A key vitamin found in meat, fish and milk may help protect the brain as it ages, researchers said.
Vitamin B12 could help stop the brain shrinking – possibly preventing memory loss in older people and dementia.
A study of 107 people aged 61 to 87 found 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.
