As of today, around 1 in 5 American children have some sort of respiratory allergy (like Hay Fever), and around 1 in 10 have Asthma.
That’s somewhere between a 200% and 300% increase just during the end of the 20th century.
But it’s not happening everywhere…
Amish Kids Don’t Get Allergies
The following article is a fascinating dive into the allergy epidemic that’s been occurring for the past half-century.