Scientists discover your body may be remembering allergens — and making your hay fever worse

• A new study by Mass General Brigham researchers shows that sensory nerve cells remember past allergen exposures, causing stronger allergic reactions over time.
• The nerve cells recognize shared features among different allergens, which may explain why developing sensitivity to one trigger can increase susceptibility to others.
• Scientists found that allergic memory in nerve cells fades over time and are now exploring ways to deliberately reset it to prevent allergy development.
• The breakthrough comes as human-caused climate change worsens seasonal allergies by extending pollen seasons and delaying autumn freezes across the United States.
• Around 80 million Americans suffer from seasonal allergies, which wet conditions driven by the El Niño climate pattern are further exacerbating this fall.

IN FULL

Scientists might finally have an answer on the origins of your seasonal allergies