First of all, whites have the least accumulation of melanin among all races, because they adapt to different dietary structures. After primitive modern European Homo sapiens domesticated various wheat plants nearly ten thousand years ago, wheat became an important food source.

Wheat plants are rich in folic acid, so there is no need to worry about the decomposition of folic acid in the body under the irradiation of ultraviolet rays from the sun, resulting in the lack of this organic matter which is important for reproduction and cell division.

So relatively speaking, to say where people have the lightest hair color, it must be white people in northern Europe, including Norway, Sweden, Finland, Denmark and other countries. These Nordic people have a high proportion of blond hair and fair skin. Also known as Scandinavians, or Vikings.

Extended data:

Caucasian, also known as European race and Caucasian race, refers to a race with specific physical characteristics and is a concept of physical anthropology. White is the largest and most widely distributed race in the world, accounting for about 22% of the world population.

Mainly distributed in Europe, North Africa, West Asia, Central Asia, South Asia, North America, South America and Oceania. The native place of white people is Europe, North Africa, West Asia, Central Asia and South Asia. White people in America and Oceania are mainly of European descent.

With the increase of white people's age, the melanin in iris and hair will gradually increase, so the color of iris and hair of most white people in adulthood will be darker than that in childhood. Occasionally, "blond" whites in adulthood are only found in European whites whose ancestors are not Mediterranean.

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