Consent for 16- and 17-Year Olds in Ireland: What the Law Says in 2026

Consent for 16 and 17-year-olds is a complex area of Irish healthcare. Families, young people and professionals often want a clear answer to a simple question: can a young person agree to or refuse treatment?

The reality is more nuanced. The answer depends on capacity, the type of treatment, the level of risk involved and the legal framework that applies.

At Shine, we regularly hear from young people and families trying to understand their rights in practice, particularly in mental health settings where decisions can feel more urgent and more complex.

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What consent means for 16 and 17-year-olds

In Ireland, 16 and 17-year-olds can generally consent to medical treatment if they understand what is involved.

This is based on the principle that young people at this age may have the ability to make informed decisions about their own care. However, this is not automatic. Healthcare professionals must be satisfied that consent is:

• informed
• voluntary

based on a clear understanding of the situation

Consent is not a one-off event. It is an ongoing process of communication.

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What informed consent involves

For consent to be valid, a young person needs to be able to:

• understand the treatment being proposed
• consider the risks and benefits
• understand alternative options
• recognise the consequences of accepting or refusing treatment
• communicate a clear decision

If any of these elements are missing, professionals may question whether consent is valid.

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Can a 16 or 17-year-old refuse treatment

A young person may be able to refuse treatment, but refusal is treated more cautiously than consent.

This is particularly the case where:

• there is a serious or life-threatening condition
• the risks of refusing treatment are significant
• there are concerns about the young person’s ability to fully understand the consequences

In these situations, healthcare professionals may seek further assessment, involve parents or guardians, or in rare cases consider legal intervention.

There is no single rule that applies in every situation. Each case is considered on its own facts.

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The role of capacity

Capacity is central to decision-making. Age alone does not determine whether a young person can make a decision.

Professionals assess whether the young person can:

• understand relevant information
• retain that information long enough to make a decision
• weigh up risks and benefits
• communicate their decision clearly

Capacity can vary depending on the complexity of the decision and the circumstances at the time.

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Mental health and consent

Consent can be more complex in mental health settings. A young person’s ability to make decisions may be affected by distress, anxiety or the nature of their condition.

This does not mean that young people lose their right to be involved in decisions. However, it does mean that professionals must take additional care to ensure that decisions are informed and that risks are properly understood.

In practice, this often involves:

• spending more time explaining options
• checking understanding carefully
• involving additional supports where needed

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What has changed under recent mental health legislation

Recent reforms, including developments linked to the Mental Health Bill 2024, place greater emphasis on the rights of young people and their involvement in decisions about their care.

Key developments include:

• stronger recognition of the voice of the young person
• clearer expectations around assessing capacity
• a focus on least restrictive approaches to care
• improved safeguards where involuntary treatment is considered

These changes reflect a broader move towards rights-based, person-centred care.

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The role of parents and guardians

Parents and guardians continue to play an important role in supporting young people, even where the young person can consent to treatment.

In practice, parents often:

• help interpret information
• provide emotional support
• support communication with healthcare professionals

However, there can be disagreements. Where this happens, professionals must balance the young person’s rights with their duty of care.

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Balancing autonomy and protection

One of the central challenges in this area is balancing a young person’s autonomy with the need to protect their wellbeing.

Healthcare professionals do this by:

involving the young person as much as possible in decisions

providing clear and accessible information

monitoring risk carefully

seeking additional advice in complex situations

This balance is not always straightforward, particularly in high-risk cases.

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A note from Shine

We often hear from young people who feel unsure about their rights, and from parents who are unsure how decisions are made.

Clarity matters.

Young people want to be heard and taken seriously. At the same time, families want reassurance that decisions are safe and appropriate.

Clear communication is central to both.

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How Shine can support

Shine provides information, education and support to people experiencing mental illness and their families across Ireland.

We support people to:

• understand their rights
• navigate mental health services
• access clear and reliable information
• access supports to suit need

If you need support, you can explore Shine’s resources or contact our team.

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Conclusion

Consent for 16 and 17-year-olds is not a simple yes or no question. It depends on capacity, context and risk.

Understanding how these factors interact helps young people, families and professionals make better decisions and communicate more effectively.

If you need guidance, Shine can support you to understand your options and take the next step with confidence.

If you need trusted guidance, Shine offers expert mental health support Ireland, along with resources and advocacy for young people and families. Contact Shine today to access reliable support and take a confident step toward informed decision-making.

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FAQs

Q1. Can a 16-year-old consent to treatment in Ireland?

Yes, in many cases, if they have the capacity to understand the treatment and its consequences.

Q2. Can a 16- or 17-year-old refuse treatment?

They may be able to refuse, but refusal is assessed more carefully, particularly where there are serious risks.

Q3. What does capacity mean?

Capacity refers to the ability to understand, retain and weigh information and communicate a decision.

Q4. Do parents have the final say?

Not always. If a young person has capacity, their views are usually given significant weight, but parents are still involved.

Q5. How does mental health affect consent?

Mental health may affect how decisions are made, but it does not remove a young person’s right to be involved.