If A Person Have Strong Family History & The Person

If a person have strong family history & the person is taking care himself by brisk walking, pranayama etc & no symptoms but his TMT's last 8-10 years are positive with ST changes still doctor is not suggesting to go for angio. Also he had once or twice swetting during brisk walking in last 5-6 years but no other symptoms so far & the exercise continues. What is your opinion ?