Is Escarole Safe for Kidney Stones? (Safe)
mg oxalate
per serving
Serving: 1 cup, chopped (40 g)
Verdict: 🟢 Safe
Per 100g: 6 mg
Data: Harvard T.H. Chan SPH (2024)
Here's the takeaway: Escarole earns a Safe rating (🟢) at 2 mg oxalate per serving. Being under 25 mg means it fits comfortably in everyday eating. Keep your usual habits — adequate fluids and calcium in meals — and Escarole poses no special concern.
Putting Escarole in context: it lands well below the category average of 27 mg. In the database, 80% of vegetables (219 of 271) fall in the 🟢 Safe group (under 25 mg oxalate/serving). The typical vegetables here averages 27 mg oxalate per serving, so Escarole runs 93% below that baseline. That places it among the lower-oxalate options in its category. Why this matters: the gap between two Safe foods can be wide — one may hold 5 mg oxalate while another sits at 24 mg. The lower one leaves more room in your day. See all vegetables rated Safe for a full side-by-side.
Why does the safe threshold matter?
The 25 mg cutoff comes from clinical guidance for stone formers. Below it, a food's oxalate contribution is small enough not to move the needle for most patients. Harvard's 2024 lab data sits behind these figures — direct measurements, not estimates. For Escarole, the measured oxalate value is 2 mg per 1 cup, chopped (Safe).
Can I eat this food every day?
Daily eating is fine for Safe foods (under 25 mg/serving). For Caution or Avoid foods, spread them out and alternate with low-oxalate picks. The idea is keeping your weekly oxalate load manageable, not eliminating any single food. Applied to Escarole: 2 mg oxalate per 1 cup, chopped — Safe per Harvard (2024).
Where does the oxalate data come from?
Every oxalate figure is sourced from Harvard T.H. Chan SPH (2024), distributed via the OHF database. The values come from actual lab measurements of the foods — not from database averages or estimates. For context, Escarole measures 2 mg per 1 cup, chopped, rated Safe.
Should I also check sodium and calcium?
Yes — kidney stone risk isn't just about oxalate. High sodium increases urinary calcium (a stone promoter). Adequate dietary calcium (from food, not supplements) actually binds oxalate in your gut. Check the food's full nutrition page for the complete picture. Escarole comes in at 2 mg oxalate per 1 cup, chopped (Safe) in the measured database.