Although lactase, the enzyme required for the absorption of lactose, is found in the small intestine, people who have had a gastrectomy may still suffer from symptoms of lactose intolerance. This may be due to the rapid transit of food through the GI system. Symptoms of lactose intolerance include abdominal cramping or pain, bloating, gas, and diarrhea. If you experience symptoms of lactose intolerance, a trial of avoiding foods with lactose may be beneficial. Often people can tolerate small amounts of lactose when taken throughout the day. If you are lactose intolerant but wish to continue to use dairy products, Lactase enzymes are available and may be beneficial.
When one often experiences malabsorption symptoms, health professionals suggest a low-lactose diet. While some people may become lactose intolerant after a gastrectomy, it is essential to remember that everyone is different, and some people do not experience lactose intolerance. Do not assume that you will be automatically lactose intolerant after a gastrectomy. Dairy products are often an easy way to consume protein and vital nutrients during a time when eating healthy foods may be a challenge. Avoiding them unnecessarily may make it more difficult to eat a nutrient-dense diet. Remember some patients who are lactose intolerant can still tolerate small amounts of lactose such as yogurt or small amounts of cheese.