Mental Health America recently released their comprehensive State of Mental Health Report , where it ranked how well each state handled mental health challenges, primarily through its citizens access to care and the percentage of people with unmet needs.

And the results are pretty dismal.

Nevada fell last on the list, partly due to a majority of adult residents with mental illness not receiving treatment and a large shortage of care providers. Connecticut ranked No. 1, followed by Massachusetts and Vermont. The report also found that more than half of American adults with a mental health issue do not receive treatment.

The rankings were based on 15 different criteria, including the total number of adults and children with a mental illness, how many mental health care professionals were available and the number of adults who were uninsured. Researchers gathered data from 2011 to 2014, which was the most up-to-date information, to reach their conclusion.

What these rankings come down to is access, investment and explaining to policy makers that they have a choice, Paul Gionfriddo, chief executive officer of Mental Health America, told The Huffington Post. They can invest now in mental health and prevention or they can invest later as it becomes a public health issue.