A few months ago, the origin of lactose tolerance in African populations revealed how a powerful selective advantage, such as the ability to digest milk after infancy, could cause genes to spread ...

This development of lactose tolerance took only about 20,000 years — the evolutionary equivalent of a hot minute — but it would have required extremely strong selective pressure. "Something ...

Independently, other mutations for lactose tolerance arose in Africa and the Middle East, though not in the Americas, Australia, or the Far East. In an evolutionary eye-blink, 80 percent of ...

Lactose tolerance offered these populations a crucial advantage, says anthropologist Henry Harpending, co-author of a recent book called The 10,000-Year Explosion: How Civilization Accelerated ...

Scientists have brought to light the spread of dairy farming in Europe and the development of milk tolerance in adult ... represented a way of reducing the lactose content of fresh milk to ...

Until now, it was widely assumed that lactose tolerance emerged because it allowed ... especially those of animal origin. Under these conditions consuming milk would have resulted in increasing ...

Lactose tolerance tests were performed in the morning ... 13–15 The results of this study provide further evidence for a genetic origin of the isolated lactase deficiency found in healthy ...

Patients in the United States spend $13 billion a year on osteoporosis treatments. A big problem with both calcium intake and lactose tolerance, nutritionists say, is that most people, especially teen ...

Studies on the global prevalence of this mutation suggest that 65% of humanity is lactose-intolerant ... especially those of animal origin. Consuming milk under these conditions would have ...