Nanoparticles lie at the heart of a new method for delivering medicines inside the body – and they were crucial to the success of the Covid-19 mRNA vaccines. This new drug delivery method and others could transform the way we treat disease, potentially boosting the treatment of Alzheimer's, Parkinson's and HIV, among others. Insulin and Covid-19 vaccines might even become available as pills. In this podcast, we’ll look into new drug delivery methods that could simplify the way we treat diseases such as Alzheimer’s or Parkinson’s.