Short answer: spinach is one of the most alkaline-forming foods there is — and it is not on Dr. Sebi’s approved list. Of every food in this series, this is the widest gap between what the framework says and what the measurements show.
The numbers
Cooked spinach measures around pH 6.60 to 6.80, close to neutral. Raw runs a little lower.
Its PRAL is −14.0. For scale: broccoli is −1.2, kale is −8.3, cucumber is −0.8. Spinach is in a different league, driven by an unusually high potassium and magnesium content.
Is spinach Dr. Sebi approved?
No. It appears on no reproduction of the approved list and is commonly named among vegetables to avoid.
No itemised reason is published for spinach specifically. Like sweet potato and garlic, it is excluded under the closed-list rule rather than by any stated argument.
The honest note
If the goal of eating alkaline is to reduce the acid load your kidneys process, spinach is close to the most effective food available. Excluding it is difficult to justify on those grounds.
There is a real reason to moderate spinach, but it has nothing to do with this framework: spinach is high in oxalates, which matter if you are prone to calcium-oxalate kidney stones. That is a specific, evidenced consideration worth raising with a doctor — and it applies whether or not you follow Dr. Sebi.
What to use instead
- Amaranth greens (callaloo) — approved, closest match cooked, and lower in oxalates.
- Kale — approved, sturdier, strongly alkaline-forming in its own right.
- Watercress, turnip greens, purslane — all approved and all leafy.
One thing worth being straight about
None of this changes the pH of your blood. Your lungs and kidneys hold it between 7.35 and 7.45 whatever you eat — a reading outside that range is a medical emergency, not a dietary outcome. What food shifts is urine pH, which is your kidneys processing the acid load from your meal. That is the honest extent of what PRAL tells you.
Common questions
Is spinach acidic?
No. It is near-neutral as a food and strongly alkaline-forming after digestion.
Why is spinach excluded?
It is not named on the list, and the list is closed. No published reasoning addresses it directly.
Does cooking change it?
Cooking reduces oxalate content somewhat and concentrates the minerals. The direction of the PRAL does not change.
Related
- Is avocado alkaline or acidic?
- Is rice alkaline or acidic?
- Is broccoli alkaline, and why isn’t it approved?
- Are mushrooms alkaline or acidic?
- The complete approved food list
Surprised by an exclusion? The Ackaline app scans any food and tells you whether it’s approved — free to download. The full list with the reasoning is in The Alkaline Healing Blueprint.
For education, not medical advice. Talk to your doctor before making significant changes to how you eat.
