What can we do to keep the dreaded dementia at bay? It’s a question that constantly exercises brain researchers, and last week a team of experts declared that we might cut our Alzheimer’s risk by almost half by adopting seven healthy habits. The new list, compiled by American investigators in the journal Neurology, says that in midlife we need to keep active, eat well, lose weight, maintain healthy levels of blood pressure, cholesterol and blood sugar — and not smoke.

The 30-year study of almost 12,000 people, which was led by the University of Mississippi, looked at genes as well as lifestyle and concluded that even if we are genetically disposed to developing Alzheimer’s, the seven habits can still reduce our risk of brain