It's never harmfull to be careful about what you eat. Eating Vegan is great but do we know what those numbers on food labels mean. For example you could be eating animal feathers or hair if you were eating bread that had the number 910 in the ingredients. If you want to be sure about some products you can always contact the company. I have put two links here to help others, that i found in my own search for safe processed foods. of course a good motto to apply in general would be "Dont eat Numbers" :)Naked Foods are always better.
Vegan Additives to avoid Site.
Dangerous additives site.