after a mild heart attack my dad was advised by his doctor not to drive for a few weeks,i informed his insurance provider as it is part of the policy agreement,(i imagine that if he did have an accident and they found out his medical history they would not pay out) I asked them if i would need to inform them when he got the ok to drive again,thier reply was that if your doctor says that you are fit to drive then thats good enough for them.....there was no increase in price to his policy when i renewed it for him a few months later.