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Category: > Remedies > 24 Zinc-Rich Plant Foods to Boost Immunity and Fight Disease
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24 Zinc-Rich Plant Foods to Boost Immunity and Fight Disease

Dec 27, 2020 Carly Fraser Post contains aAffiliate links Save For Later Print

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diagram of different plant foods rich in zinc

We often hear about foods rich in calcium and iron, but what about zinc-rich plant foods?

Making sure you’re getting enough zinc in your diet is important not only for your immune system, but it aids in the balancing of hormones, cell division, helps prevent cancer, is a potent anti-ager, and is required for optimal physical performance and proper functioning of red and white blood cells.

And because this mineral is not stored in your body for long periods of time (unlike fat-soluble vitamins A, D, E, and K), you must obtain it through foods or supplements.

What is Zinc?

Zinc is an essential trace mineral, meaning our bodies cannot produce or store it.

It regulates the activity of over 100 different enzymes in the body (1✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source, playing an essential role in immune function (2✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source, protein synthesis (3✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source, wound healing (4✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source, DNA synthesis (5✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source and cell division (6✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source. Zinc is also required for the proper sense of taste and smell (7✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source.

Zinc is found naturally in both plant and animal products.

Most food guides and websites online will tell you that zinc is mostly available in cholesterol and saturated-fat heavy foods like chicken, pork, beef, lamb, liver, cheese, oysters, and other seafood. But these are not the only options.

In fact, there is a wide variety of zinc-rich plant foods. Someone following a plant-based diet could easily get their daily recommended amount of zinc in just one or two meals per day.

What Are the Benefits of Zinc?

As an essential mineral, zinc plays an important role in cellular structure and function. Without it, a lot of things can go awry.

Here are the top 5 benefits of zinc:

1. Immune Function

Zinc is essential for proper immune function. It activates T lymphocytes (T-cells), a type of white blood cell that is central to our body’s immune defenses.

Some of these T-cells are “killer” cells that neutralize pathogens like bacteria, viruses, and fungi. Others are “helper” cells that help other cells of the immune system against infections or cancer (8✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source.

In a review of seven studies, supplementing with 80-92 mg of zinc per day resulted in reduced length of the common cold by up to 33% (9✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source.

Having a zinc deficiency could negatively impact immune function, so much so that it may increase one’s risk of developing chronic disease.

2. Skin Conditions

Zinc is fundamental to skin health. It helps maintain the structure and integrity of the skin, playing a critical role in collagen synthesis (10✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source.

While about half of the total body zinc is in the bones, the skin contains nearly 6% of total body zinc.

For these reasons, zinc is often used in hospitals for the treatment of burns, ulcers, and other skin injuries (11✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source. It can also be used topically to treat acne, herpes, and diaper rash (12✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source.

Both topical and oral zinc treatments can help treat acne by inhibiting the growth of P. acnes bacteria, reducing inflammation, and suppressing oily gland activity (13✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source.

3. Gastrointestinal Problems

Even moderate deficiencies in zinc can interfere with the absorption of nutrients from food in the intestines.

When zinc levels are low, you run the risk of developing gastrointestinal issues like diarrhea, which make it even harder to absorb zinc and other nutrients in food.

Therefore, not only can zinc deficiency cause diarrhea but also chronic diarrhea conditions can cause zinc deficiency, thereby promoting even more diarrhea (14✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source.

4. Reduce Risk of Age-Related Diseases

Zinc may also significantly reduce the risk of age-related diseases like macular degeneration, pneumonia, and other infections.

As with the skin, zinc plays a central role in maintaining the integrity of the macula in our eyes.

Studies have shown that zinc supplementation can help slow the progression of age-related macular degeneration (15✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source, possibly by preventing cellular damage in the retina.

Other studies have discovered that just 45 mg per day of zinc may decrease infection rates in older adults by nearly 66% (16✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source.

5. Decreases Inflammation

Zinc has been demonstrated to be an effective anti-inflammatory and antioxidant agent, helping fight oxidative stress, thereby reducing the chance for disease development (17✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source. As a result, having healthy levels of zinc could help reduce your risk of cancer, heart disease, and dementia.

This mineral also helps reduce levels of certain inflammatory proteins in your body (18✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source.

In a study of 40 older adults, supplementing with 45 mg or more of zinc per day resulted in greater reductions in inflammatory markers than a placebo group (19✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source.

Zinc Deficiency Symptoms

Mild zinc deficiencies are common, mainly in part due to the lack of it in the food we eat. In fact, more than 2 billion people worldwide are deficient in zinc due to inadequate dietary intake (20✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source.

Severe zinc deficiencies, on the other hand, can occur in people with rare genetic mutations, or in infants who breastfeed from mothers who don’t get enough zinc from their diet. It can also show up in those who drink excessive amounts of alcohol and anyone taking immune-suppressing medications.

