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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Douglas Carswell leaves Ukip to become independent MP

The Clacton MP quits his party but insists he will not rejoin the Conservatives or trigger a by-election. 

Douglas Carswell has long been a Ukip MP in name only. Now he isn't even that. Ukip's sole MP, who defected from the Conservatives in 2014, has announced that he is leaving the party.

Carswell's announcement comes as no great surprise. He has long endured a comically antagonistic relationship with Nigel Farage, who last month demanded his expulsion for the sin of failing to aid his knighthood bid. The Clacton MP's ambition to transform Ukip into a libertarian force, rather than a reactionary one, predictably failed. With the party now often polling in single figures, below the Liberal Democrats, the MP has left a sinking ship (taking £217,000 of opposition funding or "short money" with him). As Carswell acknowledges in his statement, Brexit has deprieved Ukip of its raison d'être.

He writes: "Ukip might not have managed to win many seats in Parliament, but in a way we are the most successful political party in Britain ever. We have achieved what we were established to do – and in doing so we have changed the course of our country's history for the better. Make no mistake; we would not be leaving the EU if it was not for Ukip – and for those remarkable people who founded, supported and sustained our party over that period.

"Our party has prevailed thanks to the heroic efforts of Ukip party members and supporters. You ensured we got a referendum. With your street stalls and leafleting, you helped Vote Leave win the referendum. You should all be given medals for what you helped make happen – and face the future with optimism.

"Like many of you, I switched to Ukip because I desperately wanted us to leave the EU. Now we can be certain that that is going to happen, I have decided that I will be leaving Ukip."

Though Ukip could yet recover if Theresa May disappoints anti-immigration voters, that's not a path that the pro-migration Carswell would wish to pursue. He insists that he has no intention of returning to the Conservatives (and will not trigger a new by-election). "I will simply be the Member of Parliament for Clacton, sitting as an independent."

Carswell's erstwhile Conservative colleagues will no doubt delight in reminding him that he was warned.  

George Eaton is political editor of the New Statesman.