Nothing to see here: 10% of all deaths in the US are due to medical errors in hospitals and clinics.
From John Hopkins website - 2016:
SHARE FAST FACTS *10 percent of all U.S. deaths are now due to medical error. *Third highest cause of death in the U.S. is medical error *Medical errors are an under-recognized cause of death
"Analyzing medical death rate data over an eight-year period, Johns Hopkins patient safety experts have calculated that more than 250,000 deaths per year are due to medical error in the U.S"
Good book to get: "Unaccountable: What Hospitals Won’t Tell You and How Transparency Can Revolutionize Health Care" by Marty Makary (Bloomsbury Press, 2012).
I don't doubt that, but there are some calling dementia type 3 diabetes... Being that dementia is a bucket diagnosis for symptoms of "losing one's mind", there's likely more than one cause.