I've seen a few 40-50 year old CRers who actually look 10+ years younger than their real age. I wouldn't expect people who started CR at 20-30 for and maintain it for 10-20 years, and then to look older than others their age. It's just not what I've seen. I don't see how this study has anything to do with CR. CR has consistently been shown to slow down aging appearance in dogs, monkeys, rats, mice... which show fewer wrinkles, less grey hairs at advanced ages...
See this here
http://www.facebook....6...153&l=0efc8
From my own anecdotal experience, I would have to disagree with you. As people age, the sub dermal fat pockets in the face tend to disappear. This is well known to the plastic surgery business who provide millions of dollars annually worth of fillers to aging baby boomers (Just look at Madonna for an example of fillers). Being a life-long athlete, I have known quite a few runners who maintain a low body mass well into their 50s and 60s -- and they all look much older in the face. Regarding CR specifically, I recently watched an American made documentary that covered the various "remedies" for aging. They focused on a British man named Daniel (? I think that was his name) and while he was thin, his face didn't have youthful fullness that is associated with youth. This makes sense to me: if you are intentionally starving yourself (and that is really the methodology behind CR) or running at a caloric deficit, why wouldn't you expect the body to utilize all of its fat deposits over a long enough time line?
However, as the author indicates, there is more to calculating aesthetic age than simply an individuals face. Everything from body weight / condition, clothing, demeanor, etc has a role to play.
"Guyuron doesn't recommend that people gain weight just to look younger, and one limitation of his study is that the Twinsburg photos included only faces. If they had shown the whole body, the judges may have knocked a couple of years off the age estimates of those who had kept a youthful figure - and added a couple of years for those who were well fed in the middle."
It may be that since people undergoing CR have a low body mass and thinness is often associated with youth, that despite some increased loss of facial adipose tissue, they still have a net gain in youthful appearance. Anyways, its not my intent to bash CR as it is very promising, I simply think it is not a magic bullet for all aspects of aging.