What is Zinc?

What Is Zinc & Why Is It Important?

Zinc is a critical trace mineral involved in over 300 enzymatic reactions in the human body. It plays a vital role in:

• Immune system support

• Wound healing and tissue repair

• DNA synthesis and cell division

• Hormone regulation, including testosterone production

• Antioxidant defense and inflammation control

Zinc is also essential for cognitive function, skin health, and a normal sense of taste and smell. It's especially important during periods of growth, stress, or physical exertion making it key for athletes, children, and anyone looking to optimize recovery and performance.

 

---

 

Zinc Deficiency: A Global Concern

Despite its importance, zinc deficiency affects an estimated 17.3% of the global population, with even higher rates in regions like South Asia and Sub-Saharan Africa where deficiency may exceed 30% (Wessells & Brown, 2012).

Causes of Zinc Deficiency:

• Low intake of animal-based foods (the most bioavailable sources)

• High consumption of phytate-rich plant foods (grains, legumes) that block absorption

• Poor diets and malnutrition

• Chronic illness, infection, or inflammation

• Increased loss through sweat (e.g., athletes)

Common Signs of Deficiency:

• Weakened immune response

• Slow wound healing

• Hair loss

• Low appetite

• Poor growth (children)

• Increased inflammation or oxidative stress

• Lowered testosterone or libido

Zinc deficiency is linked to impaired physical performance, reduced mental clarity, and higher disease risk but often goes undiagnosed.

 

---

 

Zinc’s Effects on Human Health

Immune Function

Zinc is one of the most well-researched minerals for immune health:

• Zinc supports the development and function of T-cells and natural killer cells your frontline immune defenders (Jafari et al., 2022).

• Supplementation can reduce the duration and severity of colds, particularly in zinc-deficient individuals (Hemilä, 2017).

• During COVID-19, zinc gained attention for reducing symptom duration and severity by 20–30% in deficient individuals (Tabatabaeizadeh, 2022).

 

---

 

Inflammation & Antioxidant Support

Zinc contributes to your body's antioxidant system, helping reduce oxidative stress and systemic inflammation.

• Supplementation lowers C-reactive protein (CRP) and interleukin-6 (IL-6) two key inflammatory markers (Mohammadi et al., 2021).

• Deficiency has been associated with elevated inflammation, particularly in people with chronic disease (Zupo et al., 2022).

 

---

 

Metabolic & Cardiovascular Health

Zinc has also been studied for its effects on glucose regulation and lipid metabolism:

• Improves insulin sensitivity and supports healthy blood sugar levels in individuals with metabolic syndrome (Ding et al., 2022; Jafarnejad et al., 2019).

• Helps improve cholesterol profiles lowering LDL and raising HDL.

For people with type 2 diabetes or prediabetes, zinc may offer real metabolic support.

 

---

 

Cognitive Function & Mood

Zinc also impacts brain health, particularly mood regulation:

• Supplementation has been shown to reduce symptoms of depression by 28%, especially in individuals with zinc deficiency (Yosaee et al., 2022).

• A separate meta-analysis found that people with depression had 14% lower zinc levels than non-depressed individuals (Swardfager et al., 2013).

 

---

 

Hormonal Health & Testosterone

Zinc is essential for testosterone production and hormonal balance:

• In men with marginal zinc deficiency, supplementation increased testosterone by 17% (Te et al., 2023).

• In earlier studies, zinc also boosted IGF-1 and growth hormone in deficient subjects (Prasad et al., 1996).

• Zinc’s role in regulating androgens makes it essential for both performance and recovery.

 

---

 

Zinc & Athletic Performance

Zinc directly supports:

• Oxygen transport

• Muscle repair

• Testosterone levels

• Immune resilience during training blocks

Key research:

• 90% of endurance athletes were shown to have suboptimal zinc intake (Micheletti et al., 2001).

• Supplementation improved muscle strength, endurance, and aerobic capacity in zinc-deficient athletes (Ghazzawi et al., 2023).

• Athletes lose ~9% of daily zinc needs through sweat (DeRuisseau et al., 2002).

For athletes and those training regularly, zinc can improve recovery, immune support, and hormonal balance—making it a valuable addition to any performance nutrition strategy.

 

---

 

Zinc & Sleep

Recent research links zinc to sleep quality and duration:

• Low zinc intake was associated with shorter sleep in adults (Ji et al., 2017).

• Trials in infants showed longer sleep duration after zinc supplementation.

• Zinc may act on circadian rhythm regulators, promoting deeper, more restorative sleep (Cherasse & Urade, 2017).

Ownkind’s Sleep Hydration Sachets are designed to support this — with 2 mg of zinc plus magnesium, glycine, ashwagandha, L-theanine, and other sleep-focused ingredients.

 

---

 

How Much Zinc Do You Need?

Athletes or individuals under high physical stress may benefit from slightly higher intake, especially if sweat losses are high.

 

---

 

Best Food Sources of Zinc

Animal-based foods are the most bioavailable sources of zinc.

Top Zinc-Rich Foods:

Plant-based sources are lower in bioavailability due to phytates, which inhibit absorption.

 

---

 

Zinc Supplementation: Forms & Bioavailability

Not all zinc supplements are created equal. The form of zinc affects how well it’s absorbed and utilized.

(Zinc bisglycinate is the preferred form due to better absorption and fewer GI side effects)【Osko et al., 2023; Gandia et al., 2007】.

All Ownkind sachets that contain zinc use bioavailable, gentle forms suitable for daily use.

 

---

 

Zinc in Ownkind Hydration Sachets

Our sachets provide zinc to support:

• Daily immune defense

• Hormonal balance and recovery

• Cognitive clarity and sleep regulation

Want to try them all? Explore the Ownkind Variety Pack.

 

---

 

FAQs

What does zinc do in the body?
It supports immunity, hormone production, protein synthesis, wound healing, and antioxidant defense. It also helps regulate sleep, cognition, and metabolic health.

How much zinc do I need daily?
Men: 11 mg | Women: 8 mg | Higher needs for athletes, pregnant/lactating women, or people with chronic illness.

What foods are high in zinc?
Oysters, beef, poultry, seeds, legumes, and whole grains. Animal sources are absorbed better.

What’s the best form of zinc supplement?
Zinc bisglycinate offers the best absorption with minimal side effects.

Can zinc help with sleep and recovery?
Yes—zinc plays a role in nervous system regulation, circadian rhythm, and physical recovery from stress and exercise.