Medical experts have raised concerns over the early onset of allergy season and its worse outcomes following a recent study which predicts a longer period of spring pollen emissions. The latest study, published in the journal Nature Communications, predicts that by the year 2100, the start of spring pollen emissions will begin up to 40 days earlier, and emissions from weeds and grasses in the fall will last up to 15 days longer. Clinical practitioners have advised COPD and asthma patients to take precautions as the pollination of flowers and trees will create increased allergens in the atmosphere. Researchers have also pointed out that 10-15 percent of the general population has severe seasonal allergies, many of which are triggered by pollen, mold or dust mite, which can potentially cause stuffy or runny nose, sneezing, dry and itchy eyes, itchy ears, cough and itchiness in the throat.