Honolulu (HawaiiNewsNow) - The family of British singer Amy Winehouse believes that the singer's decision to quit drinking cold turkey may have led to her death. During a tribute at his daughter's funeral Amy's father, Mitch Winehouse, offered a theory as to why the singer passed away. He said doctors had told Amy to gradually reduce her intake of alcohol and to avoid binging at all costs. Amy told him she couldn't do that. It was all or nothing and she gave up completely. Mitch said the shock of giving up, after everything she had been through over a bad few years, was just too much for her to take.