The younger you look, the longer you will probably live.

Danish scientists say appearance alone can predict survival, after studying 387 pairs of twins. All the twins were in their 70s, 80s or 90s when photographed.

Over a seven-year follow-up the researchers, led by Professor Kaare Christensen of the University of Southern Denmark, found that the bigger the difference in perceived age within a pair, the more likely it was that the older-looking twin died first. via BBC News