Hi @rosselena, yes, that is true, I never thought this way when I was young and studies at University but now when we see how our parents and relatives get older and need advises and help it is noticeable that this is very useful to have medical background. Despite of that there is still time and topics that even us, medical people need to search a bit for refreshment.Unfortunately our human brain often stores the information that we do not use and often we can not have an easy access to it, but everything comes back once we start reading such information again either in books or Internet.