BioSpace reviewed some of the more interesting scientific studies recently published, including research into a potential cause of Alzheimer’s disease and how deleting dysfunctional fat cells could alleviate diabetes.

A new study shows the persistent syndrome of Covid-19 after-effects known as long Covid can develop after “breakthrough” infections in vaccinated people. Other new findings suggest a gene that helps the coronavirus reproduce itself might contribute to life-threatening Covid-19 in young, otherwise healthy people.

A new study by researchers at the University College London (UCL) published in Lancet Infectious Diseases finds that although the U.K. variant of SARS-CoV-2 known as B.1.1.7 is more transmissible than the wild-type, original Wuhan strain, it is likely not more deadly.