Health concerns and additives
Despite the many benefits associated with additives, some people have adverse reactions to these substances. Typically, these reactions are due to sensitivities. Symptoms often mimic the effects of an allergic reaction. To date, the only actual allergy that has been confirmed is to sulfites (added to dried fruits, beer, wine, fermented foods).
Other health concerns related to additives have largely been disproved over the years. Previously, some speculated that additives might cause hyperactivity or learning disabilities in children. However, this hypothesis has been disproved. In addition, the FDA has strict rules that prohibit the use of any additive that has even the slightest risk of causing cancer.