Monosodium glutamate (MSG) is a flavour enhancer that you’ve likely run across if you’ve ever eaten before. It is found naturally in many foods but it is most famously known as an additive that provides food with a savoury taste. Though MSG has been around since the early twentieth century, in more recent times, its safety has been questioned and it has been built up as a potentially dangerous additive that can cause a whole range of health issues. How much truth is there to that?

Here's everything you need to know about MSG.