Actually, I have been questioning this. I have Hashimoto's, my daughter has Hashimoto's and my sister has Hashimoto's -- and we have all had breast cancer!!!! My sister has Shogrens, my daughter has asthma and allergies, and I have allergies. Also, my aunt died of breast cancer and she had eczema and psoriasis. Seems to me somehow there has to be a link here.