Gamma-GT
Gamma-GT (GGT) is an enzyme found mainly in the liver and bile ducts.
Gamma-GT (gamma-glutamyl transferase, GGT) is an enzyme found mainly in the liver and bile ducts. It takes part in the body’s handling of glutathione, an important antioxidant. GGT is one of the common liver values. Retesting shows how it changes over time.
Alcohol is the factor that most often raises GGT, especially regular intake. Some medicines, body weight, a high sugar intake and smoking also affect it, and men usually have somewhat higher values than women.
Foods that help
Vegetables, especially cruciferous ones such as broccoli, Brussels sprouts and kale, berries, whole grains and coffee in moderation.
Foods to limit
Alcohol, sugary drinks, fried food and ultra-processed food.
Track it through the year
One value is a snapshot. Following it up shows whether what you changed is working.
Related markers
Educational information only — not a diagnosis. Every result is checked against safe limits, and anything critical is escalated for follow-up.
See all 84 markers →