It seems to me that we will never find real evidence of those times. My grandmother is very old. She is 96 years old. I love listening to her stories about past times, because this is the only reliable thing I can find out. She begins to age not only in body but also in mind, but this is not so noticeable as her elderly housemates. I always give her CBD oil - https://www.shoppingcbd.com/brand-reviews/marys-nutritionals/  I read that it affects the elderly nervous system well and I see that it actually works. I will be sorry when she leaves me.