Your bones may need calcium, but here's why it's time to moove on from milk

Because of a growing body of research, there is a dawning appreciation that allergy to the proteins in cow’s milk is behind a range of childhood illnesses.

Thanks in no small part to the efforts of the Milk Marketing Board from the 1950s onwards (do you remember “Full of natural goodness”, “Milk’s gotta lotta bottle”, or “Drinka pinta milka day”?) dairy produce enjoys an almost unassailable position in British dietary culture. Milk is seen as vital, an indispensable source of calcium and vitamin D, the foundation stone for healthy teeth and bones.

The health-care professions have been as taken in as anyone; not even evidence implicating dairy in the development of later-life problems such as heart disease has been able to undermine the belief that, for our children to get the best start, they need to be pumped full of cheese and yogurt, all washed down with a glass of nice-coldice- cold milk.

This cultural enthusiasm for dairy led the medical profession into a collective, decades-long blindness. Even today, parents who believe their child to be allergic to milk are likely to be dismissed as oddballs, clutching at improbable straws in an attempt to understand their offspring’s health problems. Dreadful eczema? That’s a skin disease. Intractable abdominal pain and digestive mayhem? There must be something wrong with the gut. Chronic cough and mucous? That’ll be the lungs.

Milk, after all, is what babies are made of. What could be wrong with such a natural, wholesome food? However, because of a growing body of research, there is a dawning appreciation that allergy to the proteins in cow’s milk is behind a range of childhood illnesses.

The journey towards this understanding has been made difficult by several confounding factors. First, there is more than one type of allergic reaction. Immediate hypersensitivity to milk, which is rarer, is easy to diagnose. Directly after exposure to cow’s milk protein, the affected individual displays a florid response, which includes swelling of the lips, face and eyes; a wheeze and breathing difficulty; and a rash called urticaria, which looks like widespread nettle stings.

Much more common in cow’s milk protein allergy (CMPA) is delayed hypersensitivity. This is tricky. There is no clear link in time between exposure and symptoms. These babies tend to have difficult-to-treat eczema, refractory respiratory problems and a range of digestive disorders such as reflux (where acid stomach contents come back into the gullet and mouth), diarrhoea or constipation, colicky pain and even bleeding into the bowel.

We still do not completely understand delayed hypersensitivity and it is likely to be more common than its currently estimated prevalence of around 5 per cent.

Even when delayed hypersensitivity is suspected, there are a number of factors that can frustrate the diagnosis. Unlike immediate hypersensitivity, there is no blood or skin-prick test that can be given. Confirmation can only come from strict exclusion diets, where one would expect symptoms to resolve over a period of between two and eight weeks.

Exclusion diets are hard to stick to. Doctors frequently advise parents to switch to soya-based products, but there is crossreactivity between cow’s milk and soya protein in around 60 per cent of cases. Failure to improve when on a soya-only diet is often mistakenly interpreted as ruling out CMPA.

Another common misconception is that breastfed babies can’t develop CMPA, yet the offending proteins in a dairy-consuming mother will cross into breast milk and provoke allergy in just the same way as with bottle-fed infants.

From an evolutionary perspective, consuming milk beyond babyhood is unnatural, yet all infants depend on milk in their first year or so. Breastfeeding mothers with allergic offspring can go dairyfree but bottle-fed babies are, figuratively speaking, up a gum tree.

Fortunately, there are now a number of formulas available to treat CMPA. In each, the protein components are hydrolysed – chemically “chopped up” into smaller units –which are less likely to provoke an allergic response. But these are very expensive and their growing use is a source of concern to those responsible for NHS prescribing budgets.

A better long-term solution is to encourage and support breastfeeding – currently fewer than a quarter of new mothers are still exclusively breastfeeding at six weeks.

This needs to be coupled with a thorough rethink of our relationship with dairy foods. Even experts in the field of CMPA remain spellbound by the belief that milk is essential for calcium and vitamin D, advising breastfeeding mothers to take artificial supplements if they are cutting out dairy.

But, in reality, milk is a relatively mediocre source of these nutrients. There are innumerable other foodstuffs that carry more calcium than milk – broccoli, figs, almonds, sesame seeds and leafy green vegetables, to name but a few.

