What should happen to blood glucose levels after drinking milk in someone who is lactase persistent

When a person who is lactase persistent drinks milk, the lactase enzyme in their body breaks down lactose, the sugar found in milk, into two simpler sugars: glucose and galactose.

These simpler sugars, including glucose, are then absorbed into the bloodstream through the small intestine.

As glucose enters the bloodstream, blood glucose levels rise. This triggers the pancreas to release insulin.

Insulin is a hormone that helps cells throughout the body absorb glucose and use it for energy. As cells absorb glucose, blood glucose levels should start to fall back to normal.

Therefore, in someone who is lactase persistent, drinking milk should initially cause a rise in blood glucose levels, followed by a fall as the glucose is used for energy.

However, the exact response can vary depending on several factors, including the amount of milk consumed, the individual's overall diet and health, and their physical activity level.