The line between cosmetic and necessary cannot be drawn, so a ban would catch reconstruction too

The argument

A second objection is that the offence could not be defined. Opponents argue that there is no stable boundary between surgery that treats and surgery that alters appearance, because a great deal of accepted practice does both. Repairing a cleft palate, rebuilding a face after a collision, reconstructing a breast after cancer treatment, correcting a scar that restricts movement, operating on eyelids that obstruct vision, and treating the physical effects of major weight change are all procedures whose purpose is partly functional and partly how the person will look and be seen. Any statute drawing a line through this territory would either sweep in procedures nobody intends to criminalise or leave the distinction to be made case by case, which is prohibition in name and discretion in practice. The difficulty deepens where the benefit claimed is psychological. If relief from serious distress about one's appearance counts as a medical purpose, opponents argue, then much of what the proposal calls unnecessary qualifies as necessary, and the offence largely disappears. If it does not count, then the statute declares that distress about appearance is not a real harm, which contradicts how such distress is treated everywhere else in medicine. Opponents argue there is no third option that a legislature could draft and a court could apply consistently. Opponents also predict the practical outcome. Demand for these procedures has persisted across very different legal and cultural regimes, and a prohibition would not remove it but relocate it: to jurisdictions with weaker oversight, and to unlicensed practitioners working without theatres, anaesthetists or any means of handling a complication. On this view criminalisation would convert a regulated activity with recorded outcomes and professional accountability into an unregulated one, leaving the patients it was meant to protect worse off and without recourse when something goes wrong.

Premises

Counter-arguments

Proponents of criminalisation argue that difficulty in drawing a line is an ordinary feature of legislation rather than a reason not to legislate, and that the law routinely distinguishes degrees of harm, necessity and intent in areas far less tractable than this. They note that clinical guidance already separates reconstructive from purely elective work for the purposes of public funding, so a workable distinction plainly exists and is applied daily. On the underground argument, they reply that the same prediction accompanies every prohibition, that it would equally counsel against banning unqualified practice of any kind, and that the correct response to evasion is enforcement rather than permission. A smaller illicit market, they argue, is better than a large lawful one.

Rejecting the premises

[Rejecting P1] Clinical guidance already separates reconstructive from purely elective work for funding purposes, so a workable distinction exists and is applied daily. [Rejecting P2] A statute can treat severe, independently diagnosed distress as a qualifying purpose without accepting every claim of dissatisfaction, which is how exceptions are ordinarily drafted. [Rejecting P3] The prediction of an underground market accompanies every prohibition and would equally counsel against banning unqualified practice; evasion calls for enforcement. [Rejecting C] Difficulty of definition is a drafting problem rather than a reason to leave a harmful practice lawful.