Mu myaka yashize, ikoreshwa rya kava ryakuweho cyane kubera inyungu zishobora kugabanuka mukugabanya imihangayiko. Noneho, ubushakashatsi bwibanze ku musemburo wa kava bwerekanye ibisubizo bitanga umusaruro bishobora kuganisha ku iterambere ry’imiti ifatika kuri ibi bihe. Ubushakashatsi bwakozwe n'itsinda ry'abahanga bo muri za kaminuza n'ibigo bitandukanye ku isi.

Ubushakashatsi bwibanze ku ngaruka ziterwa na kava kuri neurotransmitter GABA (acide gamma-aminobutyric), igira uruhare runini mu kugenga imyifatire, guhangayika, no guhangayika mu bwonko. Abashakashatsi basanze ibivamo kava byongereye cyane ibikorwa bya GABA kandi bigabanya imyitwarire isa n’amaganya mu nyamaswa zo muri laboratoire.

Ubu bushakashatsi bwerekana ko ibivamo kava bishobora kugira amasezerano nkubundi buryo bwo kuvura abantu bafite ibibazo byo guhangayika. Dr. Susan Lee, umushakashatsi mukuru muri ubwo bushakashatsi yagize ati: "Ibisubizo byacu byerekana ko ikivamo cya kava gishobora guhindura imikorere ya GABA mu bwonko, bigatuma guhangayika bigabanuka no guhangana n’imihangayiko."

Kava ikomoka mu mizi y’igihingwa cya kava, kavukire mu birwa bya pasifika kandi kikaba kimaze ibinyejana byinshi gikoreshwa mu mihango gakondo hagamijwe kwidagadura no guhuza imibereho. Mu myaka yashize, bimaze kumenyekana cyane mubihugu byiburengerazuba nkinyongera karemano yo gukemura ibibazo no guhangayika.

Nubwo igenda ikundwa cyane, haracyari byinshi byo kwiga kubyerekeye inyungu zishobora guterwa na kava. Abashakashatsi bashimangira ko hakenewe ubundi bushakashatsi bw’amavuriro kugira ngo hamenyekane umutekano n’akamaro kiva mu kawa yo kuvura imihangayiko n’impungenge z’abantu.

Mu gusoza, ubu bushakashatsi bwibanze butanga ubumenyi bushya kubyiza bishobora kuvamo kava yo guhangayika no kugabanya amaganya. Mugihe dukomeje gushakisha uburyo bwo kuvura ibintu bisanzwe bivangwa na kava, dushobora umunsi umwe guteza imbere uburyo bwiza kandi bworoshye bwo kuvura ibi bihe bitesha umutwe.

Kubindi bisobanuro kubijyanye na kava ninyungu zishobora kuboneka, nyamuneka sura urubuga cyangwa utwandikire kuri [www.ruiwophytochem.com].