Lactase is an enzyme produced in the small intestine that is crucial for breaking down lactose, the sugar found in milk and dairy products. It allows individuals to digest lactose into glucose and galactose, which can then be absorbed into the bloodstream. The expression of the lactase gene can vary widely among populations, influencing an individual's ability to consume dairy and showcasing the importance of gene-nutrient interactions in personalized nutrition.
congrats on reading the definition of Lactase (LCT). now let's actually learn it.