The most pressing ethical issue with regard to PWS is the dilemma of whether or not it is right to prevent access to food - in almost every other situation this would be regarded as against human rights. This article by our President, Professor Tony Holland, examines this issue and the potential use of the Mental Capacity Act 2005 in resolving it.
Although the Mental Capacity Act (MCA) has implications for other aspects of PWS, this article will focus on the possible relevance of the MCA in the management of the over-eating behaviour and risk of life-threatening obesity associated with the syndrome. Key questions to consider are:
Prior to the MCA coming into force, decisions about the legality of a controversial or disputed decision about whether a person should receive treatment or not had to be referred to the High Court to be resolved. These cases have resulted over the years in the development of Case Law (sometimes referred to as Common law) and they have in turn established the principles that are relevant to resolving ethically and legally challenging situations. It is clear that there has been a move away from a paternalistic "doctor knows best" position to one of recognising that it is for the patient to make healthcare and others decisions for him/herself, provided he/she has been properly informed and has the capacity to consent. It is properly informed consent that makes treatment lawful.
In English law, an adult is deemed as anyone aged 18 or over, regardless of whether they have any limitations in their intellectual capacity. In recent years, decisions coming before the courts have extended from healthcare cases to matters concerning social care. In both situations a key issue has centred on the person's capacity to make the decision in question. The case has usually come to court because of disagreements between various parties either about someone's capacity to make the decision in question or about what was the best course of action to be taken on behalf of the person concerned. In the case of Ms B this was whether to continue to provide artificial ventilation to a person who was completed paralysed and did not wish for such ventilation. The court ruled that as she had the capacity to make this decision - it was for her to decide.
Existing legal and ethical frameworks which support the rights of everyone need to be considered, whether or not they have PWS - as yet there are no legal precedents for the case of people with PWS. The major frameworks are:
Government legislation and judicial decisions also have to be compatible with the Human Rights Act, some of whose articles are as follows:
In arriving at a decision in contested cases, courts may have to balance one right against another. An example is the right to life. If treatment will at best only prolong life for a few days but will result in considerable discomfort, does the right not to be subjected to cruel and inhuman treatment outweigh a right to life?
In addition, there are various UK government policies which need to be considered. Key ones with regard to people with learning disabilities are "Valuing People and Valuing People Now", which set out the following principles:
Various instances of case law pertaining to adults also have to be taken into account. In these, the underlying principle is that consent from an adult is crucial to making a decision "lawful".
In the case of Mr C, he was in Broadmoor with schizophrenia. He had diabetes and his leg had become gangrenous. The surgeon recommended that he have it amputated, as there was an 85% chance of death if he did not. Mr C contested this, saying he did not want his leg amputated. The Court upheld Mr C's appeal, as it was deemed he had capacity to make decisions about his physical health. In fact, Mr C subsequently left Broadmoor with both legs intact. In the case of Ms MB, she had a phobia of needles and was refusing to have a Caesarean section, even though her life and that of her unborn child were at risk. In her case, the Court ruled that she lacked capacity to make a reasoned decision as her phobia overcame everything else. She had the Caesarean and both she and the child survived.
In addition to the above cases, the case of Mr HL versus the UK (known as the Bournewood case) was also very important as this case, having gone through the full appeal procedures in the English courts, went to the European Court of Human Rights (EctHR) where the UK was found at fault. HL was a man with autism and severe learning disabilities who was kept in hospital initially informally against the wishes of his paid carers. The ECtHR found that he had been deprived of his liberty and that there was no clear process for determining such a course of action and no ready means of appeal. It was this case that subsequent led to an amendment of the MCA in order to introduce the Deprivation of Liberty Safeguards (DoLS) in 2009.
Given this principle of self-determination and the fact that it is consent that enables treatment to lawfully take place, the problem that then has to be considered arises from the fact that developmental (i.e., learning disabilities), acquired neurological (e.g., strokes; unconsciousness) or psychiatric disorders (e.g., profound depression, dementia) may result in an impaired ability to make a decision or the person may be unable communicate his/her choice. Hence the following questions arise:
The MCA, as a solution to this problem, was first proposed in the mid 1990s as a means of providing a statutory framework to enable decisions to be made on behalf of people who lack decision-making capacity and also to establish guidance as to the determination of capacity and of what was meant by "acting in someone's best interests". Such law would also provide the means of challenge when opinions about capacity and/or best interests are disputed. It has taken 10 years of debate, discussion and consultation to finally become an Act of Parliament - the Mental Capacity Act 2005.
Much of the Act is putting into statute existing common law and therefore the principles enshrined in the Act should in fact already be guiding health and social care practice. The MCA is concerned with adults aged 16 and over who may lack decision-making capacity, and those aged 18 who (having capacity) may wish to make advanced decisions or appoint lasting power of attorneys (LPAs) in the event of future incapacity. This can be done by appointing someone, or more than one person, to act on your behalf for decisions involving health and or property and financial affairs in the event that you develop an illness or suffer an injury that affects your ability to make decisions.
The MCA is very important for those working in health or social care settings as all those working in a professional or caring capacity with a person found to lack the capacity to make a particular decision, or who is undertaking an act that is required to be undertaken or done, must have regard to the MCA and its Code of Practice. Where someone lacks the capacity to make a particular decisions the MCA allows for ‘Acts in connection with care and treatment’ to take place providing they are in the person’s best interest. The MCA does not strictly provide the authority to act but rather a justification for acting and therefore protection from liability. It is meant to be empowering rather than restricting. Under the new MCA, the Court of Protection will also have the power to make decisions where there are disputes and to appoint deputies to make a particular decision with respect to specific situations. When determining what is in a person’s ‘best interest’ the person requiring the decision to be made must consider a number of factors including the past and present ascertainable wishes of the person concerned as well as the views of relevant others. An action must be the least restrictive that is appropriate (see below for further details).
