Story perspectives

Vitamin B12 Deficiency: Risks, Sources, and Daily Recommendations

10/14/2025

31 4

Summary

Story summary

Vitamin B12 is essential for red blood cell formation, neurological function, and DNA synthesis.
Deficiencies are common due to poor absorption or limited dietary intake, and can lead to megaloblastic anemia and neurological damage.
Natural sources include organ meats and shellfish.
Fortified foods help those avoiding animal products.
The U.S. National Institutes of Health (NIH) recommends 2.4 µg daily for adults, increasing during pregnancy and lactation.

1 of 1

Story summary

Vitamin B12 is essential for red blood cell formation, neurological function, and DNA synthesis.
Deficiencies are common due to poor absorption or limited dietary intake, and can lead to megaloblastic anemia and neurological damage.
Natural sources include organ meats and shellfish.
Fortified foods help those avoiding animal products.
The U.S. National Institutes of Health (NIH) recommends 2.4 µg daily for adults, increasing during pregnancy and lactation.