Many households prepare extra kneaded dough to save time, but experts caution that this common practice can be harmful. Nutritionists say refrigerated dough undergoes chemical changes that often go unnoticed, affecting both taste and health.

Experts explain that while the refrigerator keeps the dough cool, it cannot fully halt the fermentation process. The yeast continues to work slowly, producing carbon dioxide and acids. This gradual fermentation is why old dough often smells different and tastes slightly sour or bitter.

Bacteria growth and digestive problems

If dough is stored for more than 24 hours, the gluten structure starts to break down due to excessive yeast activity. Weak gluten makes the dough sticky and heavy, resulting in hard, dense bread. Nutritionists warn that such dough can upset the stomach, causing indigestion, acidity, gas, and bloating.

Loss of nutrients over time

Long-stored dough also loses essential vitamins and minerals. Bread made from older dough may still satisfy hunger, but its nutritional value decreases significantly.

Experts highlight that starch in old yeast dough breaks down more quickly.
This rapid breakdown can cause a sudden spike in blood sugar, posing concerns especially for individuals monitoring their glucose levels.

How to store dough more safely

Five expert-recommended tips

Use an airtight container when refrigerating dough.
Apply a thin layer of oil on the dough’s surface to prevent dryness.
Do not leave dough at room temperature for too long—refrigerate immediately after kneading.
Ideally, use refrigerated dough within 24 hours.
For longer use, divide the dough into smaller portions before refrigerating.