The events of the last few weeks with the Covid-19 outbreak has affected us all in many ways. Ensuring we have a solid immune system has never been so important. A weakened immune system can make us more vulnerable to a host of nasty viruses like Covid-19. We have seen that those that are affected the worse are those labelled with 'chronic underlying diseases'. These groups are elderly people above 70 years of age, and people with underlying conditions such as hypertension, diabetes, cardiovascular disease, chronic respiratory disease...