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Is whole wheat healthier than white bread? Study suggest it depends on person

The findings could lead to a more rational approach for telling people which foods are a better fit for them, based on their microbiomes or gut bacteria.

Is whole wheat healthier than white bread? Study suggest it depends on person Representational image

New Delhi: A new study suggests that the health benefits of whole wheat bread and processed white bread may vary from one person to another.

The findings could lead to a more rational approach for telling people which foods are a better fit for them, based on their microbiomes or gut bacteria, researchers said.

Despite many studies looking at which bread is the healthiest, it is still not clear what effect bread and differences among bread types have on clinically relevant parameters and on the microbiome.

Researchers from Weizmann Institute of Science in Israel carried out a comprehensive, randomised trial in 20 healthy subjects comparing differences in how white bread and artisanal whole wheat sourdough affect the body.

Surprisingly, the researchers found the bread itself did not greatly affect the participants and that different people reacted differently to the bread.

The team then devised an algorithm to help predict how individuals may respond to the bread in their diets.

Half of the participants were assigned to consume an increased amount of processed, packaged white bread for a week - around 25 per cent of their calories - and half to consume an increased amount of whole wheat sourdough.

After a 2-week period without bread, the diets for the two groups were reversed.

Before the study and throughout the time it was ongoing, many health effects were monitored.

These included wakeup glucose levels; levels of the essential minerals calcium, iron, and magnesium; fat and cholesterol levels; kidney and liver enzymes; and several markers for inflammation and tissue damage.

The researchers also measured the makeup of the participants' microbiomes before, during and after the study.

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