I heard that sugar is not a spice. I decided this was nonsense and so investigated.
A Google search brings this up: http://answers.yahoo.com/question/index?qid=20090321182214AAoIEzK (which also links to Wiki) abut the quote is "Sugar does not add flavor it is strictly for sweetening"
To note, the question suggests that spice can only refers to food. I disagree - you can put mint, vanilla, cinnamon into tea (just to name a few). Give me tea with white sugar or dark sugar (of equal quantities), I can taste a difference.
However, further research then suggested this may not be the case: http://dictionary.reference.com/browse/spice?s=t There is no mention of food or drink! As this is so ambiguous I decided to look else where. Now, I find the Cambridge dictionary: http://dictionary.cambridge.org/dictionary/british/spice_1?q=spice . It states "a substance made from a plant, which is used to give a special flavour to food"
It says food! I say this is wrong. Anything which affects flavour is a spice - although the a debate can rise about mud - I would assume that mud affects flavour but is possibly not described as a spice! Any way, if possible, we'll stay clear of this type of thinking :)
So, further looking into this results in another site http://www.myrecipes.com/how-to/cooking-questions/dark-or-light-brown-sugar-00420000013175/ which states (and I quote) "light brown sugar, which has a less pronounced molasses flavor". Ah, flavor - not just sweetness although molasses is sweet.
So, IMO a spice (which is not going to make 'one' ill) is anything which affects the taste/flavour of food or drink, not just food.
How would I go about changing this definition or arguing it?