So I came to a conclusion that people in there early 20s experience a heart problem more from genetics (heart arrhythmia, heart failure etc) far more likely than it being due to CAD (clogged arteries, blockage in viens) . I just wonder how uncommon it is to have / suffer from cad at a young age ? Is it impossible to be 20-25 with cad? Just WONDERING :/ any input ??