HomeMedicine & HealthDiseases & Conditions (continued)What is Lactose Intolerance?
Medicine & Health·1 min·Updated Mar 15, 2026

What is Lactose Intolerance?

Lactose Intolerance

Quick Answer

This condition occurs when the body cannot properly digest lactose, a sugar found in milk and dairy products. It leads to symptoms like bloating, diarrhea, and stomach cramps after consuming lactose-containing foods.

Overview

Lactose intolerance is a common digestive issue where the body lacks enough lactase, the enzyme needed to break down lactose. When lactose is not digested, it can lead to uncomfortable symptoms such as gas, bloating, and diarrhea. Many people with lactose intolerance can still consume small amounts of dairy without problems, but larger quantities can trigger symptoms. The condition affects people differently; some may experience mild discomfort while others face severe reactions. For example, a person who enjoys ice cream might find that they can eat a small scoop without issue, but a larger serving could cause significant stomach pain. Understanding how lactose intolerance works is important for managing symptoms and maintaining a balanced diet. Lactose intolerance is significant because it can affect a person's nutrition and quality of life. Many individuals may avoid dairy altogether, which can lead to deficiencies in calcium and other nutrients. Recognizing and addressing lactose intolerance allows people to make informed dietary choices and seek alternatives that suit their needs.


Frequently Asked Questions

Common symptoms include bloating, diarrhea, gas, and stomach cramps after consuming dairy products. These symptoms can vary in severity depending on the amount of lactose consumed.
Diagnosis often involves a review of symptoms and dietary habits, along with tests like the hydrogen breath test or lactose tolerance test. These tests help determine how well the body digests lactose.
While there is no cure for lactose intolerance, it can be managed by reducing or eliminating lactose from the diet. Lactase supplements are also available to help some individuals enjoy dairy without discomfort.