Mental illness is not exactly uncommon. According to the Mental Health Foundation, one in four people will experience a mental health problem in their lifetime and mental illness makes up 28% of all diseases in the world – the biggest by far. Going by this, several people you know will have suffered with a mental illness. It could be your mother, your brother, your cousin or your best friend. It could even be you. So why are we so insensitive when it comes to celebrities and mental health?