> 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.

Great! Welcome to this list Karine!

> 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?

Could be electrolyte imbalance esp. if you are following low carb paleo.
Shortage of potassium leaves you weak and tired. Tuna fish has a lot of
potassium in it...

--Richard