Yes, brazilnuts are quite beneficial for pregnant women. These nuts are known to have high amounts of selenium. According to the U.S. Department of Agriculture, one ounce of brazilnuts has 544 mcg of selenium. Selenium is a mineral which is involved in the regulation of immune and thyroid function. It helps in reducing the TPO antibody levels that are responsible for causing hypothyroidism in pregnant women.
Hence, brazilnuts are a good snacking option during pregnancy.