Evidence-based nutrition, in plain English — every entry sourced from clinical research.

Zinc is a workhorse trace mineral behind immune function, skin repair and taste. As with iron, the phytates in unsoaked legumes and grains bind zinc and lower how much you absorb — so preparation method matters as much as the headline number.

What is Zinc?

Zinc is a trace mineral that plays a critical role in supporting immune defence, wound healing and hundreds of enzymes. While many general diets overlook it, maintaining optimal levels of Zinc is frequently tracked by people working to optimize their Immune & skin health.

Top Foods High in Zinc

A data-driven breakdown of the foods with the highest concentration of Zinc per 100 g.

Highest dietary sources of Zinc, per 100 g edible portion
FoodZinc% DV
Sesame Seeds7.75 mg70.5%
Pumpkin Seeds6.34 mg57.6%
Sunflower Seeds5.58 mg50.7%
Chia Seeds5.56 mg50.5%
Lean Beef (95% lean)5.09 mg46.3%
Cashews5.07 mg46.1%
Flaxseed4.74 mg43.1%
Turmeric4.5 mg40.9%
Pecans3.93 mg35.7%
Lentils3.86 mg35.1%
Cheddar Cheese3.74 mg34%
Oats3.64 mg33.1%
Black Beans3.37 mg30.6%
Dark Chocolate (70–85%)3.31 mg30.1%
Chickpeas3.12 mg28.4%

How Zinc Impacts Immune & skin health

Research links diets rich in Zinc to changes in Immune & skin health. Optimizing intake of these foods can support healthy Immune & skin health levels via acting as a structural and catalytic cofactor for over 300 enzymes, including those that build and repair tissue.

Encyclopedia Insight: For maximum absorption, pair Zinc-rich foods with animal protein or a source of vitamin C, and soaking or sprouting high-phytate plant sources to free more zinc for absorption to optimize bioavailability.

Scientific references & clinical evidence

This guide is built on peer-reviewed research — verify the primary sources below.

  1. The American journal of tropical medicine and hygiene (2020). “Zinc Supplementation Reduces Common Cold Duration among Healthy Adults: A Systematic Review of Randomized Controlled Trials with Micronutrients Supplementation”. PubMed / source ↗
  2. The Cochrane database of systematic reviews (2024). “Zinc for prevention and treatment of the common cold”. PubMed / source ↗

Written by the Nutrition Encyclopedia team · medically reviewed by Dr. Sunaina Tariq, MBBS

Last updated 22 June 2026

Nutrition values are approximations compiled from public food-composition databases (USDA FoodData Central) and are provided for educational purposes only — not medical advice.

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