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If you can only make one dietary change to have the greatest benefit to your health it may simply be to avoid processed foods. The best advice might be that if our grandparents didn't eat it, we shouldn't.
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Scientists know that the trillions of bacteria and other microbes that live in our guts play an important role in health, influencing our risk of developing obesity, heart disease, Type 2 diabetes and a wide range of other conditions. But now a large new international study has found that the composition of these microorganisms, collectively known as our microbiomes, is largely shaped by what we eat.
By analyzing the diets, health and microbiomes of more than a thousand people, researchers found that a diet rich in nutrient-dense, whole foods supported the growth of beneficial microbes that promoted good health. But eating a diet full of highly processed foods with added sugars, salt and other additives had the opposite effect, promoting gut microbes that were linked to worse cardiovascular and metabolic health.
The researchers found that what people ate had a more powerful impact on the makeup of their microbiomes than their genes.
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