Drug, alcohol and other addiction rehab in the United States is big business - $35 billion this year. There are now 14,000+ treatment facilities and growing. A total of 2.5 million persons received treatment, but many more need it and facilities are filled to capacity. However, insurance coverage for rehab is limited. As a result, most of the tab is paid by government/state agencies. High end niches have emerged for the well-heeled (think Hollywood celebrities) and new niches are emerging in areas such as: sex addiction, problem gamblers, Internet addiction, and nicotine addiction. Facilities are also diversifying into treating people with anxiety disorders, eating disorders, and post-traumatic stress by veterans of the wars in Iraq and Afghanistan.