* The industrialized countries of North America and Western Europe have high incidences of cancer, but numbers are rising in Asia and Africa, which have historically had lower incidences.
* Negeri - negeri industri di Amerika Utara dan Eropa Barat memiliki kasus kanker yang tinggi, sementara di Asia dan Afrika, walau selama ini kasusnya lebih rendah, jumlahnya terus meningkat.