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• n  hormone produced by the thyroid glands to regulate metabolism by controlling the rate of oxidation in cells
  thyroxine is 65% iodine

• In turn, thyroxine regulates many body functions, including heat production, brain development, sexual maturity, and the growth of hair, skin and bones.
• Its secretions, containing thyroxin, are produced during normal sexual intercourse in such abundance as almost to constitute an eruption.
• Overweight men women sometimes take thyroxine to burn up excess fat and make their figures slimmer and more attractive.

• thyroxine
• tetraiodothyronine
• T