<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi, my dad 59 yr has GGT of 142, and his ast and alt are within a normal range. His doctor said he has onset of fatty liver, but said its okay if he continues drinking, aslong as its less then 9 glasses of alcohol a week. He currently drinks about 4 times a week, maybe one or 2 drinks. Any advice on what he should do?  <response>: Hi. Thanks for posting query at Chat Doctor. Value of AST or ALT greater than 85 or above maybe investigated further. Alcohol ingestion and obesity are common causes of fatty liver disease. Advice for fatty liver:- strictly abstinence from Alcohol - LOW fat diet should be followed, AVOID junk food and beverages-decreased oil consumption oily food- NO red meat-green vegetables should be ingested daily-use lemon juice lemonade once in a day-reduce weight if overweightobese-recheck liver enzymes after 6 to 8 weeks andor ultrasound. Any further questions are welcomed. Hope to answer your concern. Wish you good health. Regards, Chat Doctor. 