The News of the World (I know about as reliable as Nicole Richie’s dietitian) is reporting some very disturbing things about former pop tart Britney Spears. The paper reveals her drug addiction, suicide attempts, and reconciliation plans with Mr. Kevin Federline.

A rehab insider reports of Brit’s total breakdown within the facilities closed walls:

In a week of rehab madness the bonkers beauty wrote the number of the beast, 666, on her shaved head before running round the clinic screaming “I am the Antichrist!” at frightened staff.

“The clinic people just didn’t know what to do. Then she started screaming, ‘I’m a fake! I’m a fake!’ It must have been really frightening.

Spears bi-polar/multiple personalities flared up again when seeing Federline:

But within days out-of-control Britney had swung from SUICIDAL to MATRIMONIAL as she told hubby Kevin Federline she wanted to take him back, renew their wedding vows and get PREGNANT.

A source close to the clinic said: “Britney has realised what a rock Kevin has been to her, and how out of control she has acted recently. “She has been talking to Kevin every night for hours on the phone, telling him she still loves him.

“She just wants to be with him again, and thinks having another baby will seal their marriage.

Her drug problems are also starting to surface to those outside her inner ring:

It has been alleged the former pop princess’s erratic behaviour has been caused by Class A drug crystal methamphetamine.

Crystal meth — which can be either snorted or injected — affects the brain and nervous system, triggering side effects like agitation, paranoia, confusion and violence.

Britney has struggled with drugs before and sources close to the rehab clinic have said she is attending sessions designed to address drug and booze problems.

Pals have claimed that they have seen her taking cocaine and ecstasy in the past.

She also has tried to kill herself more than twice in the last month:

“Later that night she tried to kill herself,” a friend told us. “She attached a sheet to a light and tied it around her neck. Paramedics were called, but luckily she was unhurt.”A week ago she threatened to kill herself by gulping down two family-size bottles of painkillers.

A pal told us: “Britney held up two bottles of Tylenol (an American painkiller) and shouted, ‘I’m gonna do this, this is it! I’m through with the whole f***ing circus’.”

Kevin seems to have stepped up and perhaps the one friend that Brit can depend on:

And Kevin has responded to it. We exclusively revealed last week that he visited her in the clinic and promised to stand by her if she cleaned up her act and got well.

Since then the father of her two children, Sean Preston, one, and Jayden James, five months, has been a regular visitor.

A source close to Britney said: “Kevin has been a real tower of strength for her and she has finally decided to give their marriage another shot.

My geezum one can only hope that most or all of these claims are false, but it appears that they are probably true or closer to the truth than not. God’s speed to Britney Spears and a full recovery.

More stories regarding Britney Spears’ Mental State

• Will 3rd time be charm for Britney and Rehab?
• Is Britney Suffering from Post-Partum Psychosis?
• Video of Britney attacking the Paps
• K-Fed going for custody of his boys
• Britney Ditches Rehab (AGAIN)
• Britney Spears enters Rehab (again) this week
• Britney Spears totally ‘wiggin’ out
• Britney’s mop of hair being sold on Ebay
• Britney goes from Bald Eagle to Bald Head
• Worst Bald Head of the Day: Britney Spears
• Britney goes Bald YouTube Video
• Bloggers respond to Bald Brit Madness
• Britney Spears enters, leaves rehab in same day
• Britney Exposes her Bald Spot