I read this via the publisher and NetGalley. It’s out in April 2023.

This is an angry book.

I’m not saying that’s a bad thing, or that the anger is unjustified. Just that Mendelson doesn’t make much effort to hide the fact that a lot about Big Dairy in America makes her angry, and that the appalling lack of science around the claims for milk make her angry, and that the fact drinking milk is pushed as some mighty panacea when actually the ability to digest cow’s milk as an adult human is largely restricted to humans descended from north-west Europeans… that makes her angry, too.

Some of the most crucial sentences for understanding the point of the book comes early on: “… the founders of modern Western medicine had no way of understanding the genetic fluke that allowed them… to digest lactose from babyhood to old age… That lack turned the one form of milk that is most fragile, perishable, difficult to produce on a commercial scale, and economically pitfall-strewn into a supposed daily necessity for children and, to a lesser extent, adults.”

Yeah.

The section I most enjoyed for itself was the first part, where Mendelson looks at the long history of dairying, and in particular points out that drinking “fresh” milk (which is a whole other discussion of terminology, given what happens to milk in most Western countries today) wasn’t something early herders did. Instead, they were using fermented milk – naturally fermented, from being left out in the heat. She goes through the science of what’s actually happening in this fermentation, discussing why the bacteria in the milk doing all of this doesn’t poison human consumers of such milk. There’s also a really interesting discussion about the archaeology and other evidence for dairying of various forms in numerous locations.

Science is a fairly big part of the book, which I also enjoyed. There’s a lot about what’s in milk of various types, and why, as well as how that’s connected to the digestive system of the various animals that humans choose to milk. Plus the discussion about how limited the ability to actually properly digest full-lactose drinking-milk is, among the adult human population. If you can digest milk as an adult, it’s you that’s the genetic mutation, not everyone else. Doesn’t that make all the soy milk etc-haters look like numpties.

The angry-making bit really starts when the discussion turns to the 18th century in Europe, and the way that ‘drinking fresh milk’ suddenly became imperative for children, in particular, and the idea that if children were denied all the milk they could possibly consume then somehow society was failing them. All of which is nonsense since… see above. And then, of course, it gets into how the industry makes claims, and medical types get on board, and honestly it just makes me really sad and horrified to see how outlandish claims based on ‘science’ (sometimes) that has now been superseded, or sometimes just based on a desire to make money, is still having a massive impact on how we think and act today.

Also? this insistence on drinking-milk all came as a) more people were living in towns and b) before good refrigeration and c) before adequate food-safety measures like pasteurisation (which gets a whole section here, because of the raw food movement) were in place. All of which meant a bunch of kids, in particular, actually got sick and many of them died because of the milk they were told they needed to consume in order to be healthy.

One of the reasons for the angry nature of the book is its focus on the modern American dairy industry. I’m not going to claim that the Australian industry is immensely better, because I don’t know all that much about it, but I do know that we do things a bit differently. And then there’s the way in which drinking-milk is still being pushed as necessary… to populations that are, overwhelmingly, unable to digest full-lactose milk as adults. I think that’s just appalling.

Don’t read this as a fun history or science of milk. Do read it if you’re interested in how drinking-milk got to be the thing it is today – which is genuinely fascinating, as well as infuriating. There’s discussion of Kellogg’s, and milk-drinking cults, and the furore around pasteurisation and homogenisation, and the raw milk fad as well…