Will Cole

Some of this variability has to do with genetics (the unique set of variations in your DNA) and epigenetics (how your lifestyle and environment influence the expression of your genes). Some of it has to do with the balance and diversity of your gut bacteria, the regulation of your immune system, the fluctuations in your hormones, and your level of inflammation at any given moment. In fact, what causes inflammation in you may be completely different from what causes inflammation in someone else, and how inflammation affects your health and functioning is also unique.

Food allergies: These involve the immune system and have the most immediate and potentially severe response. Symptoms of an al

Food intolerances: Unlike allergies, these do not directly involve the immune system. Instead, intolerances occur when your body is unable to digest certain foods (such as dairy) or when your digestive system becomes irritated by them. These are usually the result of enzyme deficiencies.
Food sensitivities: These are immune-mediated, like allergies, but food sensitivities can result in a more delayed reaction. You might be able to digest a small amount of the food without issues, but overdoing it or eating that food every day could gradually increase your inflammation to the point that your health begins to suffer.