I just don’t get why our bodies would reject nourishment or have a bad “reaction” to something as simple as grass.
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It’s not intentional. Allergies are our bodies misidentifying harmless things (like pollen) as harmful and incorrectly firing up our immune systems to attack them as if they were dangerous. Allergies are a bug, not a feature.
There are many competing hypotheses as to why allergies exist. Some are genetic – just mistakes in our base code – and others are thought to be caused by immune systems not having enough actual diseases to fight off, so they don’t learn the difference between “good” and “bad”.
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