Should I rely on the B12 in Spirulina?

Understanding B12 in Algae, Especially Spirulina: Predominantly a Pseudovitamin Analogue

Vitamin B12 is an essential nutrient that plays a crucial role in the formation of red blood cells, neurological function, and DNA synthesis. While many people turn to plant-based sources for their nutritional needs, it is essential to understand that not all sources of B12 are created equal. One such source that has garnered attention is algae, particularly Spirulina. However, the form of B12 found in Spirulina is predominantly a pseudovitamin analogue, which has significant implications for its efficacy as a dietary supplement.

The Nature of Pseudovitamin B12 in Spirulina

Spirulina is a type of cyanobacteria often referred to as blue-green algae. It has been consumed by humans for centuries and is known for its high protein content and various bioactive compounds. However, when it comes to vitamin B12, the story is more complex. Spirulina contains both true vitamin B12 (cobalamin) and pseudovitamin B12 (7-adenyl cyanocobamide). The latter is not readily usable by humans and has a binding affinity to intrinsic factors of about one-third that of true vitamin B12.

Impact on Human Health

The presence of pseudovitamin B12 in Spirulina can have significant consequences for those relying on it as their primary source of this essential nutrient. Pseudovitamin B12 can bind to the same receptors as true vitamin B12 but does not provide the same physiological benefits. This can lead to a functional deficiency even if total B12 levels appear adequate.

Timothy White’s 30-Day Fasting Experiment

To illustrate the impact of relying solely on Spirulina for vitamin B12 intake, we can refer to an experiment by the CEO, Timothy White from Raw Living Spirulina. White undertook—a regimen of this 30-day fasting, consuming one pound of fresh Spirulina daily without additional supplementation. Blood tests were conducted before and after fasting to measure his B12 levels.

• Day 1: B-12 level was 516 pg/mL
• Day 30: B-12 level dropped to 433 pg/mL

This significant decrease in blood B12 concentration highlights the inadequacy of Spirulina as a sole source of vitamin B12. Despite consuming large quantities of Spirulina daily, White’s blood tests showed a marked reduction in his B12 levels over just one month.

Scientific Evidence from NIH Studies

Research from authoritative sources like the National Institutes of Health (NIH) supports these findings. Studies indicate that while some algae contain forms of vitamin B12, these are often pseudovitamin analogues that do not contribute effectively to human nutrition. The NIH emphasizes the importance of distinguishing between true cobalamin and their analogs when considering dietary sources of vitamin B12.

Conclusion

In summary, while Spirulina offers numerous health benefits due to its high protein content and bioactive compounds like C-Phycocyanin, it should not be relied upon as a primary source of vitamin B12. The presence of pseudovitamin analogues means that even large quantities may not meet your nutritional needs for this essential nutrient. For those following plant-based diets or looking for alternative sources of vitamin B12, it is crucial to seek out fortified foods or supplements containing true cobalamin.