Can I be allowed a big, fat “I told you so?” On my blog, I told you eating low carb was slowing my aging process. Now we have University of California gerontologist Cynthia Kenyon, with an animal study showing exactly that. She’s actually discovered what she calls the Grim Reaper gene, and another she calls the Sweet Sixteen gene. The switch that turns on the former and turns off the latter? Insulin. Which means that by cutting carbs and lowering insulin, you can reverse the process, switching off the Grim Reaper and turning on your Sweet Sixteen. Or at least she can in roundworms.