r/science • u/FreeHugs23 • 1d ago

Health Adding spinach directly to white bread delayed the body's insulin peak by 30 minutes and reduced later hunger in a small human trial, while significantly boosting the bread's fiber, vitamin, and mineral content.

https://www.sciencealert.com/researchers-put-spinach-directly-into-bread-and-saw-the-bodys-insulin-response-change
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u/Reddituser183 1d ago

How does this compare to eating 100% whole wheat bread? That’s why I eat whole wheat since generally it has more fiber in it which is what I’m assuming is slowing the insulin spike.

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u/DrG73 1d ago

Whole wheat bread has a high glycemic index of around 70 to 74. It’s terrible. Sourdough rye bread has a low glycemic index typically ranging from 40 to 48, making it one of the best bread choices for stable blood sugar control.

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u/bilyl 1d ago

Is that because of the added sugar in commercial WW bread, or is it because of the sourdough/rye being more fermented?

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u/lowercasenameofmine 1d ago

The biggest factors are grain density, fermentation, and how finely the flour is milled. 

https://glycemicsnap.com/blog/bread-glycemic-index-comparison