Japan faces a growing risk of a banana shortage after disruptions tied to the Middle East conflict spread to global supplies of ethylene, a gas used to ripen bananas. Bananas are shipped from producing countries while still green and are then ripened in controlled rooms filled with ethylene before reaching retailers. Multiple reports say ethylene supply is tightening because fewer quantities of the gas are available. The gas is derived from naphtha, and supply of naphtha is affected by broader energy and shipping disruptions linked to the conflict. Japan relies heavily on imported energy inputs; reports note it imports more than 90% of its crude oil, leaving supply chains more exposed to international shocks. One estimate cited in coverage states Japan bought about 1 million tonnes of bananas last year, underscoring the scale of demand. The reports indicate that reduced ethylene availability could delay ripening and make bananas harder to obtain on dining tables and store shelves, potentially leading to shortages rather than an immediate full stop in supply.