1. Brain death is defined as a lack of consciousness while other physiological functions continue, but it is not equivalent to biological death. Improved life support technologies have complicated how brain death is defined.
2. The case of Jahi McMath in 2013 brought attention to the issue as her family disputed the brain death diagnosis and fought to continue her life support, despite signs that met brain death criteria.
3. While brain dead patients are not biologically dead, the medical profession largely treats brain death as death for legal purposes. However, this definition is not entirely scientific and the terms "brain death" and "death" require clearer distinction.