Can you still reverse early-onset forgetfulness with your lifestyle?

Fully reversing forgetfulness is not realistic in most cases. But lifestyle changes can slow decline, and sometimes partially reverse it. This works best when a reversible underlying cause is involved, such as poorly controlled blood sugar or a treatable vascular condition.

The strongest evidence relates to addressing cardiovascular risk factors. High blood pressure doubles the risk of mild cognitive problems in people with type 2 diabetes, and cardiovascular disease adds even more to that risk. Poorly controlled blood sugar increases that risk by a third; insulin resistance nearly doubles it. Treating blood pressure and achieving good blood sugar control are therefore the best-supported steps you can take.

Exercise has the broadest evidence base. Active muscles produce substances that help brain cells grow and suppress inflammatory processes that accelerate cognitive decline. One study in frail older adults combined 12 months of exercise, healthy nutrition, vascular care and cognitive training. Multiple outcomes improved significantly, although nearly half of the participants dropped out early.¹ This is a single initial study, so the results have not yet been widely replicated.

Quitting smoking is also relevant: in people with diabetes, smoking increases the risk of cognitive problems by nearly half. Cognitive training and brain stimulation are being studied and show positive effects in small human trials. However, the evidence is thinner than for exercise and vascular control. Whether these effects hold up over the long term has not yet been sufficiently demonstrated.

Mild cognitive impairment, which sits on the boundary between ordinary forgetfulness and early-stage dementia, is not an irreversible verdict. Partial return to normal is possible, but depends strongly on the underlying cause. If there are signs of early Alzheimer's disease, the prognosis is less favourable. Seeing a GP early increases the chance of timely intervention and reduces the risk of falls and hospital admissions. Do not wait too long if symptoms persist.