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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

• Overweight men women sometimes take thyroxine to burn up excess fat and make their figures slimmer and more attractive.
• In turn, thyroxine regulates many body functions, including heat production, brain development, sexual maturity, and the growth of hair, skin and bones.
• For a time he lacked adequate thyroxine, the thyroid's hormone.

• thyroxin
• tetraiodothyronine
• T