What prompted this is the story in tonight's Standard with Khan wanting to block all fast food shops within 400m of schools in London to curb London's child obesity 'epidemic'. Of course there's no evidence linking fast food shop location to obesity levels, but that doesn't stop Khan from drawing the spurious and bigoted conclusion.
"Childhood obesity rates are higher in London than the rest of the country with one in five children classed as very overweight by the time they leave primary school, figures showed today. In eight London boroughs, including Southwark and Westminster, more than a quarter of 11-year-olds are considered obese, while one in ten five-year-olds across the capital are seriously overweight. Medical evidence shows that obese children are more likely to have heart attacks and strokes in later life. Labour mayoral candidate Sadiq Khan, who compiled the figures, set out plans to prevent new fast food outlets opening within 400 metres of schools."See? No evidence of any connection whatsoever. Just 'Kids are fat - close the chip shops'. Stupid, stupid, stupid.
Well, it took a few minutes of searching to find the figures on ethnic variations in obesity - in a Parliamentary research paper.
So London's child obesity rates are almost certainly no worse than anywhere else in England once you equalise for ethnicity.
Resources to tackle child obesity will be far better used if they are targeted where they're most needed. And you also don't need 20/20 vision to notice that black African women are the fattest of all in London - immensely, hugely fat - with all the health risks and shortened life expectancy that goes with it. But until Khan and his kind discard their bigotry and prejudice and use facts and evidence to drive policy, these people will continue to die because Khan is too embarrassed to identify the real problem.