You need to evaluate for the cause of fatty
liver.
The cause needs to be evaluated to prevent progression into cirrhosis.
Next Steps
Abstinence from alcohol if he consumes it. Certain blood tests need to be done including
Liver function test,
HbA1C,
Thyroid profile and
Lipid profile. A fibroscan may be done to get an objective measure of the fat in liver.
Health Tips
In the meanwhile exercise, alcohol cessation and black coffee might help.