The idea comes from Japan, where forest bathing has been practised for decades. Scientists are also investigating fragrant plant chemicals called terpenes because laboratory research suggests some may reduce inflammation and support brain health. The strongest aspect of this body of research is that many independent studies report similar benefits across mental and physical health. If you care about mental health, please read studies about how dairy foods may influence depression risk, and 6 foods you can eat to improve mental health. For more mental health information, please see recent studies about top foods to tame your stress, and Omega-3 fats may help reduce depression.