Can you suddenly become intolerant to a food as an adult? Learn the common reasons, the foods most often involved, what else it could be and what to do.

Sugar sensitivity can mean bloating after certain sugars or energy dips after sweet food. Learn the signs, sugars to watch and simple ways to cut back.

Citrus intolerance can cause heartburn, a sore mouth or an upset stomach after oranges, lemons or juice. See the likely causes and simple swaps to try.

Almond intolerance symptoms, how they differ from a nut allergy, where almonds hide in food and drink, and easy alternatives for baking, milk and snacks.

Salicylate sensitivity is a reaction to natural chemicals in fruit, herbs, spices, tea and coffee. Learn the signs, high-salicylate foods and what to try.

Dairy intolerance explained: the symptoms people notice, which dairy foods are usually behind them, and practical steps to find the amount that suits you.

Lactose intolerance vs dairy sensitivity: how they differ, symptoms of each, how lactose intolerance is diagnosed and the dairy foods most people manage.

Gluten intolerance symptoms people notice most, from bloating to tiredness and brain fog, plus how to rule out coeliac disease and test it sensibly.

Beef and red meat intolerance: the symptoms, why fat, processing and ageing matter, the alpha-gal allergy to know about, and easy red meat swaps.

Wheat and gluten sensitivity vs coeliac disease: how they differ, why to keep eating gluten until tested, and practical next steps if bread disagrees.