If you invent something or a solution that can treat chronic diseases, do you need to take a medical diploma to apply for an invention patent?

This is not necessary. If you discover something and a plan that can treat chronic diseases, as long as you clearly write it down and declare it, you can apply for a patent, regardless of whether you have a medical certificate or not? Because these things he will go through many layers of checks and experiments to finally determine whether your plan is effective. If it is really effective, it will not be the same. You can also apply for abilities, which are two different things