A food desert is an area with no shop selling fresh food within walking distance, making a balanced diet difficult. Usually framed as a rural problem, it also appears inside big cities, concentrated in districts where redevelopment has stalled and in ageing hillside housing.

Older people bear the brunt. For those without a car and unaccustomed to ordering online, slopes and stairways turn grocery shopping into physical labour. The result is greater reliance on shelf-stable processed food and the risk of poor nutrition.

Responses have included mobile markets, neighbourhood group buying and delivery tied to bus routes. Sustaining any of them, critics note, requires both municipal funding and participation by local merchants.

For older Chinese residents of Korea, a language barrier is layered on top. Ordering apps and delivery instructions are Korean-first, so those without family to ask face steeper obstacles. Some municipalities and Chinese associations pair multilingual guidance with group purchasing.

Hwagyo Sibo does not rank the policy options. The confirmed facts are that low food-access areas exist within Seoul and that older residents are the most affected.