Symptoms, Causes, and Effects
Until about 100 years ago an allergy was something out of the ordinary as formal infections were the most frequent causes of disease. Nowadays, allergies have been increasing uncontrollably and it is officially accepted that the contamination of our modern environment has created a climate favorable for the development of such illnesses.
What is an allergy?
When speaking of an allergy, we mean a changed or unusual defensive reaction against some known, or unknown, substance. An allergic disposition can be hereditary or acquired and we can get an allergy at any time in life, even as a bottle fed baby.
An allergic reaction to a substance or food can happen within seconds or over a period of up to 72 hours. Countless health problems or even serious illness can be caused by allergens.