---
title: Zinc – Why Alcohol Drains This Essential Trace Element From Your Body
description: "Zinc is an essential trace element your body needs for thousands of proteins – including the enzyme that breaks down alcohol. People who drink heavily for years are very often low on it. Here you'll learn how alcohol disrupts your…"
url: "https://www.bye-bye-booze.com/docs/sobriety-dictionary/zinc/"
updated: "2026-11-07"
category: Sobriety Dictionary
tags:
  - Alcohol dehydrogenase
  - copper
  - DNA methylation
  - zinc
  - zinc deficiency
---

# Zinc – Why Alcohol Drains This Essential Trace Element From Your Body

Zinc is an essential trace element your body needs for thousands of proteins – including the enzyme that breaks down alcohol. People who drink heavily for years are very often low on it. Here you'll learn how alcohol disrupts your zinc balance and why a zinc deficiency can weigh on your mood and your sobriety.

## What Is Zinc?

Zinc is a chemical element and one of the body's [trace elements](https://www.bye-bye-booze.com/docs/sobriety-dictionary/trace-elements/). You only need small amounts, but your body can't make it on its own. An adult carries just two to three grams of zinc in total, most of it in muscle and bone. There is no real reserve your body can tap when supplies run short. That's why zinc has to come in through your diet on a steady basis.

Worldwide, this is a big deal. Researchers estimate that roughly one in six people doesn't get enough zinc, mostly in regions where diets are built on grains and legumes. In the US, true deficiency is less common. But certain groups are at higher risk: older adults, vegetarians and vegans, people with chronic gut or liver disease – and people with [alcohol use disorder](https://www.bye-bye-booze.com/docs/sobriety-dictionary/alcohol-use-disorder/).

## What Your Body Needs Zinc For

Zinc is a true multitasker. An analysis of the human genome found that about 2,800 proteins can bind zinc – roughly one in ten proteins in your body. Many of them are [enzymes](https://www.bye-bye-booze.com/docs/sobriety-dictionary/enzymes/), proteins that speed up chemical reactions. Others control which genes get switched on or off inside a cell.

That's why zinc shows up almost everywhere. It's involved in how you process sugar, fat, and protein, in cell division and wound healing, and in your immune defenses. Your body also needs it to make hormones such as testosterone and [thyroid hormones](https://www.bye-bye-booze.com/docs/sobriety-dictionary/triiodothyronine-t3/). Your senses of taste and smell depend on zinc too, and so do your skin, hair, and nails.

In the brain, zinc acts as a kind of fine-tuner. Certain nerve cells release it together with the messenger [glutamate](https://www.bye-bye-booze.com/docs/sobriety-dictionary/glutamic-acid-glutamate/). There, zinc helps dampen the NMDA receptor system, which plays a key role in stress, learning, and alcohol withdrawal.

## Zinc and Alcohol Metabolism

One enzyme that can't work without zinc is [alcohol dehydrogenase](https://www.bye-bye-booze.com/docs/sobriety-dictionary/alcohol-dehydrogenase/) (ADH). It handles the first step of [alcohol breakdown in the body](https://www.bye-bye-booze.com/docs/sobriety-dictionary/alcohol-breakdown/): in the liver, it turns the alcohol you drink into [acetaldehyde](https://www.bye-bye-booze.com/docs/sobriety-dictionary/acetaldehyde/). Zinc sits right at the active center of the enzyme.

ADH has a second job as well. It helps convert [vitamin A](https://www.bye-bye-booze.com/docs/sobriety-dictionary/vitamin-a/) into its active form, which you need for things like seeing in dim light. Heavy drinking strains this system twice over. Alcohol and vitamin A compete for the same enzyme, and the zinc the enzyme needs is often in short supply. That's why night blindness in heavy drinkers can be linked to zinc deficiency.

## Zinc Deficiency From Alcohol – Why It's So Common

Zinc deficiency is considered the most common trace element problem in alcohol use disorder. A 2018 review estimates that 30 to 50 percent of people with alcohol dependence are low on zinc. In a US study of very heavy drinkers who showed no signs of liver disease yet, about 40 percent had blood zinc levels below normal. The more heavy drinking days participants had, the more likely they were to be deficient. In other words, the deficiency starts long before the liver shows visible damage.

Alcohol attacks your zinc supply on several fronts at once. First, your gut absorbs less zinc because alcohol damages the intestinal lining. Second, your kidneys flush more zinc out through your urine. Third, when the liver is under strain, levels of albumin drop – the protein that carries zinc through your bloodstream to your organs. And fourth, many people eat poorly and too little while they're drinking, so less zinc comes in to begin with.

