Data from dozens of countries reveals height and weight differences between sexes have increased since 1900

Amid the profound changes humanity has witnessed, one might be forgiven for failing to notice a rise in sexy and formidable men: those tall, broad-shouldered types that are strangers to self-doubt.

But according to a new study, men around the world have gained height and weight twice as fast as women over the past century, driving greater differences between the sexes.