According to a Northumbria University academic, humans are attracted to plant based substances such as tea, tobacco and drugs because our brains are similar to those of insects.
Professor David Kennedy has written a book showing how human brains are just a more complex version of those of insects.
More top news
Kerrie Gosney brings you Sunday night's forecast
Sunday snow will ease but a severe frost and risk of ice into Monday morning
Fire crews were called to the old Wesley nightclub on Victoria Road on Saturday evening. No one is believed to be injured