The consumption of additives contained in our food and products is know to cause a wide array of health issues.  Reactions can vary from person to person and have an accumulative affect  by destabilising the immune system and the increasing the toxic load in our bodies. Try and avoid the following if you are looking for optimum health:

Artificial Colours
102, 107, 110, 122-129, 132, 133,
142, 151, 155, 160b (annatto)

Preservatives
Sorbates 200-203
Benzoates 210-213
Sulphites 220-228
Nitrates, nitrites 249-252
Propionates 280-283
Whey powder in bread
Antioxidants:
Gallates 310-312
TBHQ, BHA, BHT 319-321

Flavour Enhancers
Glutamates md MSG 620-625
Disodium guanylate 627
Disodium inosinate 631
Ribonucleotides 635
Hydrolysed Vegetable Protein (HVP)

All Artificial Flavours