What is the Female Athlete Triad?

The female athlete triad (TRIAD) is a condition that affects female athletes. It includes the following 3 characteristics:

  • Low energy availability caused by not balancing calories burned during exercise with calories consumed
  • Amenorrhea (loss of menstrual periods or delay of first menstrual period) caused by low energy availability
  • Low bone density or osteoporosis (a decrease in bone density that causes weak, brittle bones that break easily)

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Rev. 12/2018. MassGeneral Hospital for Children and Massachusetts General Hospital do not endorse any of the brands listed on this webpage. This webpage is intended to provide health information so that you can be better informed. It is not a substitute for medical advice and should not be used to treatment of any medical conditions.