I get organic chia seeds from iHerb for my mother. She's old & a vegetarian & needs foods that are nutritionally packed.
Other foods people should consider are Spirulina & Chlorella
I used to take spirulina and chlorella. But I found a more powerful superfood which is also a blue green algae. I have since stopped taking spirulina, chorella, chiaseeds, noni, wheatgrass, etc
This one superfood is enough for all my needs. How do I know? My energy level is up, cataracts gone, chronic pain disappeared, growing taller, etc