What do home faecal test kits really reveal about our gut microbiome?
Many firms sell direct-to-consumer faecal testing kits, but an investigation has revealed that scientists don't yet know what makes for a healthy gut microbiome
![What do home faecal test kits really reveal about our gut microbiome?](https://images.newscientist.com/wp-content/uploads/2024/03/14161016/SEI_195998227.jpg)
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