Hello Sir..my Father Is 75 Years Old ..hz In Highly

Hello sir..my father is 75 years old ..hz in highly diabetic patient. .since last 5 years his creatine has also increased..Prior it was stable between 2 to 3..Under medication but for the last 5 months it is increasing on an alarming ratio..Dr is saying dat I cannot be stopped now..I am highly tensed and want to know is it true