Alzheimer's disease may begin silently in the brain as early as a person's late 50s — decades before any recognisable symptoms appear — according to new research from the Mayo Clinic. As reported by Antigua Observer, the findings were shared by neurologist Dr Ronald Peterson, who leads the Mayo Clinic Study of Aging, during an interview on Observer AM on Thursday.

Dr Peterson outlined how the disease can develop deep within the brain long before patients or their families notice any cognitive changes, underscoring the importance of early awareness and monitoring.

The research adds to a growing body of evidence suggesting that Alzheimer's is not simply a condition of old age, but a disease with roots that may stretch back to midlife.