I bet you weren’t expecting this to end up on our list? Well surprise surprise! Let’s get it out of the way first. Eggs are a terrific source of protein, iron and Vitamins. But at the same time, these benefits won’t matter if you’re allergic. Did you know eggs are among the most common allergies among infants and young kids? If you’re allergic to eggs and unaware of it, you could be heading into scary territory. Putting aside the potential hives, asthma and nasal congestion, your digestive tract alone may be too much to handle. Eggs can cause your digestive system to break into an allergic reaction. This means your intestines can become inflamed and cause constipation. From here, you won’t be able to make proper bowel movements. But it’s not just that, your stomach will also have a thing or two to say. An egg allergy can lead to nausea and vomiting. If you don’t get sick, the cramps will be enough to have you tap out.