I am one of the low carb folks. I aviod processed starch and potatos like the pleague. I only eat lots of carbs when I am riding or going to ride. I keep my glycemic index low, don't worry about fats, exersize regularly and take vitamin suplaments.
I'm a med tech and have been keeping up with my lipid levels over the last year since I started this life style. My Triglyceride levels have droped by 1/2 my Cholestorl has droped about 20% and my HDL levels continue to climb, probly due to the exersize, and I feel great.

I have lost 50lbs this way.

BTW I eat lot's of low carb vegies and some fruit.
I also don't get hungry on a regular basis like I did before. I think the massive consumption of simple carbs, starch and sugar, is the number 1 reason for the number of new dibetics that spring forth every year. Just like an alcoholic abusing there liver with excesive amounts of toxins, the life style millins of americans are living is killing their pancreas.

Don't get me wrong. Carbs are the energy source as long as there is a fire to feed, but in excess they hurt you if you don't burn them.