I know I know this, but this is still an alarming chart:

This is saying that, as of 2016, over 36% of Americans were considered to be obese. In Canada, the number was just under 30%. And in the UK, it was just under 28%, which is the highest rate in Europe.

We often talk about the health benefits of living in a walkable community. And there's lots of research to back up that this is in fact the case: obesity rates tend to be inversely correlated with higher prevalences of active transportation (walking, cycling, and so on).

But we also can't ignore diet. And here's what has happened in the UK, as well as in other Western countries:

An increased reliance on cheap, ultra-processed food, which accounts for 57 per cent of what Britons eat according to a 2019 study conducted by researchers at the University of São Paulo, suggests that the health crisis is unlikely to change anytime soon without intervention, argue campaigners.

It can be hard to eat healthy, especially if you don't have a lot of money and you live a busy life. But in my view, we need to change the course of this graph. And two very good places to start looking would be (1) our built environment and (2) the Japanese diet.

Actually, now that I think of it, Japanese cities would be a good place to look as well.

Chart: FT

Last week the Prime Minister of the UK, Rishi Sunak, announced a number of initiatives designed to support drivers. The slogan is "slamming the brakes on anti-motorist measures" and you can find more information about it, over here.

Naturally this is sparking the usual debate about driving vs. all the other forms of mobility. But it also seems to be part of some sort of broader political strategy intended to distance his party from things like environmental sustainability, net zero targets, and 15-minute city design.

If you're looking for a way to process the above announcement, this recent FT article by John Burn-Murdoch is an excellent place to start. Firstly, the UK (outside of London) is generally poorly served by public transport. This is an important thing to know. By the below measure -- percentage of large cities that have trams, a metro, or urban light rail -- it is even worse than the US:

In fact, one way to think about and measure mobility in the UK is to think in terms of the following geographic categories: there's US cities, European cities (including London), and then there's the rest of the UK. In the case of US cities, they have very clearly optimized around road infrastructure. Meaning, the vast majority of people don't take transit to work, but the area (km2) you can cover by car (in 30 mins) is high.

Look at Houston and Dallas on the left side of this graph:

On the other hand, European cities (again, including London) have optimized in the opposite direction. A lot more people walk, cycle, and take transit to work. In the case of cities like London, Paris, Barcelona, Bilbao, Prague, and others, the number is greater than 60%! However, they're sucky places to drive, as I learned this past summer. The area you can cover by car within 30 mins, is relatively low (bottom right of the above graph).

The challenge for British cities (excluding London), is that they seem to be right in the middle (burgundy dots above). Poor public transport (low percentage of trips to work). And poor road infrastructure (limited area accessible by car within 30 mins). So it is perhaps no surprise that Sunak is honing in on this issue. London is not representative of Britain. And based on the above data, the majority of people living in British cities are almost certainly mobility frustrated.

Of course, to correct this issue you have two options. You can move toward the left (in the above chart) and optimize for road infrastructure. Or you can move to the right and optimize for public transport and other forms of mobility. Based on last week's announcement, Sunak has chosen the left.

Charts: FT

There is, of course, part of me that admires what King Charles III has been trying to do in Poundbury (a small master-planned community on the outskirts of Dorchester, England). It is a community that has deliberately rejected the modern suburban in favor of traditional main-street urbanism. It is denser than you'd expect. It has a mix of uses. And it has been generally designed around people, rather than the car.

On the other hand, I could never ever live there:

To live here is to live under Charles’s rules (it is not clear whether William intends to be more flexible). Currently, Poundbury residents are embroiled in a debate about windows: The Duchy says that only wooden sash windows are permitted. Many residents would like to replace theirs with vinyl or fibreglass windows, which are easier to maintain and, crucially, more energy-efficient – and Poundbury is theoretically a ecologically advanced town. So far, the Duchy is not willing to budge.

The last thing I want in my life is someone telling me what kind of windows I can install and what kind of architectural styles are suitable. Messy and organic urbanism suits me just fine.