Tokyo’s traditional diet

Michiko Ono and Masaru Nishimori are both in their 80s, have never suffered a serious illness and deal with the Japanese capital's city heat better than their interviewer

The Okinawa diet – could it help you live to 100?

Japanese people are more likely to reach 100 years old than anyone else in the world, a fact that some researchers attribute to their diet. So, are they right – and is eating tofu and squid the place to start?

Adding salt to sweet will always be a seller

Emma Sturgess: Concerns about hidden salt levels in biscuits are well founded, but conspicuous consumption in the form of salted caramels has won over fans from Nigella Lawson to Barack Obama