On top of that, a vicious cycle unfolds in the gut. Zinc deficiency makes the gut wall more permeable, a condition known as [leaky gut](https://www.bye-bye-booze.com/docs/sobriety-dictionary/leaky-gut-and-alcohol/). More bacterial toxins such as [lipopolysaccharides](https://www.bye-bye-booze.com/docs/sobriety-dictionary/lipopolysaccharides-lps-and-alcohol/) then slip into the bloodstream. They fuel inflammation and contribute to [fatty liver](https://www.bye-bye-booze.com/docs/sobriety-dictionary/fatty-liver/) and, later on, [liver cirrhosis](https://www.bye-bye-booze.com/docs/sobriety-dictionary/liver-cirrhosis/). The further liver disease progresses, the more severe the zinc deficiency usually becomes.

## How alcohol drains your zinc

Alcohol hits your zinc supply from several directions at once – that's why deficiency is so common in heavy drinkers.

![Alcohol hits your zinc supply from several directions at once](https://www.bye-bye-booze.com/wp-content/uploads/2026/11/How-alcohol-drains-your-zinc-new-1024x409.jpg)

## What Happens When You're Low on Zinc

### Physical Signs

Typical physical warning signs include wounds that heal slowly, rough or inflamed skin, brittle nails, hair loss, and frequent infections. Many people also notice that food tastes bland or smells seem weaker. In men, zinc deficiency can further lower testosterone, which heavy drinking often pushes down already.

### Mood, Motivation, and Relapse Risk

If you're trying to quit drinking, another consequence may matter more: low zinc and low mood often go hand in hand. A meta-analysis of 17 studies with more than 2,400 participants found that people with depression have lower blood zinc levels on average. The more severe the depression, the bigger the zinc gap. Data like these can't tell us whether low zinc helps cause depression or the other way around. Most likely, each one feeds the other.

For sobriety, that's a risky combination. Feeling down, flat, and unable to enjoy things ([anhedonia](https://www.bye-bye-booze.com/docs/sobriety-dictionary/anhedonia/)) and restless are among the strongest triggers for [craving](https://www.bye-bye-booze.com/docs/sobriety-dictionary/craving/). Those are exactly the feelings alcohol once seemed to fix. An unrecognized zinc deficiency can quietly become a risk factor for [relapse](https://www.bye-bye-booze.com/docs/sobriety-dictionary/relapse-after-alcohol-dependence/).

**Zinc – common signs of deficiency**

- Changes in taste and smell
- Rough skin, eczema, brittle nails, hair loss
- Frequent infections, slow wound healing
- Low mood, lack of drive
- Fatigue, trouble concentrating

*Note:* These signs are nonspecific and can have many causes. A **blood test** is the best way to get clarity.

## How Zinc Deficiency Is Diagnosed

Most signs of zinc deficiency are nonspecific. A blood test from your doctor is the best way to find out, but it isn't perfect either. Your body keeps blood zinc levels stable for a long time, even when tissues are already running low. On the flip side, levels can drop during acute inflammation or when albumin is low, without a true deficiency behind it. That's why your lab result should always be read together with your symptoms, diet, and drinking history.

## Zinc in Your Diet

The best sources of zinc are animal foods: beef, pork, poultry, organ meats, fish, cheese, and eggs. Oysters top the list. Your body absorbs zinc from these foods well. Plant sources include pumpkin seeds, sesame, cashews, oatmeal, lentils, and whole grains. In the US, fortified breakfast cereals are also a major source for many people.

The catch with plant sources is phytates. These storage compounds in plants bind zinc in the gut and make it harder to absorb. Soaking, sprouting, and sourdough fermentation break down part of the phytate. Pairing beans or whole grains with a bit of animal protein also helps your body take up more zinc.

The National Institutes of Health (NIH) sets the Recommended Dietary Allowance at 8 milligrams a day for adult women and 11 milligrams for adult men. These numbers apply to healthy people with normal zinc stores.

**Zinc-rich foods**

- **Animal sources:** beef, pork, poultry, liver, fish and shellfish (especially oysters), cheese, eggs
- **Plant sources:** pumpkin seeds, sesame, cashews, oatmeal, lentils, chickpeas, whole grains
- **Fortified foods:** many breakfast cereals

*Tip:* Phytates make plant zinc harder to absorb. **Soaking, sprouting, and sourdough** help, and so does pairing plant foods with a little animal protein.

