I once read somewhere where Sophia Loren said that she owed everything to spaghetti or something to that effect. I took it to mean that she was healthy and thin because of spaghetti but who knows. Maybe she never said it and I just thought she said it so I could eat lots of spaghetti and not feel guilty about it. Now, I never thought of spaghetti as being unhealthy actually, I always thought spaghetti was one of the healthiest things I could eat (remember that I am a health nut wannabee with good reason). I am not saying that spaghetti is unhealthy necessarily but here is how to tell if your spaghetti is good for you or not (don't worry if you like the unhealthy spaghetti like I do, I have a damage control secret to share with you).
By the way, I found a post at The Fitness Philosopher blog that really helped me get a better grip on nutrition- you might want to check it out. Foolproof Nutrition For Function and Fat Loss.