What Is the Physiological Mechanism of Lactose Intolerance?  Why Is the Ability

question 7

Essay

What is the physiological mechanism of lactose intolerance?  Why is the ability to digest milk sugars an example of biocultural evolution?

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Definitions:

Optical Tomography

A imaging technique using light to non-invasively produce images of the body, particularly images of the internal structures.

fNIRS

Functional Near-Infrared Spectroscopy, a non-invasive imaging technique used to measure brain activity by detecting changes in blood flow.

Brain Metabolites

Substances produced during metabolism, which occur and can be measured in the brain, providing insights into brain function and health.

Concussion

Damage to the brain caused by a blow to the head.