It is doubtful that they could be an intern. There are laws regarding working and most places require you to be at least 14. And hazardous jobs are not going to be allowed.
Seeing new places. Experiencing new culture. While being paid to do so.
No. To be able to use the MD degree, you must intern in order to practice and reinforce your skills and knowledge.
No, since a "nutritionist" in the UK is not a legally protected term. This means that anyone can use it to describe themselves, even without training. Hence an internship is not required. (The legally protected term, which requires training, is "dietitian").
In this case, the physician probably noticed something that required more attention to detail. This is why the surgery was ordered instead of a diagnostic test.
http://www.legalworkplace.com/intern-or-employee-you-decide-before-dol-does-pla.aspx
An intern takes care of patients, runs tests, that sort of thing. Surgical interns do some operations. The big thing with interns is that they can't do any of this unsupervised. They always need a resident or attending watching them.
Regarding age, there's no SET age, but you need to complete College and Medical School, so that's 8 years right there. Plus, lets say, K-8 grade is another 8 years, so 16 years so far. Plus 4 years of highschool, you'd need to be at least 25. (Assuming you started Kindergarten at 5.)
Implementing a plan of action
The Ontario Legislature Internship Programme (OLIP) was established in 1975. The Programme is administered by the Canadian Political Science Association and runs through a financial grant from the Legislative Assembly of Ontario. OLIP is a non-partisan program and is not associated with the Government of Ontario nor with any political party.
Each year, the Programme provides interns the opportunity to work as highly qualified assistants to backbench Members of Provincial Parliament (MPPs). The interns write questions, statements, press releases, attended stakeholder meetings and visit the constituency's of their MPPs, among many other activities. In addition to getting the practical experience of the daily workings of the Ontario Legislature, the internship has an academic component which allows each intern to write a paper on a topic of their choice.
Interns also have the opportunity to supplement knowledge of the legislative process through a comparative lens. Every year, the interns visit Ottawa, Quebec City, and London, England. The interns also have the opportunity to choose a destination in either the US or Canada for a Spring visit.
Each year, eight to ten interns are selected from across Canada through a highly competitive process. Internships are based in Toronto, begin each September and last for 10 months. The Programme is open to Canadian citizens, provided that they are a recent graduate of a Canadian University. Prospective interns should also demonstrate an interest in and a knowledge of the legislative process. The Programme welcomes and encourages applicants from all academic backgrounds.
Alumni of the Programme have gone on to pursue a variety of successful careers including positions in government, business, journalism, law and academic life.
An "extern." I recently heard the term used for someone who works in a voluntary capacity with a company or organization to learn the field, without pay, while assiting them. This enables them to learn the job, network, etc. Unlike an intern no association with an academic institution is necessary.