You need some better sources of information!
Here’s a a whole site devote to many different types of medical careers: [Explore Health Careers](https://explorehealthcareers.org). You can find reliable information about the educational requirements, salaries and other crucial information about a wide range of health-related jobs & careers. It will also provide links to other reliable websites with more detailed information about how to find training programs & colleges.
The site discusses [url=<a href=“https://explorehealthcareers.org/field/nursing/%5DNursing%5B/url”>https://explorehealthcareers.org/field/nursing/]Nursing[/url] and [url=<a href=“https://explorehealthcareers.org/career/medicine/allopathic-physician-m-d/%5DMedicine%5B/url”>https://explorehealthcareers.org/career/medicine/allopathic-physician-m-d/]Medicine[/url] (including anesthesiology).
Nursing can be a 2, 3 or 4 year program after high school, depending on the level of training (and consequently the level of responsibility) you want to pursue.
2 year programs typically allows you to become a vocational nurse or LNP (licensed practical nurse).
3 Year program typically allow you to become a RN (registered nurse)
4 year programs typically allow you to become a BSRN (a degreed registered nurse)
If you want to take additional training to become a nursing specialist (nurse anesthetist, nurse midwife, or nurse practitioner), you must first earn a BSRN.
Medicine (and anesthesia) requires a BA or BS degree plus completing a specific set of college classes, called med school pre-reqs. (Most of which are not part of a nursing program, not even a BSRN program.)
You cannot move directly from working as a nurse to becoming a med student. You first have to complete the required additional college classes, take the MCAT (a 7 hour standardized entry exam), apply and be accepted to medical school. Fewer than half of the people who apply to medical school each year get accepted. Don’t count on it being a sure thing.
Once you complete medical school, you will need to participate in specialized training, called residency, before you can be licensed as a doctor. Anesthesiology requires another 4 years of post-medical school training.
edited to fix links