Sadly, Sarah Wollaston seems not to understand the basics here

Sarah Wollaston may indeed be a GP as well as an MP. But she seems not to have grasped the first and most basic thing about the relationship between economic and health inequality:

In her first speech as prime minister, Theresa May promised to tackle the nine-year gap in life expectancy between rich and poor, placing this at the top of her list of burning injustices. This yawning inequality has defeated successive governments, and the gap is even wider between rich and poor for years lived in good health. Closing it will require action across areas such as poverty, housing and education, as well as those more conventionally thought of as affecting health. May will need to start early and look far beyond the short-term political cycle for results.

In that little image above the point is made that analysis is a part of public health. why is such and such happening? This is a larger point as well of course, only when we have worked out what is happening and why can we even dream of trying to do something about whatever it is. Or even decide whether to do something.

And here, looking at lifespans and incomes there's one hugely important point being missed.

It's entirely true that the rich generally live longer than the poor. But why is this? Some part of it is undoubtedly that better diets, less self-destructive behaviour, leads to a long life. But is is also true that chronic illness leads to poverty.

We cannot thus insist that reducing economic inequality will equalise lifespans - simply because it is unequal lifespans and health which is one of the causes of income inequality.

As is so often true both processes are going on at the same time. And until the public health advocates start admitting that we should pay very little attention to them. Simply because they're not being serious.