Are you suffering from spring allergies or does your child consistently suffer from sinus congestion and head colds? If so, you might want to limit dairy during these times. It has been shown that dairy consumption can increase mucus production in individuals that are sensitive to dairy. Extra mucus is produced due to inflammation in the sinus cavities, which does not allow your sinuses to drain properly. My son loves cheese, yogurt and milk and has no reaction to eating these foods. He clearly doesn’t have a sensitivity to dairy but when he gets a head old we completely eliminate any diary from his diet. I feel that by doing this, his congestion/cold cycle is shorter than normal. Next time you, or someone you know is suffering from congestion, try eliminating diary and see if this makes a difference for you.