A thesis statement has a number of elements that should always be included regardless of the subject matter, such as making an assertion that can then be built upon through supporting arguments while clearly indicating both methodology and problematic counter arguments during the process. Thesis statements are usually presented as part of the opening of an assignment or essay.
In order to compose a successful thesis statement regarding euthanasia, the first step is deciding which side of the argument the paper will take. The thesis statement can be built around the chosen argument.
Euthanasia has a number of arguments both for and against it. Some arguments for euthanasia include the ethical argument (people should have the right to choose and control what happens to them and their bodies), and the pragmatic argument (euthanasia is already happening, and as a result should be accepted and regulated).
Conversely, counter arguments include the religious argument (humans do not have the right to decide, only God), and the ethical medical argument (asking a doctor to help end a patient's life is directly in opposition to medical code of conduct).
Once one side of the argument has been chosen, the aims of the paper to justify and support the chosen side should be laid out, along with the problems and conflicts posed by counter arguments.