By Dolly van Tulleken As the longest-serving health secretary since the formation of the NHS, Jeremy Hunt is perfectly primed to tackle our poor diets in the upcoming Spring Budget, writes Dr Dolly van Tulleken As you read this, the Chancellor is likely to be whittling down his list of policy options before the Spring Budget in five weeks. And as the longest-serving health secretary since the NHS was established in 1948, Jeremy Hunt is well aware of the economic consequences of low productivity and inactivity. Poor health is bad for business and bad for the economy. Winston Churchill once said…