Nutrition Facts and Analysis for Seeds, chia seeds, dried Nutrition Facts and Analysis for Seeds, flaxseed
Curious why you think chia is healthier than flax? The comparisons at this website seem to give flax the edge, and it is cheaper. I have nothing against the chia seeds, seriously plan to try them soon, but not likely to give up my flax.
(To use the links to compare, make sure to adjust to the same measurements. One of them wouldn't stay adjusted for me to save the link.)
Flax is slightly higher in protein, lower in 'glycemic load' and is moderately anti-inflammatory, where chia is mildly anti-inflammatory.
I hear chia has the advantage of not needing to be ground, which would surely be a plus. Does it swell if you cook it, somewhat like tapioca? I liked using quinoa as a sub for rice in rice pudding, and would love it if chia would reproduce the 'pearl' effect. Seriously I do plan on trying it soon.