The hygiene hypothesis proposes that the increase in allergic diseases, including asthma, atopic dermatitis, and atopic rhinitis in many developed countries is through the lack of early exposure to bacteria
Certain people have sensitivity to things in the environment and to the foods they eat - This sensitivity triggers a dilation of blood vessels in the nose, and sometimes releases chemicals from cells in the nose that cause swelling.
GM Soy
- GM soy reduces digestive enzymes in mice. If proteins "digest"slowly in humans, there is more time for allergic reactions (possibly to many food proteins).
- Farmers use nearly double the amount of herbicide on GM soy compared to non-GM soy. Higher herbicide residues might cause reactions.
Hair dyes are a common cause of itching and skin rash
- Para-diamine (PPD). Although you can develop an allergy to many ingredients in hair coloring, the chemical PPD is the most likely culprit. PPD has been a major component of most hair-coloring products used in the western world since the 1880s and has caused problems almost since it was first developed, according to the American Contact Dermatitis Society--which named PPD as its "allergen of the year" in 2006. Because of its potential to cause an allergic reaction, PPD was banned in Sweden, France and Germany for most of the last century (it re-entered the market after the formation of the European Union). PPD remains popular as a permanent dye because it produces a natural color that doesn't fade with shampooing.
