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Mental health is a
problem around the world. More people are suffering from
, depression, and other disorders. In the USA,
in five Americans has mental
problems. The research has good
on how nature can help us. It says time spent among trees or in
helps us sleep better and improves our concentration. Moreover, a study from Japan found that
have positive effects on mental health. Researchers found that
who had a
of roses on their desk became
after just four minutes.