
It’s not as common, some people with lactose intolerance have also reported headaches, feeling tired, trouble focusing, muscle and joint pain, mouth ulcers, problems with urination, and even eczema.
Dairy products such as milk, cheese, and yogurt are often linked to the development of canker sores. Some experts believe that proteins found in cow’s milk may trigger mouth ulcers in certain individuals. These flare-ups could result from an adverse immune reaction to cow’s milk.
If you frequently experience mouth sores, consider eliminating dairy products, especially those made from animal milk, from your diet. Instead, try alternatives like soy milk, oat milk, and vegan cheese to see if these changes help reduce the occurrence of canker sores.