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Because our immune systems produce substances known as antibodies, allergy symptoms occur when the immune system mistakes a wholesome substance- like pollen or a nut- for an intruder, and in effect, wages a war against it through the release of antibodies

Xylenes and toluene from firsthand exposure were mainly associated with vitamins and cofactors, lipid regulation, and glycans, whereas in secondhand exposure they were only associated with sialic acid metabolism

Later, she says that when she entered university, everybody was smoking there, so her smoking habit intensified