âIts aim is to manage, maintain, develop and restore the inland navigable waterways in Ireland.â âAnd despite it being a navigable waterway, in the whole day we saw about eight boats.â âSuch commerce on the national scale was made possible by China's system of navigable waterways, partly natural and partly man-made.â
The symptoms caused by food intolerance are varied. They can include general symptoms such as fatigue, joint pains, dark circles under the eyes, night sweats, gastrointestinal symptoms such as diarrhoea and vomiting, bloating, irritable bowel, skin symptoms such as rashes, eczema, and other chronic conditions.
One of the tricky aspects of diagnosing food intolerance is that some people are sensitive not to the food itself but to a substance or ingredient used in the preparation of the food. Common conditions that can cause symptoms mistaken for a food allergy include: 1  Absence of an enzyme needed to fully digest a food.2  You may not have adequate amounts of some enzymes needed to digest certain foods.ommon conditions that can cause symptoms mistaken for a food allergy include: 1  Absence of an enzyme needed to fully digest a food. 2  Food poisoning. 3  Sensitivity to food additives. 4  Histamine toxicity.