Her cause of death was a heart attack , brought about by years of poor health .
After outliving her husband and , possibly , her son , Xin Zhui died around 50 years of age in 163 BCE .
Xin Zhui 's cause of death was a heart attack , brought about by years of poor health .
After outliving her husband and , possibly , her son , Xin Zhui died around 50 years of age in 163 BCE .