Nerve Damage Symptoms: People with lower levels of active B12 had more white matter lesions in their brains. White matter carries messages between different parts of the brain.

Can normal B12 levels cause brain damage?

Can Normal Vitamin B12 Levels Still Affect Brain Health? Vitamin B12 has long been considered a vital nutrient for the body and brain. Doctors typically use blood tests to determine the correct levels. If the level is above the recommended limit, a person is considered completely normal. However, new research has raised questions about this notion. Scientists say that many elderly people may develop brain and nerve problems despite normal B12 levels.

Why is there a problem even if the B12 level is normal?

This research was conducted by scientists at the University of California, and the results were published in a medical journal. The study found that some elderly people, despite having normal B12 levels, began experiencing effects on brain function and the nervous system. Vitamin B12 plays a vital role in the body's production of red blood cells, maintaining healthy nerves, and the formation of DNA. Its deficiency can cause problems such as anemia, weakness, numbness in the hands and feet, memory loss, and impaired balance. Until now, doctors have focused primarily on cases of severe deficiency, but new research suggests that problems may begin much earlier than this.

Shocking revelations made in research

The research team studied 231 healthy elderly people with an average age of about 71. None of them had dementia or mild mental impairment. The scientists measured not only total B12 levels but also active B12, the form the body can actually use. Interestingly, most people's B12 levels were normal by medical standards. Despite this, those with low active B12 levels showed slower thinking speed and visual processing. The research also revealed that their brain nerves were slower in responding to signals.

Flaws are emerging in the investigation.

Scientists observed another important finding in the brain scans. People with low active B12 levels had more white matter lesions in their brains. White matter transmits messages between different parts of the brain. Damage to these areas has been linked to stroke, dementia, and mental decline. Neurologists said this study shows that current medical standards are not fully detecting early brain and neurological problems related to B12. They believe that in many people, nerve and brain damage may begin before obvious symptoms appear.

What is the effect of Vitamin B12?

Scientists say that the body's ability to absorb B12 decreases with age. Certain medications, digestive problems, and a strictly vegetarian diet can also increase the risk of B12 deficiency. While the researchers clarified that this study does not directly prove that low active B12 is the cause of mental decline, it does show that brain changes can occur even with normal blood counts.