Here is further information regarding Neanderthals and how we may be able to determine the epigenetics which enables identical genes to create different physical features. They suggest that Alzheimers was new to homo sapiens. I have a theory that Alzheimers was a positive genetic development that caused elderly tribespeople to wander away when hungry, thus leaving more food for their children and grandchildren. I can imagine a tribesperson going out into a cold night to pee and then wandering off to look for food and freezing to death. My late husband’s greatest wandering took place when he was hungry, and while he still had strength and was not yet incontinent. I always had to urge him to keep me company in the kitchen, and feed him little nibbles while I rushed to get the meal on the table.
