Capgras delusion has been reported as occurring in association with diabetes and hypothyroidism. Capgras delusion is a disorder in which a person holds a delusion that a friend, spouse, parent, or other close family member (or pet) has been replaced by an identical-looking impostor.  Knowing that +60% of the population in the US is obese and most have type 2 diabetes, how many do you think are struck by this? https://en.wikipedia.org/wiki/Capgras_delusion