Anonymous wrote:Yes op, and a 40 year old would be considered a grandpa. So when you read / hear stories about “healthy grandpas” and “active grandmas” from 100-200 years ago, keep in mind often the demographic is 35-55 year olds

My grandmother is 94 and still lives alone. Going back generations through the 1700’s her family was 100% French. The woman lived between 90 and 100 years old and had a lot of kids. The men lived until their 70s or 80s. My father’s Irish side does not fair so well.
It’s genetics, lifestyle, diet. They were farmers and were always active, always moving. There are great-grandparents in my family who help out with the younger children.