How much protein is too much?

Sales of cottage cheese are booming thanks to a boost from
protein-hungry social media influencers. But do we really need all
this extra protein? Madeleine Finlay speaks to Joanne Slavin, a
professor of food science and nutrition at the University of
Minnesota, to find out what exactly protein is doing in our bodies,
and what happens to it when we consume it in excess. Help support
our independent journalism at theguardian.com/sciencepod