“Because, at the minute, to maintain a healthy weight or to find those green spaces it sometimes requires a quite conscious effort at the individual level if we don’t live in an environment that supports those behaviours.” The study used data from three New Zealand Health Surveys on whether respondents had been diagnosed with depression, anxiety or bipolar disorder, and if they had experienced psychological distress in the previous four weeks. Researchers then ranked the neighbourhoods of respondents according to their relative healthiness. A Healthy Living Index rated each mesh block – the smallest geographical unit for which data is collected by Statistics New Zealand – according to their health constraining and promoting features.