They make your breath stink, sometimes for hours on end. Nobody will go near you if you eat one, and you can certainly forget about trying to pull. And you'll be very unpopular on the tube in the middle of the rush hour. You merely smell of onions and mint at the same time. All this does is perpetuate Wrigley's monopoly on the world chewing gum market.
Onions are amongst the most common high-fibre foods, which include beans, cabbage and turnips.
They are gas-producers, i.e. they make you fart. Phillips A motto for the Millennium, if ever there was one. They cause red blood cells to become unable to function properly, thus causing them to rupture. Weakness, depression, rapid heart rate, rapid respiratory rate, decreased appetite, vomiting and diarrhoea may occur. They can also cause madness in monkeys.