Calculus, Logic, Music and the Human Brain

[downbeatplumb]

You are so very wrong. Lactose tolerance has only evolved as recently as within the last 3000 year.

Lactose intolerance is a corruption of the original design that results in a reduction of genetic information, it is a hardship for the majority of people who have it and cannot be said to be “evolution in action.”

Lactose intolerance is in fact the default and lactose tolerance is the recent mutation. as such it is a good example of evolution in action.

Scientists have looked into the human genome to find the precise genetic mutation that causes lactose tolerance. Lactose tolerance in humans always come from the same genetic mutation, regardless of whether they are of European, Asian, and African descent.

Most people in the world are lactose intolerant. People do not naturally have the ability to digest milk beyond infancy. The sugar, lactose, that is present in high levels in milk causes nausea and bloating in most adults. Europeans and Americans are much more likely to have the genetic mutation that allow them to digest lactose. Lactose intolerance is present in only 5% of Northern Europeans but nearly 100% of Southeast Asians.