I am not saying they are right. I was just adding comments on what the experts in the field are thinking about. Besides, there are some clinical trials ongoing to treat "Brain Diabetes" as a way to fight Al Zheimer but nobody expects much from them, including investors. It's probably not that simple.
From "investors" word, I assume they are trying to treat it by adding medications?
What about removing carbs? Though, investors would be really disappointed..