American Idol season seven winner David Cook has lost his oldest brother Adam Cook to brain cancer.  David announced his brothers passing this morning in Washington D.C., where he was serving as grand marshal at the 12th Annual Race For Hope 5K walk/run event.

The eldest of the three Cook brothers had battled the disease since 1998 and died at 1:00 a.m. on May 3, 2009.  David Cook took the podium and addressed the crowd by saying, “I actually lost my brother yesterday to a brain tumor and I couldn’t imagine being anywhere else right now.  I lost one today but I gained 9,000 and I will be here every year that they will have me.”

Adam Cook, 36, practiced law in Terre Haute, Indiana.  He is survived by his wife Kendra Cowen-Cook and their two children, Gage and Gracie.

David Cook also ran in the D.C. event.  His team raised more than $40,000 for the cause.  Check out David Cook in Washington D.C. earlier today in video below.

[youtube]http://www.youtube.com/watch?v=r47cZwLUsJ4[/youtube]

[youtube]http://www.youtube.com/watch?v=j3mDPw1QUfc[/youtube]

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