Scientists know that more than 90% of serotonin is produced in the gut – but how does what you eat affect your mood? Studies have found that people with depression and people who sleep poorly ...

However, much more research is required to be certain of their role in keeping us healthy. What you eat isn't just nutrition for you, it also feeds the trillions of bacteria that live in your gut.

A decade ago the city’s dining landscape was littered with all-you-can-eat places. Usually couched as buffets, they allowed patrons to line up and pass by a dozen or more heated tubs ...