It can involve problems with memory, language, thinking and judgment that are greater than normal age-related changes.
While it is not exactly known how to prevent cognitive decline, promising evidence suggests lifestyle interventions can preserve and boost breath health, offering protection against brain decline.
According to UK-based nutritionist Libby Limon, dietary supplements hold particular promise in this area.
Here are five supplements shown to stave off the risk of cognitive decline:
According to Limon, B vitamins, particularly folate are proving to play a major role in brain development and health from foetus all the way to old age.
READ MORE: Best supplements for joints: Taking this supplement could significantly reduce joint pain