A homeless boy takes a shower at Inhijambia Association, a drug rehab center for street children, in Managua June 11, 2012. According to the association, about 500 teenagers addicted to glue wander in the streets of the Oriental Market, considered one of the largest in Central America. Picture taken June 11, 2012. REUTERS/Oswaldo Rivas (NICARAGUA - Tags: DRUGS SOCIETY POVERTY)

Homeless glue sniffers take a break after a soccer game at the Oriental Market in Managua June 12, 2012. According to Inhijambia Association, a drug rehab center for street children, about 500 teenagers addicted to glue wander in the streets of the market that is considered one of the largest in Central America. Picture taken June 12, 2012. REUTERS/Oswaldo Rivas (NICARAGUA - Tags: SOCIETY POVERTY DRUGS)

A drug addict shows the face of Nicaragua's President Daniel Ortega tattooed on his back after sniffing glue in a damaged building in the suburb of Managua July 16, 2012. The words on the back read "Daniel, my President". REUTERS/Oswaldo Rivas (NICARAGUA - Tags: DRUGS SOCIETY)

A drug addict holds glue meant for sniffing in a damaged building in the suburb of Managua July 16, 2012. REUTERS/Oswaldo Rivas (NICARAGUA - Tags: DRUGS SOCIETY)

A drug addict shows a tattoo of the flag of the Sandinista National Liberation Front, on his face after sniffing glue in a damaged building in the suburb of Managua July 16, 2012. REUTERS/Oswaldo Rivas (NICARAGUA - Tags: DRUGS SOCIETY)

A drug addict poses for a picture after sniffing glue in a damaged building in the suburb of Managua July 16, 2012. REUTERS/Oswaldo Rivas (NICARAGUA - Tags: DRUGS SOCIETY)

A drug addict sniffs glue in a damaged building in the suburb of Managua July 16, 2012. REUTERS/Oswaldo Rivas (NICARAGUA - Tags: DRUGS SOCIETY)

Homeless people sniff glue in Waberi district of Somalia's capital Mogadishu May 14, 2012. REUTERS/Omar Faruk (SOMALIA - Tags: DRUGS SOCIETY POVERTY)

A homeless boy sniffs glue under a bridge in Waberi district of Somalia's capital Mogadishu May 14, 2012. REUTERS/Omar Faruk (SOMALIA - Tags: SOCIETY DRUGS POVERTY)

A homeless boy sniffs glue under a bridge in Waberi district of Somalia's capital Mogadishu May 14, 2012. REUTERS/Omar Faruk (SOMALIA - Tags: SOCIETY DRUGS POVERTY)

A man (R) gestures, as two others take a rest after sniffing glue at the Oriental Market April 16, 2012. The market is considered one of the largest in Central America. REUTERS/Oswaldo Rivas (NICARAGUA - Tags: DRUGS SOCIETY)

A man takes a rest after sniffing glue at the Oriental Market April 16, 2012. The market is considered one of the largest in Central America. REUTERS/Oswaldo Rivas (NICARAGUA - Tags: DRUGS SOCIETY)

A man sniffs glue at the Oriental Market April 16, 2012. The market is considered one of the largest in Central America.REUTERS/Oswaldo Rivas (NICARAGUA - Tags: DRUGS SOCIETY TPX IMAGES OF THE DAY)

A man sniffs glue at the Oriental Market April 16, 2012. The market is considered one of the largest in Central America. REUTERS/Oswaldo Rivas (NICARAGUA - Tags: DRUGS SOCIETY)

Two men sniff glue at the Oriental Market April 16,2012. The market is considered one of the largest in Central America. REUTERS/Oswaldo Rivas (NICARAGUA - Tags: DRUGS SOCIETY)

A vehicle moves past as a man sleeps on a street divider after inhaling adhesive solution in Karachi December 22, 2009. REUTERS/Akhtar Soomro (PAKISTAN - Tags: SOCIETY)

A homeless boy sniffs glue at a beach in Tangier October 9, 2009. More than 10000 homeless minors live on the streets of Morocco according to the Al Jaima association, an association that works with street kids, most of them being victims of drugs and prostitution. REUTERS/Rafael Marchante (MOROCCO SOCIETY)

A homeless boy sniffs glue at a beach in Tangier October 9, 2009. More than 10000 homeless minors live on the streets of Morocco according to the Al Jaima association, an association that works with street kids, most of them being victims of drugs and prostitution. REUTERS/Rafael Marchante (MOROCCO SOCIETY)

Homeless boys share a bottle of glue to sniff at a beach in Tangier October 9, 2009. More than 10000 homeless minors live on the streets of Morocco according to the Al Jaima association, an association that works with street kids, most of them being victims of drugs and prostitution. REUTERS/Rafael Marchante (MOROCCO SOCIETY)

