A March 2021 study by the NICM Health Research Institute at Western Sydney University found that,
"While people usually know that physical activity is important for mood, we now have additional data showing that adequate sleep and less screen time is also critical to reduce depression.”
"The findings also suggest that one's dietary pattern is partly implicated in the germination or exacerbation of depressed mood.
"The results may inform public health policy by further highlighting the important relationship between people being encouraged and supported to engage in a range of health-promoting activities. In particular, maintaining optimal sleep and lessening screen time (which is often an issue in youth), while having adequate physical activity and good dietary quality, may reduce the symptoms of depression,"