Zinc: Benefits, Sources and Daily Intake

Zinc plays an essential role in your body, from supporting the normal function of your immune system to contributing to healthy skin and the maintenance of normal bones. This essential mineral is involved in countless bodily processes, but the question remains: are you getting enough of it? It's only natural to want to know how much zinc you need, which foods provide it, and when taking a supplement may be worth considering.

Table of Contents

• What is zinc and why does your body need it?
• What is the recommended daily intake?
• Which foods contain the most zinc?
• How can you recognise a zinc deficiency?
• Why might active people need more zinc?
• What is the difference between zinc bisglycinate and zinc oxide?
• When is taking a zinc supplement worthwhile?
• How can you prevent stomach discomfort when taking zinc?
• Which other minerals should you be aware of?
• How should you store supplements to maintain their quality?
• Frequently Asked Questions about Zinc

Discover the essential role zinc plays in supporting your overall health.

What is zinc and why does your body need it?

Zinc is an essential mineral that your body cannot produce on its own, which means you need to obtain it through your diet. It is involved in many important processes, including cell division and protein synthesis. Zinc also contributes to the maintenance of normal bones, skin, hair, and nails. Without an adequate intake, certain bodily functions may not work as efficiently. For this reason, it's important to consume enough zinc as part of your daily diet.

Zinc and the normal function of the immune system

One of zinc's most important functions is its contribution to the normal function of the immune system. Zinc is involved in many physiological processes that support your body's natural defence mechanisms. VITBLISS offers the Beauty Card, which includes zinc as one of its carefully selected nutrients. These Supplement Cards have been developed by pharmacists to support specific nutritional needs through clearly organised daily servings. You can learn more about the VITBLISS Supplement Cards at vitbliss.com.

What is the recommended daily intake?

The amount of zinc you need each day varies from person to person. Factors such as age, sex, and individual circumstances all influence your daily requirements. For most people, a varied diet provides sufficient zinc through foods such as meat, dairy products, legumes, and nuts. As a result, zinc deficiency is relatively uncommon among people who eat a balanced diet.

Lifestyle factors that influence zinc requirements

Your lifestyle can also affect your zinc needs. Pregnant women, women who are breastfeeding, and people following vegetarian or vegan diets may require additional attention to their zinc intake. People who exercise intensively may also lose small amounts of zinc through perspiration, slightly increasing their nutritional requirements.  For adults over the age of 50, the pharmacist-formulated VITBLISS Supplement Cards provide a practical way to organise your daily intake of zinc and other essential nutrients. The cards are designed to support areas such as energy, bones and joints, immunity, and overall vitality while providing a simple daily routine.

Which foods contain the most zinc?

Zinc is naturally present in a wide variety of foods and plays an important role in many bodily functions. The richest dietary sources are animal-based foods such as meat, fish, shellfish, and dairy products. Red meat, including beef and lamb, contains particularly high amounts of zinc, while oysters and crab are also excellent sources. Eggs likewise contribute useful amounts of this essential mineral. Including a variety of these foods in your diet can help maintain a healthy zinc intake as part of a balanced eating pattern.

Plant-based sources of zinc

For people following a mainly plant-based diet, there are also several good sources of zinc. Legumes such as lentils, chickpeas, and beans naturally contain zinc, as do nuts and seeds, including pumpkin seeds, cashews, and sesame seeds. Whole grains such as oats and quinoa also contribute to your daily zinc intake. It's worth remembering that naturally occurring phytates in plant foods can reduce zinc absorption. However, soaking, sprouting, or fermenting these foods can help improve the bioavailability of zinc. For this reason, variety is especially important within a plant-based diet.

How can you recognise a zinc deficiency?

Recognising a zinc deficiency is not always straightforward because many of the symptoms are general and may have several possible causes. You may experience tiredness, reduced appetite, or notice that small wounds seem to heal more slowly than usual. However, these symptoms are not unique to zinc deficiency, making it difficult to identify the cause without professional assessment. A balanced diet remains the best starting point. If you suspect that your zinc intake may be insufficient, it's advisable to discuss your concerns with a healthcare professional.

Mild signs that may indicate low zinc intake

Some milder signs that may be associated with inadequate zinc intake include changes in the skin, such as dryness or slower recovery from blemishes. Some people also notice changes in their sense of taste or smell, while others may experience thinning hair or increased hair loss. These signs are often subtle and can easily go unnoticed in everyday life. VITBLISS also offers Supplement Cards designed to support areas such as Digestion & Gut Health, helping you maintain a balanced intake of carefully selected nutrients as part of your daily routine.

Why might active people need more zinc?

People who exercise regularly or lead an active lifestyle generally have higher nutritional requirements, including for zinc. Physical activity increases metabolic demands, and during intensive exercise small amounts of zinc are lost through perspiration. For this reason, maintaining an adequate zinc intake remains important for physically active adults as part of a varied and balanced diet.

Zinc and normal body functions in active adults

It's therefore not surprising that many active people pay closer attention to their zinc intake. Zinc contributes to several important physiological functions and forms part of a balanced diet that supports an active lifestyle. Maintaining adequate zinc intake also contributes to the maintenance of normal bones and supports the normal function of the immune system. For people looking for a structured supplement routine, the VITBLISS Energy Card has been developed by pharmacists to support energy and vitality through carefully selected nutrients tailored to active adults.

