You don't have to eat low carb to eat primally. Many forum members are eating moderate carbs in the range 100-200 g a day, or even higher if they are muscular men who are very active.
I've lost a lot of weight eating around 150-180 g carbs a day. That's because I've been very active. Mark recommends adding in more starch in line with glycogen burned during exercise for active people. However, a lot of people miss this point when they read PB.
I've gained a lot of muscle in the process. I've recently increased carbs to about 200 g a day and can feel my metabolism increasing. I'm still going into ketosis some days. I can lift heavier, and I have more energy.
Low carb is useful for those who are insulin resistant, for resetting leptin, and for kick-starting weight loss.
I believe that Michelle Waterman is correct about chronic low-carb dieting suppressing thyroid function, especially in women. One confounding factor is if they are chronically cutting overall calorie intake, as that's also known to suppress thyroid function and BMR.
Last edited by paleo-bunny; 05-04-2012 at 04:50 AM.
F 5 ft 3. HW: 196 lbs. Primal SW (May 2011): 182 lbs (42% BF)... W June '12: 160 lbs (29% BF) (UK size 12, US size 8). GW: ~24% BF - have ditched the scales til I fit into a pair of UK size 10 bootcut jeans. Currently aligning towards 'The Perfect Health Diet' having swapped some fat for potatoes.