The discovery may explain why once rare immune disorders have become so common in the West over the past 50 years, study leader Professor Eugene Chang said.
He said this was the first mechanism that showed how western-style diets contributed to the rapid increase in IBD.
Tests carried out by the scientists have shown that milk fat – which is abundant in processed foods and confectionery – alters the composition of bacteria in the gut.
So it isn't supposed to be an anti-milk .... or an anti natural products derived from milk thing .... rather how those "milk-fats" have got into highly processed foods in high concentrations over the last 50 years and could be explaining the rise in things like IBS .... so rather like theories as to why the increase in highly processed carbohydrates maybe causing diabetes over a similar time frame .... Like all research of this nature you have to take a view on the risks you are taking.
Any theory that says milk or natural products derived from it are bad would have to account for why there has only been a recent increase as people have consumed things made from milk for thousands of years.