
Chlorella and Vitamin B12: Why It Matters for Your Health
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Why Is Vitamin B12 So Important?
Vitamin B12 is essential for your overall health. It works closely with folate (vitamin B9) to produce red blood cells and synthesize DNA. Together, they support brain function and help form the myelin sheath—a protective layer around nerves that ensures proper signal transmission from your brain to the rest of your body.
If you lack B12, your body suffers. You may experience fatigue, pale skin, numbness in the limbs, poor appetite, or even neurological issues. Many people don’t realize they’re deficient, as symptoms can overlap with other conditions.
Who Is at Risk of B12 Deficiency?
Traditionally, B12 deficiency was linked mainly to vegans and vegetarians, since the most bioavailable form of B12 is found in animal products. However, new research suggests that many more people—including meat eaters and the elderly—may also be affected due to poor absorption.
B12 absorption can decrease with age, certain medications, low stomach acid, and even genetic factors. Standard blood tests often miss true deficiencies. More advanced diagnostics like the methylmalonic acid (MMA) test or the Holotranscobalamin II test offer better insights into your actual B12 levels.
Active vs Inactive B12: What’s the Difference?
Not all B12 is created equal.
- Active B12 (methylcobalamin, adenosylcobalamin, hydroxocobalamin, cyanocobalamin) is the form your body can absorb and use right away.
- Inactive B12 is found in many plant-based sources like spirulina, nori, kombu, and barley. While it may look like B12 in tests, it does not offer the same health benefits and may even block absorption of active B12 when consumed in excess.
That’s why simply eating "B12-rich" foods isn't always enough. You need the right kind of B12.
Foods Rich in Active B12
Active B12 is commonly found in animal products:
- Beef liver
- Tuna, mackerel, sardines
- Shellfish (like clams)
- Cottage cheese, milk, and eggs
These foods provide the most reliable sources of B12, but what if you follow a plant-based diet?
Chlorella: A Rare Plant-Based Source of Active B12

Unlike other plant-based foods, chlorella (especially Chlorella pyrenoidosa) is one of the very few vegan sources of active B12. In a clinical study, vegans and vegetarians who consumed 9g of chlorella daily showed significant improvements in B12 markers, including reduced MMA levels.
Chlorella is more than just a B12 source. It’s also packed with:
- Vitamin A and D
- Chlorophyll (a natural detoxifier)
- Chlorella Growth Factor (CGF) for cellular repair
Why Sun Chlorella Works Better
Not all chlorella is the same. The Sun Chlorella brand uses a unique DYNO™-Mill process that breaks down chlorella’s tough outer cell wall without heat or chemicals. This ensures superior absorption and preserves nutrients.
This makes Sun Chlorella a smart choice for:
- Supporting healthy B12 levels
- Boosting energy
- Promoting natural detox
- Enhancing overall vitality
Looking for a Natural Source of Active Vitamin B12?
Discover the power of Sun Chlorella—one of the only plant-based supplements that naturally contains bioavailable B12, perfect for daily wellness.
Shop Sun Chlorella
Conclusion: Choose Smart, Choose Bioavailable B12
If you’re plant-based or have concerns about B12 absorption, don’t just settle for any B12 source. Look for active B12, and consider adding Sun Chlorella to your daily routine to ensure your body gets what it truly needs.
Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.