A Coronary artery disease, Congestive heart failure, Cardiomyopathy - including viral, toxic and alcoholic types, Pericarditis, Bacterial endocarditis, Valvular disorder - many, many types, Arrhythmia - many, many types, Congenital heart anomalies, Myocardial infarction, Arteriosclerosis, Infectious diseases, such as rheumatic fever (leading to rheumatic heart disease), and many, many more there are literally hundreds if not thousands of diseases that affect the heart. But here a few rare and not so rare ones. Arrhythmias, tetralogy of fallot, Wolff-parkinson white syndrome, takitsubo syndrome, all the cardiomyopathies, factor V leiden, hemophylia, transposition of the great vessels, brugada syndrome, lown-ganong-levine syndrome.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.