Drew Barrymore says her female friendships have 'anchored' her life the most

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• Drew Barrymore says her female friendships have kept her "anchored" through the years.
• Research has shown that having strong friendships is as important as exercise for longevity.
• However, it can be difficult to make and maintain friendships in adulthood.

Drew Barrymore, 49, is grateful that she has supportive female friends to rely on.

During Wednesday's episode of "The Drew...