hi there My mum died of a heart attack aged
I would explain as follows:
Welcome and thank you for asking on Ask a Doctor service!
Regarding your concern, I would explain that you and the other family members could be at an increased cardiovascular risk.
But both your parents had two other risk factors like dyslipidemia and arterial hypertension.
Smoking, dyslipidemia and arterial hypertension are independent cardio- vascular risk factors.
I recommend following a healthy lifestyle and periodically checking your blood lipid profile and blood pressure values.
Hope you will find this answer helpful!