Charlie Sheen's doctor says he has HIV, not AIDs. "He is healthy."

Charlie Sheen's doctor says while he has tested positive for HIV, he does not have AIDS and is "absolutely healthy."

In fact, Dr. Robert Huizenga said he is more concerned about Sheen's substance use and depression.

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He joined his famous patient during a second Today Show interview, following Sheen's earlier revelation about his HIV status.

"This is an educational moment," host Matt Lauer said. "People (with HIV) live long, normal, productive lives."

Sheen said he still drinks but no longer does drugs, and that the "freedom" of revealing his health status may quell his desire for drink as well.

Lauer asked if he felt relieved and Sheen said: "More than I thought possible. I feel good about it."