July 1 (UPI) -- Opioid addicts covered by Medicare and Medicaid are less likely to receive the mental health and substance use treatment that they need, a new study says. Addicts with public insurance receive more than twice as many sessions if their therapy is also covered by other sources, such as court-mandated treatment, researchers report in the journal Addiction Science & Clinical Practice . "What's most striking is how insurance type fundamentally shapes patient treatment," said