In a move to tackle obesity, US schools will have to replace junk food with 'smart snacks' like granola bars and fruit cups in 2014-2015. But can deeply ingrained habits really be changed when a new study shows kids are less likely to choose foods they know are good for them?

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.

US employers will be able to use financial rewards and penalties to encourage healthier behaviours, when a 2014 portion of the Affordable Care Act comes into effect. The science of 'behavioural economics' found people tend to respond to incentives.

With people demanding more reliable information about what's in their food, start-up Klappo is creating a database of ingredients and recipes and creating an API for food – powering the development of apps that can help people more easily understand what they're consuming.