No the problem is not about madness or something,it may be natural but I will be happy if there is a way out. My grandmother (age 80 years) is behaving sometimes wrongly. 1) She tells about some incident with false fact. That means she tells about incident occured a year ago ,but this didn't happen I think she cannot retain recent incidents(year span 10 to 20 years) 2)She always argued with some illogical facts. 3) She wants to eat what doctor tells not to eat.(Like sugar,oily foods) When we try to convince her, she become furious and start emotional blackmail. It always happen when it comes to some activities. This all started a year ago. What should I do to convince her the right things?