Still, people are little confused about symptoms of the allergy, especially when it is about allergy on cats. The majority of the people are thinking that cat allergy is caused with the allergens from the cat dander. But, the most of the allergens are come mainly from seat and saliva. These allergens contain a carbohydrate structure which is also known as Fel d 1. Usually people are thinking that this is reaction of intolerance on gluten, but it doesn't mean that it is the main reason of your body reaction. Different mechanisms and different organisms have also and different adverse reactions. It is because of the similar symptoms of gluten allergy and adverse reactions. Still, one of the main reasons for developing of the number of allergic symptoms is the home air. With the researching which done US Environmental Protection Agency in 1990, air pollution indoor ranked as "high priority health risk". Products such as air filters or air purifiers are very good, because they are reducing allergens which may cause symptoms of asthma. Knowledge that you are allergic on the latex may save you from unwanted situation that latex allergy may produce. Skin test is procedure where small amount of the latex components are injecting into your skin. So, if your skin show some symptoms of the latex allergy, such as swelling in the area where you have injected latex components, you will know that you are allergic on latex. At last, depending of factors, allergies may also be caused by medications. Reasons Why People Are Getting Allergies The most important for healthy of all people is immune system. Immune system is actually, your bio-weapon which protects your body from all diseases that are attacking your body. This mechanism may identify foreign invaders and in same time also destroy them. Still, no matter of the small size of mold spores, they may be very dangerous for the people who are allergic on them or even deadly. Airborne allergens are the most causes of the allergies. It's not only that mold spores may be found on the walls and surfaces, but also they may spread in the air. People who are allergic on the mold may much easier breath mold spores, than people who are not allergic on the same.