The results reveal that guys are drawn to feminine looks – large eyes, pillow lips and a soft jaw — to a greater extent in countries that are the healthiest.

The reason for this difference isn’t clear, but scientists suspect that evolution may drive these attractions, at least subconsciously. Men in harsh conditions may have a better chance of fathering children who survive if they mate with a woman who can hold on to resources, said study researcher Urszula Marcinkowska, a doctoral candidate at the University of Turku in Finland.

“It might pay off for men in hard conditions to develop a preference for women who are not very highly feminine, because feminine women are perceived to be less socially dominant,” Marcinkowska told Live Science. They’re also perceived to have less potential at acquiring resources, she said.