Article: High levels of GGT in the blood can also stem from frequent alcohol consumption, even if the liver is in fine condition. When a person drinks alcohol excessively, it activates a metabolic pathway which releases GGT to help breakdown the alcohol. So, to lower your GGT, work on drinking less alcohol. The guidelines for moderate drinking suggest that women under 65 have up to 1 drink a day, and that men under 65 have up to 2 drinks a day. Coffee, in general, protects the liver from substances that would otherwise harm it, including GGT. Have 2 or 3 cups in the morning, and another cup or 2 later in the day. In individuals with high levels of GGT—whether from a liver condition or from alcohol use—frequent coffee drinking can lower the amount of GGT in your blood. Excessive coffee consumption can carry health risks. Adults should avoid drinking more than about 4 mugs of coffee each day. Excessive drinking is defined as consuming, on average, 4-6 alcoholic drinks per day. If you’re a heavy drinker and consume more than 80 grams (2.8 oz) of alcohol a day, you may be raising your GGT to unhealthy levels. Visit your doctor, and ask them to administer bloodwork to measure your GGT levels. Your doctor will draw blood from a vein in your arm, and send it to a lab for testing.  Your doctor will likely instruct you to avoid eating, drinking, or taking medications for 10-12 hours prior to your bloodwork, as food, drinks, and medicines can affect your liver function tests. Talk to your doctor about all of the medicines and supplements you're taking, including those available over-the-counter. Expect your lab results to take at least a few hours but possibly a few days to be ready.

What is a summary?
Avoid drinking more than 1 or 2 alcoholic drinks per day. Increase your daily coffee consumption. Ask your doctor for a GGT test if you drink excessively.