Studies show that low zinc levels in adults can be related to alcohol-induced liver damage [source: Kang]. Supplemental zinc, however, can help reduce that damage, in part because it promotes the enzymes that dissipate alcohol.
Zinc has also been found to improve the antioxidant capabilities of the liver, as well as boost a main metal detoxifying compound called metallothionein, or MT. Low MT levels sensitize the liver to potential damage. By stabilizing the gastrointestinal tract, MT can help keep inflammation to a minimum [source: Richards].
Similarly, alcohol consumption can drive down the zinc levels in the thyroid, which can result in a host of medical issues, including compromised thyroid performance and subsequent weight gain.