Hi, I am a 22 year old Male, BMI 23.2. I have done a routine blood test which was largely normal except for Vit D and B12 deficiencies. One other thing that was abnormal were AST Levels, they were high measuring upto 51.8 unit/L.  The ALT levels were in the normal range. As it is related to liver, I was considering what course of action to follow next ? Is this level alarming and what could be causes? I do not indulge in frequent drinking, especially hard liquor, but do have a beer or a smoke very very rarely. I already eat healthy 90% of the time, maintain a diet and calories deficit, lost 10 kgs in 6 months, exercise in the gym 5 times a week. So I do have a good balanced lifestyle overall. Please find my report attached as well and let me know if this is a cause of concern.