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A Breakthrough in the Mystery of Why Women Get So Many Autoimmune Diseases

Olga Khazan
A Breakthrough in the Mystery of Why Women Get So Many Autoimmune Diseases

The rodentlike thing would become the common ancestor of the world’s placental mammals, with descendants that include whales, bats, dogs, and humans, among many other species. In the United States alone, women represent 80 percent of all cases of autoimmune disease. Women are 16 times more likely than men to get Sjogren’s syndrome, in which the immune system goes after the glands that make tears and saliva, and nine times more likely to have Hashimoto’s thyroiditis, in which it sets it sights on the thyroid.