According to current understanding of the human skin color polymorphism,light skin

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Current understanding of the human skin color polymorphism suggests that light skin may have developed only fairly recently, around 20,000 to 50,000 years ago, due to changes in diet and the need for increased vitamin D synthesis in areas with lower levels of sunlight. It is unlikely that light skin was the "original" human color, as humans are believed to have evolved in Africa where darker skin provides better protection from sunlight. Additionally, it is not accurate to say that light skin is the best adapted skin color, as skin color adaptation is dependent on various factors such as geography and cultural practices.

According to Current Understanding of the Human Skin Color Polymorphism,light