One of the hardest questions in medical law is how far a person may decide about their own body and treatment. The right to self-determination protects the individual’s ability to shape life and personality through free will. It is not limited to choices that take effect immediately. A decision expressed today may also guide a future situation in which the person can no longer communicate. Consent, refusal of treatment, advance directives and end-of-life decisions therefore belong to the same legal framework.
Human dignity and personal autonomy
The underlying value is human dignity. A person must not be reduced to the passive object of decisions made by the state, a doctor or someone else. Although the European Convention on Human Rights does not name a separate right to self-determination, its protection is derived from rights including life, freedom from inhuman treatment, liberty and private life. In Turkish constitutional law, the right to protect and develop one’s material and spiritual existence and the inviolability of human dignity provide central foundations for personal autonomy.
Autonomy does not mean that every requested act must be performed without limits. The law must respect individual choice while protecting life, bodily integrity and the rights of others. The central question is which clear and reviewable standards should govern that balance.
Consent as the legal key to medical intervention
Consent is central to the lawfulness of medical treatment. As a rule, the patient should decide freely after receiving understandable information about the nature and purpose of the procedure, its expected benefits and its risks. Valid consent can justify an intervention that would otherwise interfere with bodily integrity. The necessary counterpart is the right to withdraw consent. A patient who initially accepts treatment may later refuse it.
A person may also record instructions for a future loss of decision-making capacity. An advance directive can state whether artificial nutrition, ventilation or other life-prolonging measures should be used. It preserves the patient’s legal agency at a time when the patient may no longer be able to speak.
Refusing treatment is not euthanasia
A crucial distinction in the article is between a competent patient’s free refusal of treatment and the causing of death by another person. Under the Turkish criminal-law approach discussed in the article, a person does not have unlimited power to dispose of life. A request by the person concerned does not by itself make killing lawful, and encouraging or assisting suicide may create criminal responsibility. If a healthcare professional actively ends a patient’s life, the conduct is therefore generally assessed under the rules on intentional killing.
The position is different when an informed patient with decision-making capacity refuses treatment. This should not be labelled “passive euthanasia.” The doctor does not apply a method designed to cause death; the patient simply withholds permission for the proposed intervention. Death may follow from the natural course of the illness. The patient is not necessarily designing the time, place and method of death, but exercising the right not to accept treatment. Refusal and suicidal intent must therefore not be treated as automatically equivalent.
The Convention on Human Rights and Biomedicine likewise makes free and informed consent the basis of medical intervention and recognises that consent may be withdrawn. When a refusal is legally valid, not administering the rejected treatment reflects respect for autonomy. On the view defended in the article, the duty to continue that particular treatment then ends; the doctor’s omission should not automatically be treated as homicide by omission or failure to render assistance.
Bodily integrity and proportionality
Bodily integrity can be the subject of individual choice, but only within limits. The article argues that these limits should be defined primarily through the legally reviewable principle of proportionality, rather than vague notions of public morality. The aim and expected benefit of an intervention must bear a reasonable relationship to its risks and the bodily sacrifice involved.
The article illustrates this with a young model seeking to lengthen her legs by ten centimetres for professional advantage. The request is not objectionable simply because some may regard it as morally unusual. Yet when the risks of infection, lasting injury and serious complications are compared with the expected benefit, the operation may be disproportionate. This test protects professional medical responsibility while giving the patient’s freedom a clearer and more transparent boundary.
Termination of pregnancy: choice and protected interests
Termination of pregnancy is a special field in which control over one’s body meets the protection of developing life. Under the provisions of the Turkish Criminal Code examined in the article, a termination carried out within a defined period and with the required consent is not an offence. After that period, consent alone is insufficient; medical necessity or other statutory conditions must be present. The law also provides a special time limit and procedure where pregnancy results from a criminal offence.
Consent is therefore indispensable, but it does not create unlimited authority. The legal framework weighs the pregnant woman’s autonomy and health together with the protection of developing life. Statutory time limits express the legislature’s chosen balance between these interests.
Conclusion: protection without paternalism
In medical law, self-determination becomes meaningful through an informed, free and revocable decision. The duty of the state and the medical profession to protect life is fundamental, but it should not turn a competent patient into an object of treatment. Conversely, autonomy does not establish an unlimited right to have one’s life actively ended or to demand every risky intervention.
The law must carefully distinguish causing death from refusing treatment, consent from intervention, and protection from paternalism. Restrictions should rest on clear legal rules and proportionality. Especially in criminal law, vague moral judgements should not replace foreseeability and legal certainty. Human dignity is best protected not by ignoring the person’s will, but by examining whether that will is free, informed and legally valid.
Note: This post offers a general-reader summary of the legal section of the 2014 co-authored article “The Individual Right to Self-Determination in Medical Law and Related Ethical Observations” by Çağatay Üstün and Gülsün Ayhan Aygörmez Uğurlubay. The law applicable to present-day individual cases should be checked separately.