In public gatherings, we become more vulnerable to harmful germs and bacteria, so maintaining hand hygiene and personal distance is important. But have you ever noticed that some people fall sick too often despite following all safety measures, while others stay healthy even without any precautions? This difference can be due to many factors, with the immune system being one of the most important.
How your body tackles dangerous intruders can determine your chances of illness. Just like any other bodily function, your immune system requires certain nutrients to support its functions. In this guide, learn about these nutrients that you should prioritize in daily meals for a strong body defense.
List of Important Micronutrients for Strong Immunity
The immune system carries out various processes, such as producing antibodies, trapping harmful invaders, and identifying antigens to prepare for future threats. From innate to adaptive responses, various organs, cells, and physical barriers are involved, and each one requires certain nutrients for optimal performance.
Some nutrients help in antioxidant activity by neutralizing free radicals, while others work for anti-inflammatory functions or strengthen physical barriers. Here is the list of all minerals and vitamins behind a normal immune response:
- Vitamin A
- Vitamin B6 and B12
- Vitamin C
- Vitamin D
- Vitamin E
- Vitamin K
- Folate
- Copper
- Iodine
- Iron
- Magnesium
- Selenium
- Zinc
How Do Nutrient Deficiencies Affect Immune Function?
If you are on a restricted diet or have an imbalanced diet, you may develop nutrient deficiencies, especially when there are no other dietary sources or supplements to meet your nutritional needs. Here is how various nutrient deficiencies suppress your immune responses:
- Folate deficiency reduces the level of specific white blood cells such as T-lymphocytes, which are responsible for attacking infected cells.
- Vitamin B12 deficiency reduces the performance of Neutrophils, white blood cells that destroy harmful invaders by engulfing them.
- Lower Vitamin A levels can impair the body’s natural ability to maintain protective barriers, such as surface linings and internal cavities, increasing the chance of outside pathogens entering.
- Magnesium deficiency increases oxidative stress and inflammation, triggering various age-related medical conditions.
- In seniors and infants, copper deficiency can weaken the immune response, increasing the risk of getting infections easily.
When to Take Supplementation for the Immune System
In the wellness industry, you get plenty of supplements with claims that they improve defense against infection and chronic conditions. Let’s be realistic: a balanced diet is enough to have normal immune responses against harmful radicals. No supplement can boost the immune response beyond its normal capacity.
However, immunity supplements can support the immune response by addressing possible nutritional deficiencies. They may also improve bioavailability by acting as natural bioenhancers for faster nutrient absorption. However, supplements are safe and beneficial if you consider the following:
Herbal Profile
The effectiveness of supplements depends on their ingredients, including nutrients and natural or herbal extracts. For example, some supplements contain Echinacea and elderberry herbal compounds for symptoms of the common cold, influenza, and other respiratory infections.
Others may contain omega-3 fatty acids such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) to support immune responses through their antimicrobial effects.
Appropriate Dosages
Overconsumption of dietary supplements can cause minor to serious side effects and even organ failure. To avoid any side effects, have an adequate dosage by considering:
- The recommended dietary allowance refers to the amount of a nutrient your body needs daily.
- The upper limit intake is the maximum amount you can consume of any nutrient without facing side effects.
Possible Nutrient Interactions
Start with one supplement at a time, as having various supplements can increase the risk of exceeding an upper intake level and can also hinder the absorption of others. For example, avoid taking calcium and iron supplements together, as it can affect iron bioavailability.
Likewise, avoid taking calcium with magnesium; space them out for optimal absorption. However, some nutrients improve absorption when taken together, such as vitamin C with iron and calcium with vitamin D, so prefer taking them together to maximize benefits.
Bottom Line
A healthy immune system depends on multiple factors, such as quality sleep, adequate hydration, stress management, and, most importantly, proper nutrition. Consider a well-balanced diet that includes all food groups and provides vitamins and minerals such as A, C, D, and E, B vitamins, zinc, iron, and selenium. Preventing their deficiencies through food or supplements supports normal immune responses against harmful invaders. However, when supplementing, consider appropriate dosages and potential nutrient interactions to avoid side effects.
David Prior
David Prior is the editor of Today News, responsible for the overall editorial strategy. He is an NCTJ-qualified journalist with over 20 years’ experience, and is also editor of the award-winning hyperlocal news title Altrincham Today. His LinkedIn profile is here.
