Why do you want to study medicine?

A question that you will almost certainly be asked. It is important to have a good answer to this question as while a good answer won't guarantee you a place, a poor answer may well lose you one! There are many possible reasons you could give all of which would be good but it is important to have an answer prepared and to be honest with the interviewer and a clear and concise communication of points is very important (as with answering all questions!). In truth, even most medical students don't really know the answer to this question until they are nearly qualified so examiners won't expect you to have it all figured out. They will expect a well-informed opinion on the reasons you do give, however. 

Everyone will say "I like science and I like helping people" so, while these are good reasons (it's why everyone says them), you need to try and make yourself stand out. A good way to do this is incorporate your work experience or other personal experiences and relate those to why you were interested or why you thought it would suit your skills and in that way, the exact reason why you want to do medicine is personal and probably unique to you. This will also make it clear that you haven’t just ripped off someone else's answer!

Although justifiable reasons, ones to be wary of giving include: Good money - true, but there are much easier jobs where you earn more money.  Because your parents are doctors - perfectly reasonable reason for your interest but you have to make sure you articulate that it is you that wants to do it and not just your parents. Helping people -  again, another good common reason but a follow-up question of "Why not be a nurse then?" should be prepared for