NK cell Functional Test 

Your Immune System’s First Line of Defense — Measured and Strengthened

🧬 What Are NK Cells?

Natural Killer (NK) cells are a special type of white blood cell that plays a critical role in your immune system. Unlike other immune cells that wait for instructions, NK cells act immediately to destroy infected, cancerous, or abnormal cells — without needing prior exposure.

They are your body’s rapid-response team against:

• Viruses

• Tumor cells

• Early cancer development

• Chronic infections

• Damaged or aging cells

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📈 Why Test NK Cell Count and Activity?

There are two ways to assess your NK cells:

TestWhat It MeasuresWhy It Matters

NK Cell Count :  (Level)The number of NK cells in your bloodIndicates whether your body has enough immune "soldiers" ready for defense

NK Cell Activity : The killing ability (cytotoxic function) of your NK cellsShows how well your immune cells can respond to threats like viruses and cancer

Low NK cell levels or weak activity may be linked to:

• Recurrent infections

• Slow recovery from illness

• Higher cancer risk

• Chronic fatigue syndrome

• Poor immune aging

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✅ Who Should Consider This Test?

• Individuals with frequent colds or infections

• People with a family history of cancer

• Those with chronic fatigue, low immunity, or autoimmune issues

• Patients undergoing anti-aging, detox, or immune-rebuilding programs

• Anyone interested in preventive longevity medicine

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🧘‍♀️ How to Boost NK Cell Count & Activity Naturally

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🍵 1. Eat Immunity-Boosting Foods

• Mushrooms (shiitake, maitake, reishi)

• Garlic, ginger, and green tea

• Berries, broccoli, and fermented foods (probiotics)

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🧠 2. Reduce Chronic Stress

• Stress hormones like cortisol suppress NK cell activity

• Try deep breathing, mindfulness, or forest walks

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🏃‍♀️ 3. Exercise Moderately

• Moderate aerobic exercise increases NK cell activity

• Avoid overtraining, which can suppress immune function

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😴 4. Prioritize Sleep

• Just one night of poor sleep can lower NK activity by up to 70%

• Aim for 7–9 hours of restful sleep

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🌞 5. Optimize Vitamin D

• Low vitamin D = low NK function

• Get 15 minutes of sun daily or supplement if needed

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💊 6. Support with Targeted Nutrients

• Zinc, selenium, vitamin C, and omega-3s enhance immune cell function

• Medicinal mushrooms and AHCC (Active Hexose Correlated Compound) may directly increase NK cell activity

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🧠 Fun Fact:

Studies have shown that centenarians (people who live 100+ years) tend to have higher NK cell activity than their peers — suggesting a strong link between NK function and longevity.