2 resultsfor “impact of weather on hay fever”
weather and high concentrations of carbon dioxide let plants pump out more pollen, triggering allergic reactions in people with hay fever and leading to symptoms that range from [mildly irritating to life-threatening](https://www.theguardian.com
weather seen in the UK over the last two years means conditions have been ideal for birch tree pollen - a major hay fever trigger. Warm, dry days help spread pollen through the air, creating what