Estrogens classified as carcinogens. (Environment).Sex hormones of the class known as steroidal estrogens Estrogens Hormones produced by the ovaries, the female sex glands. Mentioned in: Acne, Polycystic Ovary Syndrome estrogens (es´trōjenz), n. , which are in hormone-replacement therapies and birth control pills, are among the latest compounds that a government panel of U.S. scientists has recognized as cancer agents in people. The National Institutes of Health in Bethesda, Md., periodically reviews cancer-research literature and updates its list of known or suspected human carcinogens Carcinogens Substances in the environment that cause cancer, presumably by inducing mutations, with prolonged exposure. Mentioned in: Colon Cancer, Rectal Cancer , which now number 228. Some steroidal estrogens had previously been listed as probable carcinogens, but on Dec. 11, 2002, the panel deemed all hormones in this class known carcinogens. The new report also upgraded the metal beryllium beryllium (bərĭl`ēəm) [from beryl ], metallic chemical element; symbol Be; at. no. 4; at. wt. 9.01218; m.p. about 1,278°C;; b.p. 2,970°C; (estimated); sp. gr. 1.85 at 20°C;; valence +2. and its compounds from probable to known carcinogens and added 15 previously unlisted chemicals and other risks, including wood dust and broad-spectrum ultraviolet light Ultraviolet light A portion of the light spectrum not visible to the eye. Two bands of the UV spectrum, UVA and UVB, are used to treat psoriasis and other skin diseases. , to one category or the other.--B.H. |
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