Study finds world's tallest are Dutch and Latvians

South Korean women and Iranian men are significantly taller than they were 100 years ago but US people have barely grown, according to a new study on Tuesday that reflects nutritional and environmental factors.

Researchers at Imperial College London used data from around the world to track the height of young adults between 1914 and 2014 in more than 200 countries and territories.

Where once Scandinavia and the United States produced the tallest men, the Netherlands, Belgium, Estonia and Latvia now top the rankings, with Dutch men measuring an average height of 182.5 cm.