I find there's no good term for someone who is paleo. The most common is to use "paleo" as a noun, as in: "he's a paleo." That works within the paleo community, but will most likely be confused with a political ideology in the outside world. "Paleo dieter" or "eater" specify the context, but they restrict it to nutrition only (whereas paleo also encompasses things like exercise and sunlight). Also, using the word "diet" immediately associates you with the fad weight loss diets.
The best I can come up with is "paleo health adherent", or any good synonym, e.g., "enthusiast", "advocate", "follower", etc. This captures that paleo is a complete long-term lifestyle framework. Still, this is a bit clunky, I wish there was a more concise term.
Any suggestions? How do you describe your health positions?