General information. Causes my anxiety.

Hello doctors , Please help me. I'm going through these phases of anxiety and fear very oftenly. The reason for my anxiety is that, now a days , every other day i hear young people below 40 years or even below 30 years are suffering cardiac arrest, heart attacks and i see it almost everyday in the news. This is become my cause of anxiety and trauma. I'm scared to do even normal workouts which I used to do daily. Please please please doctors with folded hands i request you to throw some light on this topic, is this because of some undiagnosed heart conditions, or it can happen to anyone even with completely healthy heart. What are the symptoms.. i kindly request you to please reply to this . As this is happening a lot these days and everytime I see or hear anything related to heart it causes my anxiety.