sábado, 27 de junio de 2009

Khat- قات (drug)


Khat contains the alkaloid called cathinone, an amphetamine-like stimulant which is said to cause excitement, loss of appetite and euphoria. In 1980 the World Health Organization classified khat as a drug of abuse that can produce mild to moderate psychological dependence. The plant has been targeted by anti-drug organizations like the DEA. It is a controlled/illegal substance in many countries.

-History:

Man consuming khat in Sana'a, Yemen, January 2009It's believed that it is Ethiopian in origin, from where it spread to the hillsides of East Africa and Yemen. Others[who?] believe that khat originated in Yemen before spreading to Ethiopia and nearby countries. Sir Richard Burton explains that khat was introduced to the Yemen from Ethiopia in the 15th century.

-Effects:

Comparison of physical harm and dependence regarding various drugs (the British medical journal The Lancet)Khat consumption induces mild euphoria and excitement. A meta-analysis in The Lancet has stated that khat creates a pleasuring effect to the same degree as ecstasy. Individuals become very talkative under the influence of the drug and may appear to be unrealistic and emotionally unstable. Khat can induce manic behaviors and hyperactivity. Khat is an effective anorectic and its use also results in constipation. Dilated pupils (mydriasis), which are prominent during khat consumption, reflect the sympathomimetic effects of the drug, which are also reflected in increased heart rate and blood pressure. A state of drowsy hallucinations (hypnagogic hallucinations) may result coming down from khat use as well. Withdrawal symptoms that may follow occasional use include mild depression and irritability. Withdrawal symptoms that may follow prolonged khat use include lethargy, mild depression, nightmares, and slight tremor. Long-term use can precipitate the following effects: negative impact on liver function, permanent tooth darkening (of a greenish tinge), susceptibility to ulcers, and diminished sex drive. Those who abuse the drug generally cannot stay without it for more than 4–5 days, feeling tired and having difficulty concentrating.Occasionally a psychosis can result, resembling a hypomanic state in presentation.

-Demographics:

It is estimated that several million people are frequent users of khat. Many of the users originate from countries between Sudan and Madagascar and in the southwestern part of the Arabian Peninsula, especially Yemen. In Yemen, 80% of the males and 45% of the females were found to be khat users who had chewed daily for long periods of their life. The traditional form of khat chewing in Yemen involves only male users; khat chewing by females is less formal and less frequent. In Saudi Arabia, the cultivation and consumption of khat are forbidden, and the ban is strictly enforced. The ban on khat is further supported by the clergy on the grounds that the Qur'an forbids anything that is harmful to the body. In Somalia, 61% of the population reported that they do use khat, 18% report habitual use, and 21% are occasional users.

Researchers estimate that about 70-80% of Yemenis between 16 and 50 years old chew khat, at least on occasion, and it has been estimated that Yemenis spend about 14.6 million person-hours per day chewing khat. The local researcher Ali Al-Zubaidi has estimated that the amount of money spent on khat has increased from 14.6 billion rials in 1990 to 41.2 billion rials in 1995. Researchers have also estimated that families spend about 17% of their income on khat (the real number may be more).

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