In September 2014, research published in The New England Journal of Medicine stated that "like conventional cigarettes, electronic cigarettes may function as a 'gateway drug' that can prime the brain to be more receptive to harder drugs."
8 Kgatiso ya Journal of Clinical Oncology, ya August 1988, e ne ya bega jaana: "Balwetse ba ba tshelwang madi pele ga karo, ba ka feleletsa ba lwala thata go gaisa balwetse ba ba sa tshelwang madi pele ga karo."