As experts in digestive health, we know that lactose intolerance is one of the most common food sensitivities worldwide. While essential for childhood bone development, lactose—the sugar in milk—becomes harder to digest as we age. This happens because our bodies produce less lactase, the enzyme that breaks down lactose for proper absorption. Without it, undigested lactose can cause uncomfortable symptoms like diarrhea, bloating, vomiting, and abdominal pain. Here's our comprehensive guide to understanding, diagnosing, and thriving with lactose intolerance.
Lactose is a disaccharide made of glucose and galactose. When lactase is insufficient, it passes undigested into the colon, where gut bacteria ferment it, producing gas and other byproducts. Common signs include bloating, abdominal pain, acidic diarrhea, and in severe cases, vomiting. To confirm, eliminate lactose-containing foods for 1-2 weeks—carefully checking labels—and monitor symptom relief. For definitive diagnosis, consult a healthcare professional for testing, such as a hydrogen breath test.
In France, lactose intolerance affects 6-10% of the population. While you can't regain full tolerance, working with a dietitian can help identify your personal threshold, allowing a balanced diet. Lactase enzyme supplements enable occasional dairy enjoyment, like at social events. Opt for plant-based milks (almond, oat, soy) in recipes for smoother digestion. Note that sheep's and goat's milk remain indigestible for most with this condition, due to similar lactose content.
