Hillary is not at a particularly high risk of such an event (and almost certainly at lower risk than many/most previous nominees).
You have no evidence to make this claim anymore than anyone can say otherwise but, the felon Hillary's odd physical behavior is what has brought this issue to the forefront. It is up to her to prove it false by releasing her medical records publicly, or deal with the questions that people are asking about her physical health condition, her mental health is a given, any laymen can diagnose she is mentally unstable...she is a progressive liberal which in and of itself is a mental disorder.