https://www.medicinenet.com/diet_nutrition_health_benefits_of_spinach/article.htm?ecd=mnl_spc_071823

2 special things I want to stress:

Twice a week, spinach with 2 eggs can /may prevent serious eye problems [macular degeneration!]

When I wrote about Portulaca, I wrote discovered that next to Portulaca, spinach was one of the richest sources of Glutathione!! [thanks to James Duke z“”l, one of the world’s top botanists of the past. It is, therefore, also a first choice for Covid/flu, but not good to eat it every day.

See this excellent article for more about spinach.

Try by all means to get pesticide-free spinach!!

According to the Environmental Working Group (EWG), spinach has more pesticide residue by weight than other produce tested.
USDA samples have shown that spinach contains up to 16 pesticides and metabolites of pesticides.
The EWG expressed concern that about 71% of spinach samples contained some form of permethrin, a pesticide banned in the EU.