Does lactose intolerance cause bad breath?

While lactose intolerance can lead to gastrointestinal symptoms such as bloating, gas, and diarrhea, it is not directly linked to bad breath. Bad breath, also known as halitosis, is commonly associated with poor oral hygiene, bacteria in the mouth, certain foods, or underlying health conditions. Lactose intolerance occurs when the body lacks the enzyme lactase, which is responsible for breaking down the lactose in milk and dairy products. This leads to digestive issues after consuming lactose-containing foods.