A homeless boy holds up a bottle of glue to sniff at a beach in Tangier October 9, 2009. More than 10000 homeless minors live on the streets of Morocco according to the Al Jaima association, an association that works with street kids, most of them being victims of drugs and prostitution. REUTERS/Rafael Marchante (MOROCCO SOCIETY)

A boy sniffs glue on National Children's Day in Kathmandu September 14, 2009. REUTERS/Gopal Chitrakar (NEPAL SOCIETY)

A teenager sniffs glue to get high inside a slum area compound in Tondo, Metro Manila July 10, 2009. REUTERS/John Javellana (PHILIPPINES SOCIETY)

A homeless girl sniffs glue after a routine check up for flu symptoms at a mobile clinic in downtown Mexico City May 3, 2009. Mexico has moved past the peak of an H1N1 flu epidemic and is in the "phase of descent," the government said on Sunday, although world health officials still say the unpredictable virus could become a pandemic. New cases of the virus, which mixes swine, avian and human flu strains, were still being tracked across the world. REUTERS/Daniel Aguilar (MEXICO SOCIETY HEALTH)

Street children sniff glue by the roadside in Kathmandu October 23, 2008. REUTERS/Gopal Chitrakar (NEPAL)

A teenager sniffs glue along a polluted river in Manila September 25, 2008. REUTERS/John Javellana (PHILIPPINES)

A homeless man holds up glue to sniff on a street in Santo Domingo May 14, 2008. REUTERS/Eduardo Munoz (DOMINICAN REPUBLIC)

A homeless man sniffs glue on a street in Santo Domingo May 14, 2008. REUTERS/Eduardo Munoz (DOMINICAN REPUBLIC)

Children sniff glue inside an impoverished compound in Tondo, Metro Manila May 10, 2008. They said that sniffing glue helped to appease their hunger. REUTERS/John Javellana (PHILIPPINES)

A boy sniffs glue inside an impoverished compound in Tondo, Metro Manila May 10, 2008. He said that sniffing glue helped to appease his hunger. REUTERS/John Javellana (PHILIPPINES)

A young boy inhales glue in Kathamandu's Durbar Square April 4, 2008. REUTERS/Adrees Latif (NEPAL)

A boy smiles as he sniffs glue in the town of Kisumu, 500 km (311 miles) west of Nairobi February 28, 2008. REUTERS/Zohra Bensemra (KENYA)

A boy sniffs glue in the town of Kisumu 500km (311 miles) west of Nairobi February 28, 2008. REUTERS/Zohra Bensemra (KENYA)

Roma children sniff glue through plastic bags to get high in the Macedonian capital of Skopje September 4, 2007. Roma people in Eastern Europe remain marginalised despite an integration initiative backed by the EU, World bank and billionaire George Soros, an NGO said in June, adding binding targets need to be set and met. Two years after several Eastern European states launched a 10-year programme to help millions of Roma gypsies escape discrimination, results are scarce due lack of data on Roma and weak state policies and long-term targets, an assessment report said. REUTERS/Ognen Teofilovski (MACEDONIA) MACEDONIA OUT

A youth sniffs glue at the Oriental Market in Managua June 1, 2007. REUTERS/Oswaldo Rivas (NICARAGUA)

A boy sniffs glue at the Oriental Market in Managua June 1, 2007. Nicaragua commemorates International Children's Day. REUTERS/Oswaldo Rivas (NICARAGUA)

Participants entertain people during the opening of the 2007 World Social Forum in the streets of Nairobi January 20, 2007. Glue-sniffing street-boys, men on camels, and women balancing clay pots on their heads marched from one of Africa's biggest slums at the start of an anti-capitalist fest hosted by the continent for the first time. More than 10,000 people from around the globe descended on the massive Kibera shanty-town home for 800,000 of Kenya's poorest -- to dance, beat drums, chant and wave placards at the kick-off of the seventh annual World Social Forum. REUTERS/Antony Njuguna (KENYA)

Participants hold on to a bronze statue of a pregnant teenager during the opening of 2007 World Social Forum (WSF) in the streets of Nairobi January 20, 2007. The statue's Danish sculptor, Jens Galschiot, said it was a protest against the Catholic Church's stance against contraception. Glue-sniffing street-boys, men on camels, and women balancing clay pots on their heads marched from one of Africa's biggest slums at the start of an anti-capitalist fest hosted by the continent for the first time. More than 10,000 people from around the globe descended on the massive Kibera shanty-town home for 800,000 of Kenya's poorest -- to dance, beat drums, chant and wave placards at the kick-off of the seventh annual World Social Forum. REUTERS/Antony Njuguna (KENYA)

