Lactose intolerance affects millions of people, and many may not even know they have it. In this article, we’ll explore 8 common signs your body might be showing if lactose intolerance is the cause of your discomfort.
Mouth ulcers
Though less common, some people with lactose intolerance report symptoms like headaches, fatigue, joint pain, and even mouth ulcers. Experts believe that proteins in cow’s milk can trigger these sores in some individuals. If you often experience mouth ulcers, try cutting out dairy products like milk, cheese, and yogurt to see if it helps. Consider alternatives like oat milk or soy milk to avoid potential triggers.
Swelling
For some, dairy allergies can cause reactions in other parts of the body. Symptoms may include rashes, hives, or swelling around the face and lips. In severe cases, an allergic reaction can lead to anaphylaxis, causing throat swelling and breathing difficulties. Immediate medical care and epinephrine are crucial in such situations.
Diarrhea or constipation
Lactose intolerance often causes diarrhea after consuming dairy. However, in some cases, it can result in constipation instead. This happens when gut bacteria produce methane, which slows down digestion. Both conditions can cause discomfort and disrupt daily life.
Bloating
Bloating is a very common symptom of lactose intolerance. It occurs because the body lacks enough lactase, the enzyme that breaks down lactose. Undigested lactose moves to the colon, where it is fermented by bacteria, leading to gas buildup.
Headaches and fatigue
Some people with lactose intolerance also report symptoms beyond digestion, like headaches, tiredness, or difficulty concentrating. These signs might be linked to the body’s response to lactose, which can sometimes trigger inflammation or metabolic stress.
Flatulence
When lactose isn’t digested in the small intestine, it’s fermented by gut bacteria in the colon. This process creates gases like hydrogen and methane, causing flatulence.
Muscle and joint pain
In some cases, lactose intolerance can lead to inflammation, which may cause muscle or joint pain. This might be due to the gut’s reaction to lactose or the metabolic effects of dairy products.
Abdominal pain and cramps
The most common sign of lactose intolerance is abdominal pain or cramping, which often occurs within a few hours of eating dairy. Recognizing this pattern can help identify lactose as the problem.
If you notice these symptoms, consider reducing dairy in your diet and consulting a doctor for advice.