Allergies could be light or heavy.
In light cases, it would only cause rashes, and in serious cases, it might even lead to death.
There were many types of allergies on earth, and there were countless of them.
He was allergic to metals, pollen, mango, and dust mites.
There were even people who were allergic to rubber. It was tough for such people.
The American Medical Journal listed four of the most dangerous sources of allergies, including alcohol, shellfish, and peanuts.
But in general, allergies were also divided into different species and regional ones.
For example, people who lived near the sea were not allergic to seafood.
However, in the Inland countries far away from the sea, people who didn't eat seafood were more likely to be allergic to it.
Easterners were easily allergic to pollen and dust mites.
The probability of Westerners being allergic to peanuts was far higher than that of Easterners.
