vitamin B12
Coverage of vitamin B12 in the Nexus archive.
- Bryan Johnson’s chronic disease is notoriously difficult to diagnose
Longevity entrepreneur Bryan Johnson has been diagnosed with autoimmune gastritis, a chronic condition where the body's antibodies attack stomach cells, impairing iron absorption. The disease increases the risk of stomach cancer and can lead to vitamin B12 deficiencies causing anemia and neurological issues.
- A woman who has autoimmune gastritis, the same condition as Bryan Johnson shares what it's like to live with it
Lori Taylor, 60, was diagnosed with autoimmune gastritis (AIG) in 2018, the same condition as Bryan Johnson. The chronic immune disorder causes the body to attack stomach acid-producing cells, leading to nutrient absorption issues and symptoms like hair loss, brain fog, and dysgraphia. Taylor, a registered dietitian, is pursuing a doctorate to research the condition.
- Vitamin B12 and folate deficiencies linked to chronic fatigue
Japanese researchers found that low levels of vitamin B12 and folate may contribute to chronic fatigue and lack of motivation in otherwise healthy people. The study suggests these deficiencies could be a hidden cause of persistent tiredness.
- Scientists are raising new questions about vitamin B12 and cancer
Scientists are discovering that while vitamin B12 is essential for DNA repair and blood cell production, extremely high levels from long-term supplements may be linked to certain cancers or worse cancer outcomes, complicating its previously held 'more is better' reputation.
- Scientists warn that current vitamin B12 guidelines may be putting your brain at risk
Researchers at UC San Francisco have discovered that current vitamin B12 guidelines may be insufficient to protect brain health in older adults. Their study found that seniors with normal but lower active B12 levels exhibited slower cognitive processing, delayed visual processing, and increased white matter damage in the brain.