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Khat, qat:
Catha edulis (khat, qat) is a flowering plant native to the Horn of Africa and the Arabian Peninsula. Among communities from these areas, khat chewing has a history as a social custom dating back thousands of years.Khat contains a monoamine alkaloid called cathinone, an amphetamine-like stimulant, which is said to cause excitement, loss of appetite and euphoria. In 1980, the World Health Organization (WHO) classified it as a drug of abuse that can produce mild-to-moderate psychological dependence (less than tobacco or alcohol), although WHO does not consider khat to be seriously addictive. The plant has been targeted by anti-drug organizations such as the DEA. It is a controlled substance in some countries, such as Canada, Germany, the United Kingdom, and the United States (de facto), while its production, sale, and consumption are legal in other nations, including Djibouti, Ethiopia, Somalia and Yemen.
Khat goes by various traditional names, such as kat, qat, qaad, ghat, chat, tschat, Abessinischer Tee, Abyssinian Tea, Somali Tea, Arabian Tea, and Kafta in its endemic regions of the Horn of Africa and the Arabian Peninsula.In the African Great Lakes region, where Catha edulis is in some areas cultivated, it is known as miraa, muhulo and muirungi. In South Africa, the plant is known as Bushman's Tea. Other names for khat include Chat Tree and Flower of Paradise.
Khat consumption induces mild euphoria and excitement, similar to that conferred by strong coffee. Individuals become very talkative under the influence of the plant. The effects of oral administration of cathinone occur more rapidly than the effects of amphetamine pills; roughly 15 minutes as compared to 30 minutes in amphetamine. Khat can induce manic behaviours and hyperactivity, similar in effects to those produced by amphetamine.The use of khat results in constipation. Dilated pupils (mydriasis) are prominent during khat consumption, reflecting the sympathomimetic effects of the drug, which are also reflected in increased heart rate and blood pressure.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. Khat is an effective anorectic (causes loss of appetite). Long-term use can precipitate: negative impact on liver function, permanent tooth darkening (of a greenish tinge), susceptibility to ulcers, and diminished sex drive.It is unclear if the consumption of khat directly affects the mental health of the user or not. Occasionally, a psychotic episode can result, resembling a hypomanic state in presentation.Wikipedia