Hello Everyone, My name is Karine and I have just joined the list, although I have read many archives. I started eating Paleo on Jan 1 of this year and have lost 12 pounds so far. I have a lot of energy and have been relieved of GERD and other digestive disurbances. My mother and sister have had similar results and are sold on this WOE. I have struggled with weight my whole life and feel like I have found a real solution, so far. However, my mom and I are both experiencing intense low back pain for the last few days. I wonder if it is a calcium shortage or maybe potassium imbalance due to water loss. Any ideas or common experiences? I appreciate the vast amount of knowledge shared on this list and hope to be an asset to it. Thanks. Karine