In your 30’s, the best thing you can do for yourself, if you do not know where to start to screen for health issues is to take a full blood panel. This includes a complete blood profile, liver and kidney function, fasting lipid and blood sugars and a urine testing. More often than not, if you do not (yet)have any symptoms of ailment, it can be detected in your blood tests. Non communicable diseases are highly preventable/treatable especially diabetes mellitus and dyslipidemia.