Us Weekly reported Lohan entered the posh Wonderland Center in Los Angeles at 2:30 p.m. Wednesday, arriving in a sports utility vehicle and clutching a Jamba Juice.

    "I have made a proactive decision to take care of my personal health. I appreciate your well wishes and ask that you please respect my privacy at this time," said the 20-year-old actress in a statement issued Wednesday through her publicist, Leslie Sloane Zelnick.

    Zelnick confirmed to The Associated Press in December that Lohan was attending Alcoholics Anonymous meetings.

    Lohan told People magazine then that she had been going to the meetings for a year.

    "I haven't had a drink in seven days. Or anything," she said to People. "I'm not even legal to, so why would I? I don't drink when I go to clubs. I drink with my friends at home, but there's no need to. I feel better not drinking. It's more fun. I have Red Bull."

    Last July, Lohan was treated for several hours at a Los Angeles area hospital for overheating and dehydration on the set of "Georgia Rule."

    The actress, whose other screen credits include "Mean Girls," "Bobby," "A Prairie Home Companion" and "Freaky Friday," recently had surgery to remove her appendix.

    (Agencies)