An allergy is an exaggerated immune response or reaction to substances that are generally not harmful. Allergies occur when your immune system reacts to a foreign substance such as pollen, bee venom or pet dander.
There are a broad range of evidence-based natural allergy remedies available today. Pat Robinson, of Heal Thyself, has done a great job of summarizing a few of the many studies found on GreenMedInfo.com on the topic.
NBC and other media outlets have recently reported findings from a study released this summer in the Journal of Allergy and Clinical Immunology. The media reports that hand-sanitizers and being "too clean" can actually produce unintended effects, including greater incidence of allergies and asthma among children.