## Zinc After You Quit Drinking

Once you stop drinking, the main drivers of zinc deficiency go away. Your gut recovers and absorbs zinc better again, and your kidneys lose less. Refilling empty stores through food alone takes time, though, especially if your diet is high in phytates. Whether extra zinc makes sense for you is best decided with your doctor, ideally after a blood test.

More isn't always better. Taking high amounts of zinc for a long time can lead to copper deficiency, because the two trace elements compete for absorption in the gut. The NIH sets the upper limit for adults at 40 milligrams a day from all sources combined – food, drinks, and supplements. Zinc is also just one piece of the puzzle. [Magnesium](https://www.bye-bye-booze.com/docs/sobriety-dictionary/magnesium-in-alcoholism-and-withdrawal/) and [selenium](https://www.bye-bye-booze.com/docs/sobriety-dictionary/selenium/) are often low in heavy drinkers too. Good nutrition helps your body recover – and takes away one of alcohol's false selling points.

How did you change your eating habits after you quit? Share your experience with others in recovery in our [Bye, Bye, Booze community](https://www.bye-bye-booze.com/community/).

## FAQ: Zinc and Alcoholismn

Why are heavy drinkers so often low on zinc?

Alcohol disrupts zinc balance in several ways at once. Your gut absorbs less, your kidneys flush out more, and a strained liver makes less albumin, the protein that carries zinc in your blood. Poor eating habits add to the problem. Estimates suggest 30 to 50 percent of people with alcohol dependence are affected.

What does zinc have to do with breaking down alcohol?

Zinc is a built-in part of alcohol dehydrogenase, the liver enzyme that turns alcohol into acetaldehyde. The same enzyme also activates vitamin A, which is why zinc deficiency in heavy drinkers can affect vision in dim light.

Can low zinc cause depression?

People with depression have lower zinc levels on average, and the more severe the depression, the bigger the gap. Whether low zinc actually helps cause depression isn't fully settled. For people in recovery, the link matters because low mood can fuel cravings.

Can the body store zinc?

Only to a very limited extent. An adult has about two to three grams of zinc in total, mostly in muscle and bone. But there's no reserve the body can draw on when intake falls short. That's why you need a steady supply from food.

Which foods contain the most zinc?

Oysters are the richest source. In everyday eating, beef, cheese, eggs, and fortified breakfast cereals provide a lot of zinc. Among plant foods, pumpkin seeds, sesame, and oatmeal stand out. Because phytates slow absorption from plants, soaking, sprouting, and sourdough help.

## Sources

- [Andreini C et al. (2006): "Counting the zinc-proteins encoded in the human genome."](https://doi.org/10.1021/pr050361j) Journal of Proteome Research, 5(1).
- [Wessells KR, Brown KH (2012): "Estimating the global prevalence of zinc deficiency: results based on zinc availability in national food supplies and the prevalence of stunting."](https://doi.org/10.1371/journal.pone.0050568) PLoS One, 7(11).
- [Skalny AV et al. (2018): "Zinc deficiency as a mediator of toxic effects of alcohol abuse."](https://doi.org/10.1007/s00394-017-1584-y) European Journal of Nutrition, 57(7).
- [Vatsalya V et al. (2018): "Association of serum zinc with markers of liver injury in very heavy drinking alcohol dependent patients."](https://doi.org/10.1016/j.jnutbio.2018.05.003) Journal of Nutritional Biochemistry, 59.
- [McClain C, Vatsalya V, Cave M (2017): "Role of zinc in the development/progression of alcoholic liver disease."](https://doi.org/10.1007/s11938-017-0132-4) Current Treatment Options in Gastroenterology, 15(2).
- [Zhou Z (2011): "Zinc and alcoholic liver disease."](https://doi.org/10.1159/000324282) Digestive Diseases, 28(6).
- [Swardfager W et al. (2013): "Zinc in depression: a meta-analysis."](https://doi.org/10.1016/j.biopsych.2013.05.008) Biological Psychiatry, 74(12).
- [Office of Dietary Supplements, National Institutes of Health: "Zinc – Fact Sheet for Health Professionals."](https://ods.od.nih.gov/factsheets/Zinc-HealthProfessional/)

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![MD & author at Bye-Bye-Booze](https://www.bye-bye-booze.com/wp-content/uploads/2025/11/Bernd_author_box.jpg)

### Bernd Guzek, MD, PhD

Physician, author & co-founder of Bye-Bye-Booze

Specialized in biochemical mechanisms of addiction and brain metabolism.

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