Just checked my trusty additive book:

950 - Caused cancer and tumours in animal tests
952 (Asmartime) - Linked to many health problems including asthma nausea depressions, hyperactivity and seizures.

Makes you think twice about what you eat!

Rory, I agree, it's a whole lifestyle change. I always end up binging if I deprive myself, so good food in small amounts works for me.