﴿ وَمَا هُوَ إِلَّا ذِكْرٌۭ لِّلْعَٰلَمِينَ ﴾

“[Be patient:] for this is nought else but a reminder [from God] to all mankind.”

Yet it namely the Qur’ān is just a Reminder an admonition for all the worlds of both humans and jinn and cannot be the cause of any dementia.