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Hay fever is an allergic reaction to pollen. During an allergic reaction, the immune system releases a chemical called histamine. Histamine works...
Normal fluctuations in your hormones don’t cause allergies. But oestrogen and progesterone can affect histamine levels: oestrogen can enhance...
Progesterone is a vital hormone for supporting an unborn baby in the womb. It’s at its highest while you're pregnant and rises as pregnancy goes on...