L actose intolerance is the inability to digest the sugar lactose, which is found in milk products. Milk products are important in any diet, because they contain minerals such as calcium, and vitamins such as A, C and folic acid. People with lactose intolerance lack the specific enzyme which digests lactose. It may combine with some medications to cause adverse side effects, and alcohol on its own may trigger diarrhea and indigestion. Alcohol may also promote the loss of important nutrients, such as folic acid and calcium.
Alcohol is less likely to be a problem if it is taken with meals.
The health-care team can advise if alcohol poses any problems in specific circumstances. T he caffeine found in coffee, tea, chocolate and soft drinks may irritate the digestive tract. It seems to be less a problem when part of a larger meal. Dietary Supplements Vitamin and mineral supplements are no substitute for the energy generated by real food. However, a person with IBD may be advised by their doctor to take vitamin supplements and other nutritional products.