People sing and dance during the opening of the 2007 World Social Forum in the streets of Kenya's capital Nairobi January 20, 2007. Glue-sniffing street-boys, men on camels, and women balancing clay pots on their heads marched from one of Africa's biggest slums at the start of an anti-capitalist fest hosted by the continent for the first time. More than 10,000 people from around the globe descended on the massive Kibera shanty-town home for 800,000 of Kenya's poorest -- to dance, beat drums, chant and wave placards at the kick-off of the seventh annual World Social Forum. REUTERS/Antony Njuguna (KENYA)

A participant rides on a camel during the opening of the 2007 World Social Forum at Kibera slums in Nairobi January 20, 2007. Glue-sniffing street-boys, men on camels, and women balancing clay pots on their heads marched from one of Africa's biggest slums at the start of an anti-capitalist fest hosted by the continent for the first time. More than 10,000 people from around the globe descended on the massive Kibera shanty-town home for 800,000 of Kenya's poorest -- to dance, beat drums, chant and wave placards at the kick-off of the seventh annual World Social Forum. REUTERS/Antony Njuguna (KENYA)

Participants carry a banner during the opening of the 2007 World Social Forum at Kibera slums in Nairobi January 20, 2007. Glue-sniffing street-boys, men on camels, and women balancing clay pots on their heads marched from one of Africa's biggest slums at the start of an anti-capitalist fest hosted by the continent for the first time. More than 10,000 people from around the globe descended on the massive Kibera shanty-town home for 800,000 of Kenya's poorest -- to dance, beat drums, chant and wave placards at the kick-off of the seventh annual World Social Forum. REUTERS/Antony Njuguna (KENYA)

Kenyan women carry cooking pots on their heads during the opening of the 2007 World Social Forum at Kibera slums in Nairobi January 20, 2007. Glue-sniffing street-boys, men on camels, and women balancing clay pots on their heads marched from one of Africa's biggest slums at the start of an anti-capitalist fest hosted by the continent for the first time. More than 10,000 people from around the globe descended on the massive Kibera shanty-town home for 800,000 of Kenya's poorest -- to dance, beat drums, chant and wave placards at the kick-off of the seventh annual World Social Forum. REUTERS/Antony Njuguna (KENYA)

A protestor talks against the U.S. war in Iraq during the opening of the 2007 World Social Forum at Kibera slums in Nairobi January 20, 2007. Glue-sniffing street-boys, men on camels, and women balancing clay pots on their heads marched from one of Africa's biggest slums at the start of an anti-capitalist fest hosted by the continent for the first time. More than 10,000 people from around the globe descended on the massive Kibera shanty-town home for 800,000 of Kenya's poorest -- to dance, beat drums, chant and wave placards at the kick-off of the seventh annual World Social Forum. REUTERS/Antony Njuguna (KENYA)

Participants hold posters during the opening of the 2007 World Social Forum at Kibera slums in Nairobi January 20, 2007. Glue-sniffing street-boys, men on camels, and women balancing clay pots on their heads marched from one of Africa's biggest slums at the start of an anti-capitalist fest hosted by the continent for the first time. More than 10,000 people from around the globe descended on the massive Kibera shanty-town home for 800,000 of Kenya's poorest -- to dance, beat drums, chant and wave placards at the kick-off of the seventh annual World Social Forum. REUTERS/Antony Njuguna (KENYA)

A participant holds a poster of the U.S. President George Bush during the opening of the 2007 World Social Forum at Kibera slums in Nairobi January 20, 2007. Glue-sniffing street-boys, men on camels, and women balancing clay pots on their heads marched from one of Africa's biggest slums at the start of an anti-capitalist fest hosted by the continent for the first time. More than 10,000 people from around the globe descended on the massive Kibera shanty-town home for 800,000 of Kenya's poorest -- to dance, beat drums, chant and wave placards at the kick-off of the seventh annual World Social Forum. REUTERS/Antony Njuguna (KENYA)

A Kenyan parking boy holding a bottle of glue walks during the opening of the 2007 World Social Forum at Kibera slums in Nairobi January 20, 2007. Glue-sniffing street-boys, men on camels, and women balancing clay pots on their heads marched from one of Africa's biggest slums at the start of an anti-capitalist fest hosted by the continent for the first time. More than 10,000 people from around the globe descended on the massive Kibera shanty-town home for 800,000 of Kenya's poorest -- to dance, beat drums, chant and wave placards at the kick-off of the seventh annual World Social Forum. REUTERS/Antony Njuguna (KENYA)

People march during the opening of the 2007 World Social Forum at Kibera slums in Nairobi January 20, 2007. Glue-sniffing street-boys, men on camels, and women balancing clay pots on their heads marched from one of Africa's biggest slums at the start of an anti-capitalist fest hosted by the continent for the first time. More than 10,000 people from around the globe descended on the massive Kibera shanty-town home for 800,000 of Kenya's poorest -- to dance, beat drums, chant and wave placards at the kick-off of the seventh annual World Social Forum. REUTERS/Antony Njuguna (KENYA)

