It's New Year's Eve and one's thoughts turn inevitably to ageing and all that goes with it. goes with it. According to physical anthropologists, one thing than goes with it is shrinking: one's height reduces after some point in the 20's due to compression of the spine. But I am not convinced that I am any shorter that in my heydey. So using the good old NCDS I plot height at 42 against height at 23 (controlling for sex). It's pretty much on the 45 degree line, the median change is precisely 0 in fact. I rest my case. Now I just need to rest.
Chandler P.J., R.D. Bock (1991) Age changes in adult stature: trend estimation from mixed longitudinal data Annals of Human biology 18(5) 443-440
Himes J.H., W.H. Mueller (1977) Aging and secular change in adult stature in rural