'Bang Goes the Theory' investigates whether sugar really deserves such a bad health reputation, in a segment filmed at Queen Mary. Dr Eilola conducted an experiment to show how glucose affects concentration. In an outtake for the Bang Goes the Theory website, Dr Eilola and the show’s presenter suck a natural sugar substitute called miraculin, which is extracted from an African berry, then suck lemons and limes to explore how our taste buds can be fooled into thinking a sour fresh fruit tastes like sweet sherbet (appears at 10 min).