What Harms the Heart Often Harms the Brain
A fifth reason memory problems become more common after 55 is that vascular and metabolic risks become harder to ignore. High blood pressure, diabetes, stroke, obesity, smoking, inactivity, and unhealthy cholesterol all increase with age, and these aren't just heart issues. The World Health Organization notes that many factors linked to heart disease are also associated with cognitive decline and dementia. Evidence connects higher cardiovascular risk factors—like blood sugar, body mass index, and blood pressure—to worse cognitive health later in life. This explains why memory can fade gradually in some people long before a formal diagnosis: the brain relies on healthy blood vessels, steady blood flow, and good overall metabolic health.
