The Oscar Fredrik church in Gothenburg adorns the cover of the respected scientific journal “Gut” in February. The reason is an article by among others Kassem Makki at the Wallenberg laboratory that has just been published. The article is about how dietary fibers affect the intestinal bacteria’s ability to produce so-called bile acids and how this in turn affects body weight and metabolism. Here you can read the article: https://doi.org/10.1136/gutjnl-2021-326541