I think they can be a nice addition to an otherwise healthy diet, although they are not an end-all-be-all solution. I often add things like spirulina powder or alkaline greens to some of my smoothies or lemon water. Super high in vitamins to support immune function and digestive health.

Great resource: https://www.healthline.com/nutrition/super-greens#benefits

I use green powders as a enhancement not necessarily as a vegetable replacement. I think of it as insurance for minerals etc. I use a variety including blue green algae and seaweed for extra iodine. Spirulina also has protein and beta carotene which is nice.

(Blue green algae in chia pudding - awesome! )

Re:bioavailability - Depends on the green powder. I’ve read tests that say a powder such as Chlorella has good absorption of C, beta carotene, lycopene etc.. I like doing a mixture and make sure it’s been purity tested for lead and heavy metals.

A read for green powders and nutrition -
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5387034/

@ladyzherra @sarebearr @trunkmonkey1977 reminding me to drink my greens! 🤗