While at work last week I was chatting about food - always on the agenda - and he was describing how ill and bloated he feels after eating pasta. He went on to say that even though he feels sick every single time, he still eats it regularly because "It's a treat". It literally takes days for his body to recover.
Food intolerance is actually really common. Allergy UK estimates that up to 45% of people in the UK develop food intolerance, and the incidence of diagnosis is increasing in the younger population.
Unlike the modern day, rich foods in a traditional household would have consisted of sugar, fat, flour and eggs. Now I can't imagine in the 15th century (first records of pancake day and pancake tossing) they cared about intolerances or that a need for gluten and dairy free existed but, fast forward a few hundred years, or a wee bit more, and there is most definitely a need.