High sugar 6.9 at gtt bloodsindicate high iron in liver no hepatitis or haemachromatosis u/s shows enlarged fatty liver. Should I be concerned?

Yes. You are mentioning two components of metabolic syndrome: http://www.Mayoclinic.Com/health/metabolic%20syndrome/ds00522 consult your doctor about the appropriate next steps in work-up and possibly management, although it is never too early to eat a healthier diet.