Is Strawberries (Fresh) Safe for Kidney Stones? (Safe)
mg oxalate
per serving
Serving: 1 cup, halves (150 g)
Verdict: 🟢 Safe
Per 100g: 4 mg
Data: Harvard T.H. Chan SPH (2024)
In practical terms, Strawberries (Fresh) is a low-risk food for kidney stone patients. Its 6 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.
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. Strawberries (Fresh) comes in at 6 mg oxalate per 1 cup, halves (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. Strawberries (Fresh) comes in at 6 mg oxalate per 1 cup, halves (Safe) in the measured database.
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, Strawberries (Fresh) measures 6 mg per 1 cup, halves, rated 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. Strawberries (Fresh) comes in at 6 mg oxalate per 1 cup, halves (Safe) in the measured database.