Right this second, your immune system is protecting you from all the many potential bugs and foreign particles that can make you sick – bacteria, viruses, fungi, pollen, even food. When you’re healthy, you don’t realise how much work your immune system is doing to keep these nasties away. But if your immune system is out of whack, it can have a huge impact to your health. In this episode, we’re talking with Associate Professor Cindy Ma, who is trying to figure out why disorders of the immune system occur and how they could be treated.