Overview
- Sourdough can have a lower glycaemic index than standard white bread, which may help some people with diabetes manage blood sugar.
- Because most sourdough is made with white flour, it typically provides less fibre than wholegrain or wholemeal bread.
- The British Heart Foundation warns that bread is a major salt source and that bakery loaves, including some sourdoughs, can be saltier than supermarket versions.
- Claims that sourdough improves gut health are overstated because baking destroys the live yeasts and bacteria.
- For a healthier choice, the BHF recommends wholemeal bread, a wholemeal sourdough where available, or baking at home to control salt content.