Men with hair loss are seen as less attractive and shorter, and height is a key factor in attractiveness ratings.
Attractive women slightly worsened mood, green backgrounds improved mood, and older people had better moods.
Wearing a toupee makes men seem more attractive and slightly healthier, but doesn't change how confident they appear.
Toxoplasma gondii infection may increase testosterone levels in males.
138 citations,
October 2012 in “Behavioral Ecology” Masculine facial features may not reliably indicate heritable health, and more research is needed.