Why Pollen Causes Allergies
30% of the global population suffer from pollen allergies, making it the most common of all allergies. Pollen is produced by trees, flowers and grasses to fertilise other plants of the same species. These pollen particles have been honed by evolution to spread very easily, by the slightest of air currents. In people with pollen allergies, the body's immune system mistakenly identifies the harmless pollen particles as a dangerous intruder (like a viral microorganism). The immune system begins to produce chemicals to fight against the pollen, resulting in sneezing, a blocked nose or watery eyes and can make pre-existing respiratory conditions, like asthma, worse.