- Home
- Health Guides
- Complete Guide to Zinc: Uses, Role, and What to Know
Complete Guide to Zinc: Uses, Role, and What to Know
When it comes to nutrition, we hear a lot about proteins, vitamins, and superfoods. But what about the trace elements that quietly do the heavy lifting? Zinc is one of them, and it's essential to many processes, from immune defense to cellular function.
Key Takeaways
- 01.
Zinc supports enzyme function, immune system health, taste and smell, DNA creation, and more.
- 02.
Your body does not produce or store zinc, so it's important to maintain and replenish the body's supply through a balanced diet or through supplementation. Luckily, many foods contain zinc.
- 03.
Supplements can also help ensure you get the zinc your body needs, especially when zinc needs increase due to factors like exercise, stress, or plant-based diets.
Learn more about the many ways it supports your body, and get tips on how to make sure you're consuming enough zinc either through food or supplements.
What Is Zinc?
Zinc is a trace element found in most cells throughout the body—you may also recognize it as the chemical element with symbol Zn on the Periodic Table. It is a mineral that the body's cells need to stay healthy.
Although being a trace element means the body only needs it in small amounts, zinc is required for the catalytic activity of hundreds of enzymes. Zinc is also involved in many aspects of cellular metabolism, and it plays a role in supporting immune function,1 protein and DNA synthesis, and cell signaling and division.2
How Zinc Supports the Body
What exactly does zinc do for the body? This mineral is found in nearly every cell and supports a wide range of biological processes. It is important for tissue repair and helps with recovery after injury or intense exercise. It also plays a role in skin health.3
Additionally, according to the National Institutes of Health, zinc:
- Helps enzymes work properly
- Helps maintain the senses of taste and smell
- Helps with cell growth
Your body also needs zinc to make DNA and proteins. For people with active lifestyles—whether due to sports, high-pressure jobs, or demanding routines—ensuring optimal zinc levels can make a tangible difference.
What Foods Contain Zinc?
Many foods contain zinc. You can likely get enough zinc by consuming a variety of whole foods known to contain the nutrient, such as:
Food | Milligrams (mg) per serving | Percent Daily Value |
|---|---|---|
Oysters, 3 ounces | 28-32 | 256-291 |
Beef, bottom sirloin, roasted, 3 ounces | 3.8 | 35 |
Blue crab, cooked, 3 ounces | 3.2 | 29 |
Breakfast cereals, fortified with 25% of the DV for zinc | 2.8 | 25 |
Cereals, oats, regular and quick, unenriched, cooked with water (1 cup) | 2.3 | 21 |
Pumpkin seeds, roasted, 1 ounce | 2.2 | 20 |
Pork chops | 1.9 | 17 |
Turkey breast, meat only, roasted, 3 ounces | 1.5 | 14 |
Cheese, cheddar, 1.5 ounces | 1.5 | 14 |
Shrimp, cooked, 3 ounces | 1.4 | 13 |
Lentils, boiled, ½ cup | 1.3 | 12 |
Sardines, canned in oil, drained solids with bone, 3 ounces | 1.1 | 10 |
1% milkfat milk, 1 cup, or Greek yogurt, 6 ounces | 1.0 | 9 |
Peanuts, dry roasted, 1 ounce | 0.8 | 7 |
These values are stated by the Office of Dietary Supplements. You can usually check the % Daily Value of zinc per food directly on the nutrition label. You can also learn more on the USDA National Nutrient Database for Zinc.
Zinc Supplements: Are They Necessary?
Certain lifestyles and dietary choices can make it harder to meet your daily zinc needs. The purpose of a zinc supplement is to ensure you're getting all the zinc you need. As mentioned, your body does not store zinc, so you need to replenish it regularly from food or supplements.
You may benefit from supplementation if you:
- Follow a vegan or vegetarian diet, since meat is a good source of zinc.
- Engage in high-intensity exercise, which can increase mineral demands.
How Much Zinc Do You Need Per Day?
The recommended daily intake of zinc varies based on age, gender, and lifestyle. The National Academies of Sciences, Engineering, and Medicine recommends 11 mg per day for adult males and 8 mg per day for adult females.
These are general guidelines; your personal requirement may vary based on your diet, activity level, and overall health. If you suspect you're not getting enough zinc from food alone, consider adjusting your diet or supplementing as needed.
Common Questions About Zinc
What are the benefits of taking zinc daily?
Taking zinc daily ensures that your body's supply is replenished with the necessary zinc levels that play an important role in supporting your immune function, healthy skin, and normal taste and smell.
What are 3 functions of zinc in the body?
Zinc's top five functions in the body include:
- Supporting the immune system (by helping your immune cells develop and function)
- Supporting DNA and protein production
- Acting as a cofactor for enzymes (over 300 enzymes in the body require zinc to carry out chemical reactions)
How AG1 Supports Your Daily Zinc Intake
At AG1, we understand how crucial bioavailability is, which is why we include highly absorbable zinc citrate in AG1 Next Gen, our daily greens powder. AG1 Next Gen contains 20 mg of zinc (182% of the daily value) per standard serving. Therefore, a scoop a day ensures you're getting the necessary amounts of zinc alongside other minerals and vitamins in order to support whole-body health.*
References:
- Prasad AS. Zinc in human health: effect of zinc on immune cells. Mol Med. 2008;14(5-6):353-357. doi:10.2119/2008-00033.Prasad
- National Institutes of Health Office of Dietary Supplements. Zinc fact sheet for consumers. Updated May 22, 2025. Accessed August 10, 2026. https://ods.od.nih.gov/factsheets/Zinc-Consumer/
- Gupta M, Mahajan VK, Mehta KS, Chauhan PS. Zinc therapy in dermatology: a review. Dermatol Res Pract. 2014;2014:709152. doi:10.1155/2014/709152
