Some women with menstrual cycle disorders like asthma and migraine headaches may be experiencing allergies to their own estrogen and progesterone hormones, Texas researchers have discovered. Russell Roby, M.D., director of the Roby Institute, Dr. Dick Richardson, professor at The University of Texas at Austin, and Dr. Aristo Vojdani, of Immunosciences Lab, Inc. in California, found that female patients who experienced health changes during their menstrual cycle had higher levels of IgE antibodies against progesterone and estrogen than control subjects. An increase in IgE antibodies is typically associated with allergic response.