The symptoms of food intolerance vary widely from person to person and can include headaches, fatigue, stomach complaints and skin complaints such as eczema which is quite commonly linked to excess yeast.
My dietician once summed it up to me pretty well, explaining that she as somebody who has no intolerance to milk for example could drink a whole pint of milk with not one symptom whatsoever.
Therefore symptoms can also vary from minor to major from person to person and can also have a delay from the onset of consumption.
This is what I think makes it so difficult for people to recognize as no two persons are the same. What is certain though, is that somebody without an intolerance will experience no symptoms at all which probably means that many more of us are intolerant to foods than we realize. Without wanting to teach anybody how to suck eggs, the main culprits (for me anyway) seem to be gluten, dairy (rather than just lactose), soya and yeast.
Now some of these I can tolerate in small amounts such as yeast and soya, and I’m even starting to reintroduce small bits of cheese back in to my diet. However I tend to avoid gluten at all costs.
As I said everybody is different so your intolerances may vary somewhat from these and you may be intolerant to food substances which I haven’t even listed. However as these are the foods that I am most familiar with avoiding, most of the information on this website will be based on avoiding these products.
Further information however may be gained however, from the general forum from other people.
If you think you have a food intolerance you should approach your doctor straightaway (you are entitled to some alternative health products on the NHS which may help your symptoms).
You are also entitled to see a dietician on the NHS who you may or may not find helpful. They will most likely put you on an elimination diet which lasts about a month (if nothing else you will lose lots of weight!).
However this is pretty restrictive and you have to be quite disciplined.