The Claim
Refrigeration of boiled rice for up to 120 hours results in a moderate reduction in glycemic index (by approximately 35%) and an increase in resistant starch content, but is associated with greater day-to-day variability in postprandial glucose response compared to prolonged freezing.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Refrigerating boiled rice for up to five days lowers its glycemic index by about 35% and increases resistant starch, but causes more variation in blood sugar levels after eating compared to freezing it for a long time.
See the scientific wording
Refrigeration of boiled rice for up to 120 hours leads to a moderate reduction in glycemic index (by ~35%) and increased resistant starch, but is associated with greater day-to-day variability in postprandial glucose response compared to prolonged freezing.
When cooked rice cools, the starch molecules rearrange into tight, crystal-like structures that digestive enzymes cannot break down. This creates more resistant starch, which slows down how fast sugar enters the blood. When rice is frozen for a long time, these crystals become more uniform and stable, leading to consistent sugar release. When rice is only refrigerated, the crystals form unevenly and change over days, causing unpredictable spikes in blood sugar.
What the research says
1 studyCooling cooked rice for a few days makes it lower in sugar impact but causes unpredictable blood sugar spikes from day to day. Freezing it for longer makes the blood sugar response more stable and consistent.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.