"Memento" is not unfair to diabetics.... 
Rating: Null/10 (13 April 2001)

Many things went through my mind as I saw "Memento", but the last thing I was thinking about was how "helpless" or "invalid" diabetics are. Sammy Jankis' wife has her husband give her insulin injections, but that is clearly HER CHOICE. Obviously, she can give herself injections if she has to. Sammy's wife doesn't die because diabetes has made her helpless, but rather because she doesn't believe that his short-term memory loss is a real condition. She gambles that if she asks Sammy to give her another insulin shot after he has "forgotten" it, his love for her would snap him out of this condition and her "old Sammy" will return. Unfortunately, she's wrong and dies as a result of her gamble. Since it was Leonard's advice that ultimately led her to take this action, he is haunted by her story throughout the film. But none of this would have happened if she gave herself the insulin shots.
I am not an expert in diabetes, but criticism of this film that it demeans diabetics reminds me of Italian-American groups that slam masterpieces like "The Godfather", "GoodFellas", or "The Sopranos" simply because they depict Italian-American characters as gangsters......