The dark truth about protein shakes: Doctors reveal the deadly health problems they can cause for your body – and how they may not even make you build muscle

Protein is having a moment, with supermarket and health store shelves groaning under the weight of shakes and bars. It’s estimated that one in ten people in the UK eats a protein bar once a week. Protein is having a moment, with supermarket and health store shelves groaning under the weight of shakes and bars. It’s estimated that one in ten people in the UK eats a protein bar once a week.