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Weakened immune response is the body's reduced ability to fight off infections, illnesses, and diseases effectively. It is caused by nutritional deficiencies like selenium, chronic stress, autoimmune disorders, or underlying medical conditions that compromise immune cell function. The Selenium blood test is the most important test for identifying nutritional deficiencies that may be weakening your immune system.
Weakened immune response is caused by nutritional deficiencies such as selenium, zinc, and vitamins C and D, which are essential for proper immune cell function. Chronic stress, lack of sleep, autoimmune diseases, certain medications like corticosteroids, and underlying conditions such as diabetes or HIV can also compromise immune system strength. Additionally, aging naturally reduces immune efficiency, making older adults more susceptible to infections and slower to recover from illnesses.
The Selenium blood test is the most important test for weakened immune response because selenium is essential for producing immune cells and antibodies that fight infections. This test measures selenium levels in your blood to identify deficiency, which directly compromises your body's ability to defend against viral and bacterial infections. Low selenium levels have been specifically linked to increased susceptibility to viral infections and reduced effectiveness of vaccines, making this test crucial for anyone experiencing frequent illnesses or slow recovery times.
You should get tested if you experience frequent colds or infections that occur more than 3-4 times per year, infections that take unusually long to clear up, or constant fatigue despite adequate rest. Get tested if you notice wounds healing slowly, digestive problems that persist, or if you have chronic conditions like diabetes or autoimmune diseases. Testing is especially important if you are over 65, under high stress, or have recently experienced unexplained weight loss or persistent swollen lymph nodes.
What this means
Your selenium levels are slightly below the optimal range. While not severely deficient, this may affect your immune system's ability to fight infections and could impact thyroid hormone metabolism. Increasing selenium intake through diet or supplementation can help bring levels back to optimal.
Recommended actions
Add two Brazil nuts daily to your diet for excellent selenium content
Include selenium-rich foods like tuna, sardines, eggs, and sunflower seeds
Ensure adequate protein intake as selenium is better absorbed with protein
Retest in 8-12 weeks after dietary changes to monitor improvement
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