I'll second the recommendation for bioengineering, that's exactly the field you're describing.
However, you might find at the undergraduate level that you'd be better off studying something that will get you a very solid foundation in mathematics and computer programming, which are the languages bioengineering uses to represent and model the behavior of biological systems.
Being an interdisciplinary field, it's critical to balance your time spent learning the various sciences to become an effective bioengineer. You need to have an understanding of very different areas of science such as cell biology and fluid mechanics, so you can integrate these ideas together in your research.
In my experience, students with a background in physics, mathematics, or chemistry actually do better in graduate level bioengineering courses than students whom studied bioengineering or life sciences as undergrads. The formerer were learning to solve complex problems and represent phenomena with mathematics while the bioengineers were memorizing facts and nomenclature in biology classes. Memorizing biological facts is much easier to pick up on your own when you need it, whereas math proficiency is a skill that must be developed over years of practice.
Many prominent professors of bioengineering actually have their degrees in the physical sciences, and taught themselves the relevant biology.
The most important advice I can give is to start doing research in your field of interest NOW. Even in high school, you can volunteer to work in a professors lab. Performing research is where the real education occurs, not in the classroom.
I feel like choosing employment by industry or field of interest is silly. I thought clinical coding would be a good career because I'm interested in encylopediac knowledge of medical stuff. Beware a career in clinical coding if you are interested in medical taxonomy academically. Clinical coding gets low pay, repetitive, automatable and ut's a skill specific to hospitals so that limits your employment field.
I'm a high school senior from Europe and in a few months I'll be heading to university.
I have a keen interest in the human body. As such, I would like to work in emerging interdisciplinary fields, such as stem cell transplantation and suspended animation.
I could go on to study, say, Biomedical Science, but I'm also fascinated with Engineering. That is, I think that my aspirations, which are to improve human condition, could be well served from an Engineering standpoint.
What do you think? Would my interest in the human body and its applications be better suited for Engineering or for Biomedical Science? How should I decide what to study?