Cleanliness May Not Be Next to Godliness When it Comes to Allergies, Asthma
In the U.S., 40-50 million people suffer from allergies, and more than 17
million have asthma, a disease that claims more than 5,000 lives each
One hypothesis suggests that modern hygiene, vaccines, and sanitation
decrease children's exposure to certain microbes, preventing their immune
systems from building up natural defenses.
A new study adds further evidence to this hypothesis, showing that people
who do not have antibodies to bacteria, viruses, and parasites transmitted via
food, saliva, or feces are more likely to have allergies or asthma.