The microscopic organisms living in our intestines may influence the severity of Covid-19 and the body’s immune response to it, and could account for lingering symptoms, researchers reported.

A review of some recently published scientific studies includes one for antihistamines and similar compounds that might slow down Huntington’s disease.

Every week there are numerous scientific studies published, and here is a look at some of the more interesting ones, including using gut bacteria to prevent and reverse food allergies.