The streets weren't safe for drug users. So these countries created spaces for them.

The health problems of millions of Americans are directly related to patients' failure to follow doctors’ orders. Community health workers are increasingly successful in New York and other American cities – not to substitute for doctors, but to help patients stick to their treatment plans.

Two columns on how Iran averted a major AIDS epidemic through needle exchange programs; a conservative theocracy is successfully treating drug abuse as if it were Amsterdam.

Tuberculosis is still a rampant problem in the developing world. Doctors are looking for even more advanced ways to test for TB beyond the GeneXpert tests.

Naloxone could be the secret to curing New England's heroin consumption. Trying to expand access to the life-saving overdose antidote is the real obstacle.

One-pill-a-day generic AIDS drugs for poor countries are hard to make because each ingredient is patented by a different pharmaceutical company. The Patent Pool provides a way for companies to donate their intellectual property safely.

At least 25 percent of female veterans were sexually abused in childhood, making it more difficult to reenter civilian life. Volunteers of America runs a holistic housing program for homeless veterans in the U.S.

While critics argue that Naloxone isn't safe for over-the-counter use, some cities have found success distributing Naloxone to community members to help save lives of addicts who overdose. Naloxone can be administered to help those overdosing survive and jump-start the withdrawal process.

About 40 percent more people in the state are seeking treatment for addiction today than a year ago - but the number of deaths from heroin is going up. Local government is scrambling for both funding and awareness to combat the issue.

Slow test results make it difficult to stop the spread of tuberculosis. Using faster diagnostic technology and driving vans to rural areas in Tanzania, GeneXpert is making progress in treating this curable disease.

South Dakota’s “24/7 Sobriety” initiative breathalyzers tens of thousands of people every day in an effort to curb drunk driving. Rather than legislation that takes penalizes offenders by taking away their license, the state addresses the behavioral issue instead. In counties that use the “24/7 Sobriety,” they’ve seen a 12% decrease in repeat drunken-driving arrests.