Allergies occur when the immune system reacts strongly to a substance that is usually harmless, such as pollen, pet dander, dust, mold, or certain foods. Your body sees that trigger as a threat, releasing chemicals like histamine which cause allergy symptoms.
For some people, this shows up only in certain seasons. Others notice that symptoms linger all year long or flare with specific foods, environments, or hormonal shifts. At Optimal Longevity MD, allergies are viewed in the context of your full health story, including sleep, stress, digestion, and past infections.