Scientists studied 250 people with mild cognitive impairment: a condition that can progress to dementia. B vitamins combined with omega-3 can help slow mental decline in older people with memory problems, a new study finds. Dr Celeste de Jager, one of the study’s authors, said: “We previously found that B vitamins are able to slow or prevent the atrophy of the brain and memory decline in people with MCI. This was most effective in those…