If you've been ancestral for more than 6 months, it's probably a true lifestyle by now but many people initially experiment with ancestral eating because of either nutrition or disease issues.

I think it's good to emphasize nutrition, because the competition re: weight loss is both intense and fragmented.

Educating people about sensible nutrition based on science that debunks recent myths would be a powerful step toward better disease management in the future.

Helping people "re-discover" fermented foods, cleaning up our meat and produce supplies and pressuring the food industry to use better preparation/fermentation of grain products are examples of nutrition-related initiatives that would have great leverage for all of us.