An allergy is basically your immune response to substances (allergens) that your body considers as foreign and harmful. These allergens may include pollen grains, certain food, dust, or pet. Usually, an allergy is characterized by rashes, sneezing, itching, dizziness, etc. However, in severe conditions, a person may experience tightening of the airways, increased pulse, loss of consciousness, a swollen throat, etc. These symptoms can be life-threatening or can cause permanent damage to the body parts. There are certain food that doctors advise to eat and stay away from. To avoid the onset allergy, you should know about them. Watch this video and get an idea of what should be a part of your daily diet and what should never be consumed by you.