I have a Pacemaker that has been controlling my heart. for 11 years. Does anyone know if Bradychardia or SSS can be a family problem. My father's sister died young, in Ireland, and two of my female cousins died of heart failure, one in her 40's one in her 50's. both in England. To my knowledge none of them were known to have heart disease. They each felt tired lay down in the early morning and died quietly and alone. Is ttheir something I should suggest to my other female relatives about having their hearts checked?