What is the difference between zinc bisglycinate and zinc oxide?

Zinc bisglycinate and zinc oxide are two commonly used forms of zinc supplements. The main difference lies in how well they are absorbed by the body. Zinc oxide is generally less bioavailable, meaning that a larger proportion of the zinc you consume passes through the body without being absorbed. Although it is often a more affordable option, it may be less effective at increasing your zinc intake.

The benefits of zinc bisglycinate

Zinc bisglycinate, on the other hand, is an organic form of zinc in which the mineral is bound to the amino acid glycine. This bond makes the zinc easier for the body to absorb and is one of the reasons why zinc bisglycinate is often chosen for its high bioavailability. Because of its improved absorption, zinc bisglycinate is frequently considered a suitable option for people looking to supplement their zinc intake efficiently. The VITBLISS Supplement Cards use this highly bioavailable form of zinc. More information about these and other Supplement Cards can be found at vitbliss.com.

When is taking a zinc supplement worthwhile?

Taking a zinc supplement may be worth considering if you suspect that your normal diet does not provide enough zinc. This may be the case if you follow a highly restrictive diet, such as certain vegan eating patterns, or if your diet lacks sufficient variety. People who exercise intensively may also have a slightly higher requirement for zinc due to increased physical demands. If you notice symptoms that could be associated with a low zinc intake—such as reduced immune function or changes to your skin—it may be sensible to review your dietary intake, although these symptoms are often general and not specific to zinc.

Situations where zinc supplementation may be appropriate

There are certain situations in which zinc supplementation may deserve additional consideration. Examples include people who take medication that affects zinc absorption, older adults whose nutrient absorption may naturally become less efficient, or people recovering from illness or periods of prolonged stress. For these groups, a supplement can be a practical way to complement dietary zinc intake. VITBLISS offers pharmacist-formulated Supplement Cards that help create a simple and structured daily supplement routine.

How can you prevent stomach discomfort when taking zinc?

Some people experience mild stomach discomfort, nausea, or an unsettled stomach when taking zinc supplements, particularly if they are taken in higher doses or on an empty stomach. To reduce the likelihood of digestive discomfort, it is generally recommended to take zinc during or immediately after a meal. Food helps slow absorption and reduces direct contact between the supplement and the stomach lining, making zinc easier to tolerate. The type of zinc supplement may also make a difference. Certain forms, such as zinc citrate and zinc gluconate, are generally considered gentler on the stomach than zinc sulfate.

Taking zinc with meals

Taking your zinc supplement alongside breakfast, lunch, or dinner is a simple way to minimise digestive discomfort. Avoid taking zinc first thing in the morning on an empty stomach whenever possible. Starting with a lower dosage and increasing gradually, if appropriate, may also help your body adjust more comfortably. These simple measures allow you to include zinc in your routine while reducing the likelihood of unwanted digestive side effects.

Which other minerals should you be aware of?

When taking zinc supplements, it's important to be aware that certain minerals can influence one another's absorption. Maintaining a balanced intake of minerals helps ensure that your body can absorb and utilise them effectively. Rather than focusing on one nutrient in isolation, it is generally better to consider your overall nutritional balance. Understanding these interactions allows you to make informed decisions about both your diet and any supplements you choose to take.

The interaction between zinc, copper, and iron

One of the best-known interactions is the relationship between zinc, copper, and iron. Taking high doses of zinc over a prolonged period may reduce copper absorption, potentially contributing to a copper deficiency. Likewise, very high iron intakes may reduce zinc absorption. For this reason, if you are considering long-term zinc supplementation—particularly at higher doses—it is sensible to pay attention to your overall intake of copper and iron as well. If you are unsure about the right balance for your situation, VITBLISS recommends discussing your nutritional needs with your doctor or another qualified healthcare professional, especially if you take medication or have an existing medical condition.

How should you store supplements to maintain their quality?

Storing your supplements correctly helps preserve their quality and stability. Factors such as temperature, light, and humidity can all influence the stability of active ingredients, including zinc. For this reason, supplements should generally be stored in a cool, dry, and dark place to help maintain their quality throughout their shelf life. Taking a few simple storage precautions helps ensure that your supplements remain in good condition until the final serving.

The best storage conditions for zinc supplements

To help maintain the quality of zinc supplements, avoid storing them in places where temperature and humidity fluctuate significantly, such as bathrooms or near kitchen appliances. Direct sunlight should also be avoided, as prolonged exposure may gradually affect the stability of certain nutrients. Keeping supplements in their original packaging is generally the best option, as it has been specifically designed to protect the contents from external influences. Following these simple storage guidelines helps preserve the quality of your zinc supplement throughout its recommended shelf life.

Conclusion: Zinc

You now have a clearer understanding of the important role zinc plays in your body, from contributing to the normal function of the immune system to supporting the maintenance of normal bones, skin, hair, and nails. Your zinc requirements are personal and are influenced by factors such as your diet, lifestyle, age, and activity level. Whether you obtain zinc primarily through animal-based or plant-based foods, maintaining a consistent intake as part of a varied and balanced diet is the most important consideration. If you're unsure whether your diet provides enough zinc, or if you'd like a more structured approach to your daily nutrient intake, VITBLISS Supplement Cards, developed and reviewed by pharmacists, offer a simple and convenient solution. Each card provides clearly organised daily servings tailored to specific health goals, making it easier to maintain a consistent supplement routine.