THE EXPERTS
DR JENNA MACCIOCHI is an immunologist, lecturer at Sussex University and author of Immunity: The Science of Staying Well (Harper Non Fiction, £13.49).
DR CHRIS ETHERIDGE is a leading medical herbalist and Chair of the British Herbal Medicine Association.
DR ALAN WATKINS is an immunologist and lecturer in neuroscience and psychological medicine.
Most of us don’t give our immune system much thought unless we’re feeling run down. But this doesn’t change the fact that it’s working constantly to protect us from invaders of all kinds. Your immune system is actually a network of organs, including the spleen and lymph nodes, cells, proteins and tissues throughout your body. Its job is to be vigilant for foreign invaders - such as viruses or bacteria - and attack any it detects, as well as removing dead tissue from the body. So how do you keep it in prime condition?