The tallest men in the world are Dutch, while the tallest women come from Latvia.

    That finding comes from a new British study. It also found that East Timor is home to some of the shortest men on our planet, while the shortest women are in Guatemala.

    Scientists from Imperial College of London studied height measurements for young adults over the past century. The scientists found that between 1914 and 2014, people in some countries have grown taller while average height shrank in other areas.

    The study found that Dutch men now have an average height of more than 182 centimeters. Among Latvian women, the average height is 170 centimeters. Those numbers represent an increase for both countries since 1914.

    The question to ask is, why?

    Philip Wilkens is from Amsterdam, the largest city in The Netherlands. He thinks diet and exercise might explain, in part, why Dutch men are so tall.
    菲利普·威尔肯斯(Philip Wilkens)来自荷兰最大的城市阿姆斯特丹。他认为饮食和锻炼可能是荷兰男子都那么高大的部分原因。

    "Maybe they eat more potatoes? Maybe they eat more bread than other people? We are sportsmen so we do a lot of sports. Maybe that's why we grow a little faster."

    He might have a point. Scientists agree that sport has something to do with how tall a person is.

    Silvija Umbrasko is from Riga Stradins University in Latvia.
    Silvija Umbrasko来自于拉脱维亚的里加斯坦丁斯大学。

    She says that the height of women can be increased by playing sports and through exercises. She adds that sports such as basketball, volleyball and even handball help a young person grow "because of the stretching exercises that are used."

    Experts agree that physical activity is important for physical growth. Other studies have explored possible links between a lack of emotional attention and physical growth. But scientists also add that growth depends mostly on diet and environmental and genetic factors.

    Sanda is a tall woman from Latvia's capital, Riga.

    She says, "I'm so used to my height that I don't pay attention to it. However, I've heard that guys like tall girls; so it is a good thing."

    In 2014, the top 10 tallest nations for men and women were mainly in Europe. Many scientists believe that people in Europe have grown taller in recent years because of improved nutrition.

    However, the average height in many African and Middle Eastern nations has declined since 1914. In East Timor, the average man is 160 centimeters tall. Many people also are short in Yemen, Laos, Madagascar and a number of Asian and African countries.

    The British scientists say that the United States reached a plateau in growth about 20 years ago. In other words, the average of height of young adults has changed little during that period.

    But really, who cares? Is there a good reason for being tall?

    According to some earlier studies, the answer could be, yes.

    For example, one study explored the relationship between a person's height and their future earnings. American researchers led this investigation. They found that "taller workers receive a notable wage or earnings premium in developing economies." Their findings were reported in the Journal of Human Capital.

    I'm Anna Matteo.