Lactose
The sugar in dairy that many adults cannot digest due to declining lactase enzyme activity.
Lactose is the primary sugar in dairy products. Most humans produce high levels of lactase (the enzyme that digests lactose) in infancy, but many people's lactase production declines with age — a condition called lactase non-persistence. This is most common in people of Asian, African, and Hispanic descent. Undigested lactose ferments in the colon, causing bloating, gas, and diarrhea.
Educational content: This page is for general informational purposes only. Individual responses to foods vary widely. If you suspect a food allergy or sensitivity, consult a licensed dietitian, allergist, or physician before making dietary changes. Full disclaimer
Some content on this site is AI-assisted. While we strive for accuracy, information may not reflect the latest research. Always verify health information with a professional.
See how Lactose affects you personally.
Try Plateify Free →