Kola nuts have excessive amounts of N-nitroso compounds which are capable of causing cancer. In Nigeria, where the chewing of kola nuts is very common, there is a high occurrence of oral and gastrointestinal cancers which may be due to this practice. A Food Chemical Toxicology report states, “These data suggest that the possible role of kola nut chewing in human cancer [disease] should be explored in countries where kola nuts are widely consumed as stimulants."

http://www.slimreviews.com/reviews/kola-nut-its-uses-and-effects

as they say in Igboland,The Yorubas grow Kolanuts, the Igbos celebrate it and the Hausas eat it
So my aboki brothers beware

na lie.

What is the half-life of these compounds? Most are very shortlived.

i doubt it.

davidylan:

na lie.

What is the half-life of these compounds? Most are very shortlived.

we are talking about no life and you say half life
betel nuts eaten mostly in south Asia has a carcinogen and the incidence of oral cancers is well documented from that region.
Please stop chewing gworo my brother

it is a lie

cuz nigerians has been dealin with kola since god knows

dont believe it

Mai Suya ,you better warn your northern brethren to stop chewing gworo.

ikeyman00:

it is a lie

cuz nigerians has been dealin with kola since god knows

Superman, this could be why people are dropping dead like flies and blaming it on their neighbors.

This is bogus! where and which lab was this study conducted?

any reported cases to backup these "facts"