The Centers for Disease Control and Prevention (CDC) has a new report out on food allergies. As everyone suspects, these have become more common in the last 10 years, especially among kids with asthma. But the increase is really quite small and much smaller than I suspected. The one big change is in the rate of hospitalizations; these have more than doubled. Why? What’s really depressing is that nobody really knows. I have argued for years that we need more research on food allergies. With a food supply as complicated as ours, having one is no joke.