Is Zucchini (Raw) Safe for Kidney Stones? (Safe)
mg oxalate
per serving
Serving: 1 cup sliced (113 g)
Verdict: 🟢 Safe
Per 100g: 0.9 mg
Data: Harvard T.H. Chan SPH (2024)
In practical terms, Zucchini (Raw) is a low-risk food for kidney stone patients. Its 1 mg oxalate per serving stays under the 25 mg line, so it can appear in your regular rotation without extra calculation. As always, staying hydrated and getting dietary calcium supports stone prevention.
Among vegetables, Zucchini (Raw) sits well below the category average of 27 mg. For context, 219 out of 271 vegetables (80%) are rated 🟢 Safe (under 25 mg oxalate/serving). The average vegetables in our database has 27 mg oxalate per serving — which means Zucchini (Raw) is 97% below the category norm. Within its specific category, Zucchini (Raw) ranks among the lower-oxalate options. This context matters because two 'Safe' foods can have very different oxalate levels — one might have 5 mg while another has 24 mg. Both are Safe, but the first gives you more dietary flexibility. Browse all vegetables rated Safe to compare within the same verdict level.
Why does the safe threshold matter?
The 25 mg line is the reference point clinicians use to separate everyday foods from ones that need caution. Every value on this page traces back to Harvard's 2024 lab analysis, so the threshold is applied to measured data rather than estimates. Zucchini (Raw) comes in at 1 mg oxalate per 1 cup sliced (Safe) in the measured database.
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. For context, Zucchini (Raw) measures 1 mg per 1 cup sliced, rated Safe.
Where does the oxalate data come from?
Harvard T.H. Chan School of Public Health (2024) via the OHF database. These are direct laboratory measurements — the most reliable oxalate data available for food. For Zucchini (Raw), the measured oxalate value is 1 mg per 1 cup sliced (Safe).
Should I also check sodium and calcium?
Yes — oxalate alone doesn't decide stone risk. Sodium pushes more calcium into urine, and calcium from food (not supplements) helps bind oxalate during digestion. The main food page covers sodium and calcium alongside oxalate. Zucchini (Raw) comes in at 1 mg oxalate per 1 cup sliced (Safe) in the measured database.