Some individuals may experience an allergic reaction to a specific type of food. Symptoms are generally mild. For others, however, reactions can be extreme and sometimes life threatening. Blueberries contain salicylates, which are natural-occurring chemicals in plants.

Dairy allergy symptoms in adults are less common than in children, but they have a tendency to be more persistent. Skin, respiratory and gastrointestinal symptoms may occur separately or they may overlap. In the most severe cases of dairy allergy, anaphylaxis is a life-threatening symptom.

Sulfites are used in the food industry to prevent oxidation and spoilage of food, preserve flavor, control bacterial growth and bleach food starches. Sulfites are metabolized by the enzyme sulfite oxidase.

Temporomandibular joint and muscle disorders involve the chewing muscles and joints connecting the lower jaw to the skull. Although TMJ is technically the abbreviation for the joint, people commonly use this term as shorthand for the disorders and symptoms, says MedlinePlus.

Gastritis, an inflammation or swelling of the stomach lining, can be a painful condition that is often caused by infection, drugs, stress or an autoimmune response. Treatment of gastritis is focused on treating the underlying cause and eliminating the irritant or offending substance.

Gluten is a complex protein found in wheat, rye and barley. Gluten intolerance is a broad term that refers to different degrees of gluten sensitivity. Celiac disease is an autoimmune condition characterized by severe gluten intolerance.

Lactose intolerance is a common digestive problem that can result in a variety of uncomfortable, although short-lasting effects. However, these symptoms occur entirely in your digestive system. If you experience symptoms anywhere else in your body after drinking milk, you may have a milk allergy.

People often cut sugar out of their diet when trying to lose weight, control diabetes or simply improve the quality of their food and beverage choices. Regardless of the reason, giving up sugar can be challenging. Also, the omission of sugar or other related diet changes may even be linked to headaches.

For those who experience environmental and other sensitivities as well as folks who elect to eat as healthfully as possible, consuming certain foods purported to be higher in vibration is a choice that many people are making. But how does one know which foods fall into the high vibrational category?

Corn is an inexpensive and versatile ingredient that is used to prepare a wide range of foods. According to FoodReference.com, more than 200 varieties of corn exist and all are good sources of vitamins A.

Ginger is widely used for culinary and medicinal purposes. Often referred to as ginger root, or simply ginger, the underground stem -- or rhizome -- is used raw or as a dried powder. Ginger is an ingredient in a variety of foods and drinks such as gingerbread, ginger ale and ginger tea.

An allergy to baker’s yeast is fairly rare, but sometimes it goes undiagnosed for many years or is misdiagnosed as an intolerance or allergy to gluten. Baker’s yeast allergies are rarely confined to the few species used to cause bread to rise.