Boost Immunity and Combat Inflammation with Zinc

Last Updated on February 24, 2025 by Beverly Dix

Why Zinc Matters

We all need the trace mineral zinc to boost immunity and combat inflammation. Constantly active, zinc moves into cells and out to the bloodstream.

Cell Signaling

Zinc activates cells, playing a role in inflammation, immunity, and infection. Also, zinc influences the onset and progression of some chronic diseases and cancers.

Combat Inflammation

Low zinc levels cause increases in your body’s inflammatory response. Therefore, correcting inadequate levels of zinc may benefit people with elevated blood pressure, high blood sugar, abdominal obesity, and abnormal cholesterol or triglyceride levels.

How to Get Enough Zinc

Our bodies do not store zinc. Instead, we absorb zinc from food. Consequently, we need ample daily amounts of zinc for top-notch immune system function and control of inflammation.

As previously stated, we absorb zinc from food. However, the body’s ability to absorb and use zinc depends on the makeup of foods we eat. For example, phytate (an antioxidant found in whole grains, legumes, nuts, and seeds) blocks zinc absorption. Also, other minerals (calcium and iron, for example) influence zinc absorption. So, the World Health Organization’s recommended daily zinc intake factors in your age, weight, sex, and the effect of dietary phytate on zinc absorption.

Reasons for Inadequate Zinc Levels

Causes for zinc malnutrition include:

• Not having enough to eat.
• Failure to eat enough of the right foods.
• Inability to adequately absorb zinc from food.
• Vomiting/diarrhea.

For example, zinc absorption is affected by iron supplementation. Also, excess supplementation of either zinc or copper upsets the body’s optimal zinc-to-copper balance. Supplementation of high-dose zinc for prolonged periods leads to copper deficiency. Of note, impaired zinc-copper balance is often present in elderly populations. Those with Alzheimer dementia, Parkinson disease, and multiple sclerosis.

Zinc’s Primary Role: Boost Immunity and Combat Inflammation

The immune system is highly vulnerable to changes in zinc levels. For this reason, zinc seems to exert an influence on every immunological occurrence.¹ Immune cells produce free radicals while fighting threats to our health, a normal process. However, when our systems become chronically inflamed, free radicals accumulate. Cell and tissue damage result.  

Studies demonstrate a correlation between the seven most common chronic diseases killing Americans and zinc deficiency. Longstanding inflammation is associated with these illnesses. They include heart disease, stroke, diabetes, cancer, lung disease, Alzheimer dementia, and kidney disease. For this reason, if you have any of these conditions, evaluation of your zinc status as well as other micronutrients is wise.  

Zinc affects your body’s ability to detect and attack threats, and protect you from disease. Moreover, low zinc levels increase your risk of catching bacterial, viral, and fungal infections, and impact their severity.  

All disease-producing agents need zinc to set up shop in your body, survive, and multiply. To combat this, the body uses nutritional immunity. When your body detects an offender, zinc distribution in the body changes. 99% of zinc stays inside cells, where your body’s enemies cannot use it. So, minimal levels of zinc remain circulating in the bloodstream. In this way, the invaders cannot get to the zinc they need to survive.¹ 

Benefits of Zinc 

Immune System Support

Zinc is vital for proper functioning of your immune system. It is involved in the development and function of immune cells which play a key role in defending the body against infections. Adequate zinc levels are necessary for the body to mount an effective immune response when faced with bacteria, infections, and viruses.  

Inflammation Regulation

Zinc has anti-inflammatory properties, and it can help balance the body’s inflammatory response. Inflammation is a natural defense mechanism. However, persistent inflammation can lead to health problems including chronic diseases. Zinc helps regulate the production and release of signaling molecules involved in the inflammatory process. 

Infection Control

Zinc can inhibit the replication of some viruses including the common cold virus (rhinovirus). It may also help reduce the severity and duration of cold symptoms. While zinc is not a cure for viral infections, it can potentially aid in recovery and symptom relief. 

Chronic Diseases & Cancers

Research suggests zinc may have a protective role against certain chronic diseases and cancer. These include sickle cell anemia, chronic kidney disease, chronic liver disease, Crohn disease, ulcerative colitis, alcoholism, diabetes, and esophageal cancer. Furthermore, adequate zinc intake has been associated with a reduced risk of heart disease and diabetes. Zinc’s antioxidant properties may help prevent cellular damage and reduce the risk of certain cancers.  

Blood Pressure & Metabolic Health

Low zinc levels have been linked to elevated blood pressure, high blood sugar, abdominal obesity, and abnormal cholesterol and triglyceride levels. Correcting zinc deficiency through diet or supplementation may help improve these metabolic markers and reduce the risk of associated health conditions.  

Takeaway 

Zinc is an essential mineral that plays a crucial role in human health, including immune function and inflammation regulation. Therefore, zinc boosts immunity and combats inflammation. 

While zinc is critical for health, excessive intake has negative effects. Zinc can be obtained from a balanced diet that is made up of foods rich in this mineral. Lean meats, poultry, seafood nuts, seeds, and whole grains contain zinc. If you have any condition where zinc deficiency may play a role, it is advisable to consult with a healthcare professional to evaluate your micronutrient (vitamin and mineral) status.  

References

1. Gammoh NZ, Rink L. Zinc in Infection and Inflammation. Nutrients. 2017; 9(6):624. https://doi.org/10.3390/nu9060624