Britney Spears' Father Uses Her Alleged Dementia to Justify Conservatorship Celebrity According to a new documentary that will be released on BBC, Jamie Spears claims his pop star daughter has a brain condition in documents filed to control her finances. May 3, 2021 AceShowbiz - Britney Spears' father suggested that the singer could be battling dementia. In another ugly part of her prolonged conservatorship, Jamie Spears allegedly claimed that his daughter has a brain condition that would justify him gaining control over her finances. The bombshell revelation will be discussed in an upcoming BBC documentary. Per The Sun's report, Jamie made the claim to explain the purpose of the conservatorship when filing the paperwork in 2008. According to journalist Mobeen Azhar, Jamie ticked a box saying it related to "dementia placement or treatment."