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Shocking events can lead to abrupt very high stress hormones levels which can stun the heart and lead to heart failure, angina, and/or rhythm disturbances that act like a heart attack. In this "broken heart syndrome" there is no underlying heart damage. If people survive this their heart returns to normal.        

  According to a presentation at the Heart Rhythm Society in May of 2013, higher levels of estrogen are associated with an increased risk for sudden cardiac death (SCD) in both men and women. Testosterone on the other hand was lower in men and slightly higher in women with SCD. More than 350,000 people die annually in the US from SCD. Some of the...