• The half-life of GGT is approximately 26 days, which means that GGT generally returns to normal over about a month of abstinence.
• Some effect of abstinence or reduced consumption on GGT is likely within weeks.
• Resumption of heavy drinking increases GGT within about 2 weeks.
• AST and ALT return to normal more slowly, and recovery rates vary according to age, sex and degree of liver damage.
• Measurements of AST and ALT are recommended about every 2-3 months in the follow-up of heavy drinkers.
• For any individual, there is an indirect correlation between alcohol consumption and abnormal liver enzymes.

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