Soundlab:As I say, I'm only just starting to look into my diet properly now.
Look carefully at your carb intake too. Not the quantity, but the type.
Fruits, while being preferable to "snacks", contain mostly short-chain sugars so are rapidly assimilated in the gut and cause a similar spike in blood sugar. Eat enough, and you lose the health advantage over confectionery.
Cereals and pulses tend to contain longer-chain sugars (i.e: starch) which take longer to be digested and hence absorbed more slowly.
So choosing foods with a low "glycaemic index" will help, esp if combined with a small, regular meal regime to prevent the significant fluctuations in insulin secretion that can precipitate resistance.
Recently published - my review of BodyPump 73 is available on my blog at:
http://rickinoz.com/2010/03/07/bodypump-73-review
The forum member "pipera" is not a Les Mills Instructor, though his posts, signature and profile will falsely claim otherwise.
Since he has been economical with the truth on his profile, read the real facts here.