One way to reduce the problems from consuming dairy products is to avoid them altogether. If a person does have trouble from dairy products, he should buy organic dairy products. Although some organic dairy products are expensive, they are thought to be healthier. Some side effects may occur from drinking cow's milk including ear infections, leukemia, multiple sclerosis, arthritis, dental decay and bronchitis. If one continues to have trouble with dairy products, he should consult a specialist.