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Carbon-reducing behaviour, like walking, cycling and cutting meat consumption, generates health co-benefits. Our study indicated that a large proportion of the older age groups practised carbon-reducing behaviour, contrary to the general conception that the younger generation adopts such environmental behaviour more readily. Using less packaging and shopping bags was the most common carbon-reducing behaviour, and was practised by 70.1% of interviewees every day. Only 3.5% of interviewees were vegetarian and about half (49%) of meat eaters, especially males, had never thought of eating vegetables only for at least one day a week.