How does human body keep track of its age?
It doesn't always. Some people have an undistorted slown down aging. Jyoti Amge is over 18 and looks like an undistorted little girl. Yesterday, I saw a TV show that showed a 22 year old who looked like an undistorted 8 year old girl. There are also people who have distorted aging. People with progeria look like a distorted older person. I think nodoby has an undistorted sped up aging. Gabby Williams looked like a distorted toddler when she was 12. Nicky freeman from https://thewest.com.au/news/australia/forty-year-old-trapped-in-childs-body-ng-ya-220462 has a distorted bone structure of a ten year old boy and is all wrinkly. The girl in the YouTube video at https://www.youtube.com/watch?v=xoBetcKAxII&amp;t=96s has the undistorted bond structure of a 13 year old girl and is all wrinkly.