Symptoms of severe zinc deficiency include:

  • Distorted sense of taste and cravings for saltier, sweeter food.
  • Chronic diarrhea
  • Impaired growth and development
  • Behavioral issues
  • Delayed sexual maturity
  • Skin rashes
  • Nerve dysfunction
  • Slow wound healing

More milder forms of zinc deficiency include symptoms like (21✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source:

  • Decreased immunity
  • Diarrhea
  • Decreased appetite
  • Dry skin
  • Mood disturbances
  • Infertility
  • Slow wound healing
  • Chronic fatigue
  • Brain fog

24 Zinc-Rich Plant Foods

Here are the top plant-based foods highest in zinc (per 100 grams or 3.5 oz):

  • Sesame Seeds (11.16mg, 117% DV)
  • Hemp Seeds (11.5mg, 77% DV)
  • Pumpkin Seeds (10.3mg, 69% DV)
  • Watermelon Seeds (10.2mg, 68% DV)
  • Cashew Nuts (5.8mg, 39% DV)
  • Sunflower Seeds (5mg, 33% DV)
  • Flax Seeds (4.34mg, 29%DV)
  • Chia Seeds (3.5mg, 23% DV)
  • Chickpeas (1.5mg, 10% DV)
  • Shittake Mushrooms (1.33mg, 9% DV)
  • Lentils (1.3mg, 8% DV)
  • Green Peas (1.2mg, 8% DV)
  • Quinoa (1.1mg, 7% DV)
  • Parsley (1.1mg, 7% DV)
  • Kidney Beans (1.0mg, 7% DV)
  • Spinach (0.53mg, 6% DV)
  • Cremini Mushrooms (0.52mg, 5% DV)
  • Avocado (0.6mg, 4% DV)
  • Blackberries (0.5mg, 4% DV)
  • Raspberries (0.4mg, 3% DV)
  • Dates (0.4mg, 3% DV)
  • Pomegranate (0.35mg, 2% DV)
  • Bananas (0.2mg, 1% DV)
  • Figs (0.2mg, 1% DV)

Should I Supplement With Zinc?

While these foods are among the top sources of plant-based foods highest in zinc, you still may need to supplement.

Your body has tight control over zinc levels, so detecting a zinc deficiency with laboratory tests proves difficult. Even if tests indicate normal levels, you still may be deficient.

Doctors will often consider other factors like poor dietary intake and genetics to determine if you need supplementation.

There are many forms of zinc out there, but the best and most absorbable form is ionic zinc sulfate. With a higher bioavailability, it enters your bloodstream within minutes after ingesting.

Stay away from zinc oxide, which is poorly absorbed.

Zinc Dosage Recommendations

Avoid zinc supplements that contain high concentrations of zinc (unless recommended by a doctor).

The daily recommended intake for zinc is around 8 mg for women and 11 mg for men.

It is recommended to not consume more than 40 mg per day (this is the upper limit – but it is pretty hard to go over this limit).

Ingesting too much zinc can interfere with copper and iron absorption. But even then, hinderance in absorption of these minerals has only been reported in those taking over 60 mg of zinc every day for 10 weeks (22✓)✓ Trusted ResourcePubMed CentralHighly respected database from the National Institutes of HealthRead source.

The Bottom Line

Zinc is an essential trace mineral that must come from the food we eat.

It helps keep our immune system strong, reduces inflammation, fights free radical damage and promotes growth and repair.

People with zinc deficiencies can experience many symptoms, ranging from changes in appetite to chronic fatigue, weight gain, slowed wound healing and more.

To fight zinc deficiency, it is important to eat a wide range of zinc-rich plant foods and even supplementing with a mild ionic zinc sulfate supplement.

Different foods rich in zinc with text - 24 foods rich in zinc to help boost immunity, reduce inflammation, and increase antioxidant levels

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Filed Under: Nutrients & Supplements, Remedies Tagged With: minerals, Nutrition, zinc

Carly Fraser

About the Author

Carly Fraser has her BSc (Hons.) Degree in Neuroscience, and is the owner and founder at Live Love Fruit. She currently lives in Winnipeg, Manitoba, with a determined life mission to help inspire and motivate individuals to critically think about what they put in their bodies and to find balance through nutrition and lifestyle. She has helped hundreds of thousands of individuals to re-connect with their bodies and learn self-love through proper eating habits and natural living. She loves to do yoga, dance, and immerse herself in nature.

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Comments

  1. Healthsomeness says

    Sep 5, 2015 at 8:01 am

    Awesome list Carly. Just thought I would share a few more plant based sources of zinc, they might be beneficial to your readers:

    Pine Nuts (6.45 mg / 100g)
    Adzuki Beans (5.04 mg / 100g)
    Pecans (4.53 mg / 100g)
    Brazil Nuts (4.06 mg / 100g)
    Almonds (3.12 mg / 100g)
    Walnuts (3.09 mg / 100g)
    Lima Beans (2.83 mg / 100g)
    Edamame (1.32 mg / 100g)

    You can find a comprehensive list of zinc rich foods here: http://goo.gl/cBjZlF

    Reply
    • Carly Fraser says

      Sep 5, 2015 at 11:07 am

      Great, thank you!!

      Reply
  2. Hamza Butt says

    Jan 22, 2016 at 11:04 am

    Real helpful. Thanks a lot!

    Reply

Trackbacks

  1. 6 Fruit Seeds You Can Eat To Improve Your Health and Prevent Cancer - Live Love Fruit says:
    Apr 8, 2015 at 7:26 pm

    […] 24 Zinc-Rich Plant Foods That Don’t Come From Animal Products […]

    Reply
  2. BELIEVE in yourself! | Dailey Fitness says:
    Apr 21, 2015 at 3:43 pm

    […] The Dailey NUTRITION Tip: EAT ZINC! It’s a commonly known immune booster, but zinc also has other health benefits. Check out this informative article on how you can get plenty of zinc in plant based foods! Eat to LIVE! https://livelovefruit.com/2015/03/24-zinc-rich-plant-foods/ […]

    Reply

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