This has become easier since the Allergy Society fought for food labelling to be improved dramatically. One thing both sides of the allergy controversy do agree on is that food and our environment have a lot to do with the upsurge. But from there on, both sides differ markedly. We can survive on poor nutrition without becoming obviously ill, but without functioning at our best. Most of us are halfway - barely recognisably, slightly ill.
Many people take supplements in case their diet is deficient.
The immune, digestive and lymphatic systems may be so overloaded with toxins that they're like a bucket that's full to the brim - one more drop and it will overflow. The results are eczema, asthma, nasal congestion and so on. Sulphur is one of the victims of modern food processing and cooking. According to the US Patent, granted in 1981, too low a concentration of MSM in the body results in physical and psychological stress, fatigue and increased susceptibility to diseases. Among the many claims made for MSM is that it controls allergic responses to foreign proteins, including pollen and food.