while intoxicated and other charges.

"I feel like a second parent in the sense that I helped raise my family," she said of her younger brother Michael, 19, sister Ali, 13, and brother Dakota, 10.

"When my friends and family are around me, I feel like they’re safe. No matter what happens, we’re going to be fine."

Lindsay: They’re not safe without me - April 19 2007
Lindsay Lohan apparently claims she acts as something of a protector to her friends and family.

The Mean Girls actress, infamous for her relentless partying, says she fears for their well-being when she’s not around, according to the New York Post.

In an interview with Allure magazine, she reportedly said: "When my friends and family are around me I feel like they’re safe... When my friends have left me - I’ve just seen everything collapse. They’re not safe without me."

The 20-year-old also discussed her recent stint in rehab, apparently expressing surprise that she ever ended up there.

"It’s so weird that I went to rehab," she’s quoted as saying. "I always said I would die before I went to rehab."

Meanwhile, Lindsay is thought to be lining up her next movie project, a film about a group of teenagers dropping acid on a cross-country road trip.

Lindsay keen on drug drama - April 12 2007
Lindsay Lohan may be trying to embrace a life of sobriety off-screen, but the recently-rehabbed starlet looks set to embark on a drug-addled journey of discovery with her latest choice of film role.

After wrapping her latest film, I Know Who Killed Me, with director Chris Siverston Lindsay told Entertainment Weekly that she’s already expressed interest in his next project, about a group of teenagers dropping acid on a cross-country road trip.

Lindsay says that one of the teenagers in the film, called Hippy, suffers a bad trip, goes crazy "and starts, like, killing people".

Describing her eagerness to work with Chris again, Lohan gushed: "I have so much faith in [Siverston], just as a person, and I just love working with him. I love him [so much] as a person, that while we were on set, I was like, ’Let’s make a deal right now’."

Lindsay added that the film will also reunite her with actor Marc Senter, who stars alongside Li.Lo in I Know Who Killed Me and also featured in Chris’s 2005 horror, The Lost.

"The Lost is such a good film," added Lindsay. "That was the one that I first saw before working with [Chris]. I think Chris is going to be huge. I have no doubt in my mind about that."

Lindsay’s family values - Mar 29 2007
Lindsay Lohan is taking the moral high ground and trying to forge a relationship with her ex-convict father Michael.

Lohan Sr has just out of jail, where he served almost two years for driving under the influence and assault. He turned to God whilst inside and even went as far as becoming an ordained minister.

And it seems Li-Lo is giving her dad a slightly cautious second chance, by phoning her estranged parent, according to Us Weekly,