LOS ANGELES (AP) - Adam Cook, the eldest brother of "American Idol" winner DavidCook, has died from brain cancer.
He was 37.
David Cook announced the Saturday death at the 12th annual Racefor Hope 5K in Washington, D.C., where he was serving as grandmarshal.
The singer says the cause of death was a brain tumor.
Adam Cook was a lawyer from Terre Haute, Ind., who battledcancer for more than a decade.
He famously cheered for his singing sibling in the audience ofthe popular Fox signing competition's seventh season in 2008.
Julie Henricks, a friend of the Cook family, said Adam Cook diedat his Terre Haute home, where hospice nurses were helping Cook'swife, Kendra, care for him.
Henricks said she received a text message Saturday night fromKendra Cook saying that the family had gathered for a bedside vigilas Adam's condition worsened.
She said Adam Cook, an attorney who had twin 7-year-olds, a boyand a girl with Kendra, had decided to stop his chemotherapytreatments early this year after they failed to help his advancedbrain cancer.
"He was so sick and so worn out he just made that decision. Thatwas his choice. It was because he was just so tired," saidHenricks.
Adam is the eldest of Cook's brothers.
A younger sibling, Andrew, also tried out for the show butdidn't make it to Hollywood.
The death was first reported by People.com.
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