Kenneth Kaunda, former president of Zambia, holds a flag during the opening of the 2007 World Social Forum at Kibera slums in Nairobi January 20, 2007. Glue-sniffing street-boys, men on camels, and women balancing clay pots on their heads marched from one of Africa's biggest slums at the start of an anti-capitalist fest hosted by the continent for the first time. More than 10,000 people from around the globe descended on the massive Kibera shanty-town home for 800,000 of Kenya's poorest -- to dance, beat drums, chant and wave placards at the kick-off of the seventh annual World Social Forum. REUTERS/Antony Njuguna (KENYA)

Abdul Karim, a scruffy-haired boy who is among a fortunate few to have kicked the habit of sniffing glue, sits in a centre of the Azad Foundation and UNICEF in Karachi December 28, 2006. Breathing in fumes from glue-soaked rags and glue-filled plastic bags is a daily ritual of the more than 14,000 street kids who live rough on the streets of Pakistan's biggest city. Picture taken December 28, 2006. To match feature PAKISTAN-STREETCHILDREN/ REUTERS/Athar Hussain (PAKISTAN)

A volunteer teacher interacts with streetchildren at a drop in centre of the Azad Foundation and UNICEF in Pakistan's southern city of Karachi December 28, 2006. Breathing in fumes from glue-soaked rags and glue-filled plastic bags is a daily ritual of the more than 14,000 street kids who live rough on the streets of Pakistan's biggest city. The centre provides shelter, medical help and food to the streetchildren and runs a detoxification programme for those hooked on glue sniffing. Picture taken December 28, 2006. To match feature PAKISTAN-STREETCHILDREN/ REUTERS/Athar Hussain (PAKISTAN)

Fifteen-year-old Akram (R) sits at the Edhi Welfare Centre in Karachi December 28, 2006. Breathing in fumes from glue-soaked rags and glue-filled plastic bags is a daily ritual of the more than 14,000 street kids who live rough on the streets of Pakistan's biggest city. The welfare centre provides shelter, medical help and food to street children and runs a detoxification programme for those hooked on glue sniffing. Picture taken December 28, 2006. To match feature PAKISTAN-STREETCHILDREN/ REUTERS/Athar Hussain (PAKISTAN)

Children sniff glue at Indrachowk, a busy market place in the Nepali capital Kathmandu, September 11, 2006. Children as young as six years old are also seen in several parts of Kathmandu sniffing glue. REUTERS/Gopal Chitrakar (NEPAL)

Children sniff glue at Indrachowk, a busy market place in the Nepali capital Kathmandu, September 11, 2006. Children as young as six years old are also seen in several parts of Kathmandu sniffing glue. REUTERS/Gopal Chitrakar (NEPAL)

A Nepali boy prepares glue for sniffing in an abandoned car near the Bishnumati River in Kathmandu March 12, 2006. REUTERS/Deepa Shrestha

A Nepali street child holds a glue-sniffing bag in the capital Kathmandu February 28, 2006. More than 400 children are reported killed during the ten year conflict between the Maoists and the government in Nepal. REUTERS/Gopal Chitrakar

A Nepali street child holds a glue-sniffing bag in the capital Kathmandu February 28, 2006. More than 400 children are reported killed during the ten year conflict between the Maoists and the government in Nepal. REUTERS/Gopal Chitrakar

A model parades in front of street children, some of whom are sniffing glue, in the drug-infested "Barrio Triste" (Sad Neighborhood) in downtown Medellin in Colombia November 7, 2005. The event was organised to entertain the children by a member of a local charity that helps children in Barrio Triste by providing food, clothes and cleaning facilities. REUTERS/Albeiro Lopera FR051104

A model parades in front of street children, some of whom are sniffing glue, in the drug-infested "Barrio Triste" (Sad Neighborhood) in downtown Medellin in Colombia November 7, 2005. The event was organised to entertain the children by a member of a local charity that helps children in Barrio Triste by providing food, clothes and cleaning facilities. REUTERS/Albeiro Lopera

A model parades in front of street children, some of whom are sniffing glue, in the drug-infested "Barrio Triste" (Sad Neighborhood) in downtown Medellin in Colombia November 7, 2005. The event was organised to entertain the children by a member of a local charity that helps children in Barrio Triste by providing food, clothes and cleaning facilities. REUTERS/Albeiro Lopera Pictures of the Month November 2005

A model parades in front of street children, some of whom are sniffing glue, in the drug-infested "Barrio Triste" (Sad Neighborhood) in downtown Medellin in Colombia November 7, 2005. The event was organised to entertain the children by a member of a local charity that helps children in Barrio Triste by providing food, clothes and cleaning facilities. REUTERS/Albeiro Lopera