You don't have to be young to work in Silicon Valley – but it certainly helps. Which is why the over-30s are now taking extreme measures, says Jon Henley
Joanna Blythman: Eggs and red meat have both been on the nutritional hit list – but after a major study last week dismissed a link between fats and heart disease, is it time for a complete rethink?
From blueberries to nuts and whole grains, antioxidant-rich miracle foods were, we were told a decade ago, the key to combating stress, disease and infection. But, inevitably perhaps, experts' opinions have now shifted to a more complex view