Hi jayare; welcome to HealthcareMagic The increase in SGPT may not be related to smoking but it suggests that there is some problem with liver like fatty liver;hepatitis B;or it may be drug related like when you are on some medicines so please get the other investigations done to rule out hepatitis B and get a ultrasound done to rule out fatty liver or gall stones or infection of gall bladder.With the reports consult a doctor for treatment help regarding the diet. Thanks