Over the last decade, evidence increased to show that cardiovascular issues and mental health problems are linked. If you have unresolved cardiovascular problems, they may be worsening your mental health challenges. ANS testing provides your physician with information that may change the recommended treatment plan for you. Additionally, ANS testing looks at mental stress indicators to see if your mental health is negatively affecting your heart health. If you have an un-diagnosed or uncontrolled heart issue, it may inhibit the ability of your mental health treatment to provide you with maximum benefit.