Hi I am just wondering if anyone knows if there is a link between Asthma and Underactive Thyroid? I am not confident that I am adequately medicated for the Thyroid problem but GP won't acknowledge this! I am also struggling to get my recently controlled Asthma under control now. I am wondering if having a Thyroid problem could make us more sensitive to allergens! Are there many people here that have have both conditions. If so I would love to hear from you. Thank you for taking the time to read.