Vitamin Information Center

Being a vegetarian may actually be bad for your brain, according to a study published in the Sept. 9 issue of Neurology, The Sun reported.

The study said those on a meat-free diet are six times more likely to suffer brain shrinkage as the most vitamin B12 is found in meats, liver, fish and milk.

According to the study, vitamin B12 may protect older people against brain shrinkage.

A study of 107 people between the ages of 61 and 87 found that people who had higher B12 levels were six times less likely to experience a loss in brain volume compared to those who had lower levels of the vitamin in their blood. None of the people in the study had a B12 deficiency.

Brain shrinkage typically occurs after the age of 60 and has been linked to memory loss.

For the research, participants underwent brain scans, memory testing and physical exams. Researchers also collected blood samples to check vitamin B12 levels. Brain scans and memory tests were performed five years after the initial testing.

“Many factors that affect brain health are thought to be out of our control, but this study suggests that simply adjusting our diets to consume more vitamin B12 through eating meat, fish, fortified cereals or milk may be something we can easily adjust to prevent brain shrinkage and so perhaps save our memory,” said study author Anna Vogiatzoglou, of the University of Oxford, in a news release.

Vogiatzoglou said the study did not look at whether taking vitamin B12 supplements would have the same effect on memory.

A KEY vitamin found in fish, meat and milk may protect the brain as it ages, according to a new study.

The study, of 107 people aged 61-87, found that vitamin B12 could help stop the brain shrinking and maybe prevent memory loss in older people and dementia.

The study showed that those with lower vitamin B12 levels in their blood were six times more likely to experience brain shrinkage compared with those who had higher levels of the vitamin.

Researcher Anna Vogiatzoglou, from the department of physiology, anatomy and genetics at Oxford University, said: “Many factors that affect brain health are thought to be out of our control, but this study suggests that simply adjusting our diets to consume more vitamin B12 through eating meat, fish, fortified cereals or milk may be something we can easily adjust to prevent brain shrinkage and so perhaps save our memory.

“Research shows that vitamin B12 deficiency is a public health problem, especially among the elderly, so more vitamin B12 intake could help reverse this problem.”

The study looked at brain volume and loss was measured every year for five years. None of the people enrolled in the study were suffering memory loss at the start of the study and had sufficient vitamin B12.

The participants were given yearly physical examinations, MRI scans of their brains, tests to check their cognitive and memory skills, and blood tests to determine their levels of vitamin B12.

The results showed decrease in brain volume was greater among those with lower vitamin B12 levels.

Elderly people who consume enough meat, fish and milk containing vitamin B12 may help prevent their brains from shrinking and may preserve their memories, Oxford researchers said.

People who had higher vitamin B12 levels were six times less likely to experience brain shrinkage compared with those who had lower levels, according to a study from the university’s Oxford Project to Investigate Memory and Ageing in the journal Neurology.

Vitamin B12 is important for the normal functioning of the brain and nervous system and the formation of blood. Deficiency of the vitamin is linked to tiredness, irritability and depression as well as decreased mental capacity, concentration and memory. A shrinking brain is associated with the development of Alzheimer’s disease.
“Simply adjusting our diets to consume more vitamin B12 through eating meat, fish, fortified cereals or milk may be something we can easily do to prevent brain shrinkage and so perhaps save our memory,” said lead Oxford researcher Anna Vogiatzoglou.

The researchers performed brain scans, memory testing and physical examinations on 107 people aged 61-87.