When Coca-Cola brought back '90s favourite Surge, it sold out online within hours. And it's not the only 'revival brand' that's been brought back due to nostalgic consumer demand. But what makes a brand re-issue a discontinued product? And what's driving Gen Y's nostalgia trip?

Gen Yers are often described as the most health-conscious generation, whether they're stripping gluten out of their diets or picking locally-farmed produce. But what happens when they become parents? Are Gen Y mums putting similar kinds of food in their kids' lunchboxes?

Chewing gum used to be synonymous with youth in America. It was sexy, glamorous and epitomised a laid-back attitude. But the $4 billion US gum market is down 10% in sales, and this is expected to continue until 2019. So why are Americans spitting out their gum?

The World Health Organization wants to bring sugar consumption down to 26-32 grams a day. Is this really attainable when a single can of cola contains 40g? The road ahead might be long and bitter, but the war against sugar has already started.