Ok, so I'm a nerd
But I'm a nerd with a degree in biochemistry...and I thought ya'll would like some real science the next time someone says "atkins is bad for you." If nothing else, you'll confuse the **** out of them.
The real gem is at the bottom of the link, where it says ketones don't cause problems in normal people.
http://www.np.edu.sg/~dept-bio/bioch.../aab_lipid.htm
On an interesting note, some of the enzymes needed to break down fats in the body are not in high enough supply when we burn sugar for a long time. This certainly explains why we feel like crap for a few days and feel like we NEED sugar. Cause we do! We take a while to get up to speed