Studying overseas or being offered an internship can be a valuable and exciting part of your tertiary education. It is important to be insured during your study overseas in case anything should happen to yourself in The Netherlands or if you suddenly have to return home due to a sick relative.
Check out this website for an overview of insurances perfectly fit for international students.
Are you going to be working while in the Netherlands? Then by law, you must get a Dutch Health Insurance, or you may face a 400EUR fine for non-compliance. AON offers easy-to-set-up insurance for students, found here.