The thyroid gland is a butterfly-shaped organ located in the base of your neck. It releases hormones that control metabolism—the way your body uses energy. The thyroid’s hormones regulate vital body functions, including:

  • Breathing
  • Heart rate
  • Central and peripheral nervous systems
  • Mood changes
  • Digestion
  • Body weight
  • Muscle and bone strength
  • Menstrual cycles
  • Fertility
  • Sexual power
  • Body temperature
  • Cholesterol levels

In short we can say that thyroid is a master organ which controls almost all body functions.