Average monthly weather in Calcutta, India. Kolkata has a Tropical wet-and-dry climate. (80 Â°Fahrenheit). Summers are hot and humid with temperatures in the low 30's and during dry spells the maximum temperatures often exceed 40 Â°C (104 Â°F) during May and June.
Food allergy is an immune system reaction that occurs soon after eating a certain food. Even a tiny amount of the allergy-causing food can trigger signs and symptoms such as digestive problems, hives or swollen airways.n some people, a food allergy can cause severe symptoms or even a life-threatening reaction known as anaphylaxis. Food allergy affects an estimated 6 to 8 percent of children under age 3 and up to 3 percent of adults.
Learn more about the most common allergy trigger foods. Allergic reactions to foods are very common and often very dangerous too. Other allergies are triggered by microscopic protein particles that are inhaled or come into contact with the skin.But food allergies usually involve proteins that have been ingested (swallowed).ut in reality the great majority of food allergies are caused by just a handful of foods. Among children, the foods most commonly linked to food allergy are: 1  milk. 2  eggs. 3  wheat. 4  fish. 5  soy. 6  peanuts.