As for vitamin D, getting ourselves and our children out into natural sunlight every day is nature’s time-honoured solution. Who knows, we might even inculcate a renewed enthusiasm for fresh air and exercise into the bargain.

Dairy might not be as good for you as you previously thought. Image: Getty

This article first appeared in the 06 November 2013 issue of the New Statesman, Are cities getting too big?

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Harriet Harman: “Theresa May is a woman, but she is no sister”

The former deputy leader of the Labour Party urged women to unite across the divided party.

The day-long women's conference is usually the friendliest place at Labour party conference. Not only does it have a creche and a very clear emphasis on accessibility, but everybody who attends starts from a place of fundamental agreement before the sessions have even begun. For that reason, it's often ignored by political hacks in search of a juicy splits story (especially since it takes place on Saturday, before the "real" conference action really gets underway). But with the party divided and the abuse of women on and off social media a big concern, there was a lot to say.

This year, kick off was delayed because of the announcement of Jeremy Corbyn's victory in the leadership election. The cheer for the renewed leader in the packed women's conference hall was far bigger than that in the main hall, although not everybody was clapping. After a sombre tribute to the murdered Labour MP and former chair of the Labour Women's Network Jo Cox, Harriet Harman took to the stage.

As a long-time campaigner for women's rights, veteran MP and former deputy leader of the Labour Party, Harman is always popular with women's conference - even if her position on the current leadership and her status as a former Blairite minister places her out of sync with some of the audience. Rather than merely introducing the first speaker as the agenda suggested, Harman took the opportunity to make a coded dig at Corbyn by doing a little opposition of her own.

"Theresa May is a woman, but she is no sister," she declared, going on to describe the way that May, as shadow spokesperson for women and equalities under William Hague, had been a "drag anchor" on Harman's own efforts to enact pro-women reforms while Labour were in government. The Thatcher comparison for May is ubiquitous already, but Harman made it specific, saying that like Thatcher, Theresa May is a woman prime minister who is no friend to women.

Harman then turned her attention to internal Labour party affairs, reassuring the assembled women that a divided party didn't have to mean that no advances could be made. She gestured towards the turmoil in Labour in the 1980s, saying that "no matter what positions women were taking elsewhere in the party, we worked together for progress". Her intervention chimes with the recent moves by high profile former frontbenchers like Chuka Umunna and Yvette Cooper to seek select committee positions, and Andy Burnham's campaign to become mayor of Greater Manchester.

Harman's message to women's conference was clear: the time for opposition to Corbyn is over now - we have to live with this leadership, but we can't let the equalities legacy of the Blair years be subsumed in the meantime. She ended by saying that "we have many leaders in the Labour party," pointing to Jess Phillips, the chair of the women's PLP, and Angela Rayner, shadow minister for education, women and equalities. Like Burnham, Cooper et al, Harman has clearly decided that Corbyn can't be unseated, so ways must be found to work around him.

Rayner followed Harman onto the stage. As one of Corbyn's shadow ministerial team, Rayner is far from in agreement with Harman on everything, and rather than speak about any specific policy aims, she addressed women's conference on the subject of her personal journey to the front bench. She described how her mother was "born on the largest council estate in Europe and was one of twelve children" and "never felt loved and didn’t know how to love, because hugs, cuddles and any signs of affection just wasn’t the norm". She went on to say "mum won't mind me saying this - to this day she cannot read and write". Her mother was in the audience, attending her first Labour conference.

As a former care worker who became a mother herself when she was just 16, Rayner is a rarity at the top of Labour politics. She told the Guardian in 2012 that she is used to being underestimated because of her youth, her gender and her northern accent: "I'm a pretty young woman, lots of red hair, and everyone expects me to be stupid when I walk into a meeting for the first time. I'm not stupid and most people know that now, but I still like to be underestimated because it gives me an edge. It gives me a bit of stealth."

The mass shadow cabinet resignations in June propelled Rayner to the top sooner than an MP only elected in 2015 might have expected, and she has yet to really prove her mettle on the grind of parliamentary opposition and policy detail. But if Labour is ever to win back the seats in the north where Ukip and Brexit are now strong, it's the likes of Rayner that will do it. As Harriet Harman herself shows, the women and equalities brief is a good place to start - for even in turbulent, divided times for Labour, women's conference is still a place where people can find common ground.

Caroline Crampton is assistant editor of the New Statesman.