Hand sanitizer and anti-bacterial soaps are fine to use and even better to keep handy when you’re sick. But, using them too much early on in life can result in allergies. That’s according to a recent study which finds that the immune system needs to be exposed to irritants and bacteria so it can learn how to fight against them. "Allergy is the immune response to one’s environment. If the environment is sterile, meaning nothing stimulates it, it leads one to be open to other immune responses, like allergies," said said Dr. Leonard Bielory, Professor at Rutgers University and attending at Robert Wood Johnson University Hospital.
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