At your age annual health check up should include complete hemogram,
liver and renal function tests, cheat xray. In addition vit D and
B12 levels if relevant symptoms. Random blood
sugar if family history of
diabetes. ECG if family history of heart disease.
Your current problems could be related to 1) indigestion and recurrent gastritis mainly secondary to irregular food habits. 2) dryness of skin. So use moisturiser.