At the beginning of the MCA five basic principles are stated that set the framework for the Act. These are:

The diagram shows the first piece of research undertaken by Tony Holland in the 1980s, which graphically shows the increase in weight experienced by a young woman with PWS after she left home and went to live in a hostel, followed by a spell in hospital, and then back in a hostel again. Her diet was controlled in her home environment but not when she left home. This scenario has subsequently been repeated many times over with different people with PWS, and perhaps best illustrates why people with PWS should be on a diet and living in a food managed environment. The consequences of having uncontrolled access to food has been backed up by this and subsequent research, such as that recently conducted by Ella Hinton (1) and others, which showed, using brain imaging, that the response in the brains of people with PWS to having eaten food is abnormal - it is as if the brain doesn't recognise that the person has eaten. These research observations raise challenging ethical and legal questions.
The dilemma of what to do to prevent obesity however remains and can be extended to other forms of obesity, other than that associated with PWS as well as to the converse, not eating, ie anorexia nervosa:
Q: Does the person with PWS have impairment of brain or mind?
A: Yes, even if they do not have an intellectual learning disability. Brain scans done under research conditions show definite impairment in the brain of people with PWS - ie messages from the stomach to the brain that they have had enough to eat are not getting through. A diagnosis of PWS automatically allows this argument to be put forward.
Q: Can the person make a reasoned decision about whether or not to eat?
A: No, the analogy here is as with the case of Ms MB (see above), who had the phobia of needles. The drive to eat overwhelms the rational decision-making process. Also the more "chaotic" the environment is, the more capacity to make decisions is decreased in PWS (ie they find it difficult to switch attention from one option or stimulus to another). Decision-making capacity is decision and time specific and someone with PWS may be able to make such decisions in some circumstances but not in others (see below).
In childhood, families have a duty to act in the best interests of their children. This is encapsulated in The Children Act (1989). Hence with the early diagnosis of PWS and with full knowledge of the risks of the syndrome, families could be seen to have a duty to manage the eating environment.
During the teenage years, up to age 18, a teenager may have the capacity to make decisions. Even if they clearly are able to make decisions for themselves, parents can still overrule a decision made by their teenager if they decide to refuse treatment.
In adult life, age 18 or over, there is a dilemma with regards to the support of people with PWS between respect for autonomy (self-determination) and the need for care and/or treatment.
In the general population it would be considered wrong to force a person to diet - is this also true for those with PWS? How might this tension between respect for autonomy and the major risks of life-threatening obesity if the now adult person with PWS is allowed free access to food, be resolved? There are several possible routes with the potential for increasing involvement of the legal system:
Section 2(1) of the MCA states:
"a person lacks capacity in relation to a matter if at the material time he is unable to make a decision for himself in relation to the matter because of an impairment of, or disturbance in the functioning of, the mind or brain."
Within the framework of the MCA decision-making capacity is determined for each decision at a particular point in time. This acknowledges that people are capable of making decisions about some things but not about others, and that they may be able to make decisions at some points in their lives, but not at others.
Our knowledge of PWS is such that we can say this is true for people who have the syndrome: they may be able to make many decisions but, for example, may not be able to make a decision about the amount of food to eat. In the context of the MCA this determination of capacity is to be carried out by the person requiring the decision to be made - for example, a doctor in the case of health treatment.
When assessing a person's decision making capacity the following applies:
To prove a lack of capacity, it does not matter whether the impairment or disturbance is permanent or temporary; it should not be solely judged on age, appearance or behaviour, and should be decided on a balance of probabilities. The latter is a lower level of proof than that required in a criminal court - "beyond reasonable doubt".
Section 3(1) of the Act states that a person is unable to make a decision for himself if:
a) He is unable to understand the information relevant to the decision
b) He is unable to retain the information relevant to the decision,
c) He is unable to use or weigh the information relevant to the decision as part of the process of making the decision, or
d) He is unable to communicate the decision (by talking, sign language, or other means)
If the MCA was to be used to determine that a person with PWS had to live in a food restrictive environment it would have to be demonstrated that the person concerned lacked the capacity to make a decision regarding food intake. Whilst people with PWS may understand the issues, I would argue that some people with PWS are unable to use and weigh up the information to arrive at a decision. There has now been one case of a person with PWS being heard by the Court of Protection and also in Scotland under the Adults with Incapacity (Scotland) Act. In both cases the courts agreed with such a proposition.
In any given situation to judge whether someone has the capacity to make the decision in question, it is important he/she is appropriately informed. The following outlines the type of information that should be given. In assessing that person's capacity you then ask them to explain these particular issues that they have been told about.
If it is decided that someone lacks the capacity to make a particular decision that is required to be made as a result of an impairment or disturbance in the mind or brain then those who require the decision to be made can act on behalf of that person providing that they act in his/her best interests.
The person making the determination must consider all the relevant circumstances and, in particular take the following steps:
He/she must also consider:
He/she must also take into account, if practicable and appropriate to consult:
The MCA recognises that when someone lacks the capacity to make decisions (for example because of dementia) they may engage in behaviours that put them at risk of harm (e.g., wander into the road). Under such circumstances it may not be possible to persuade them not to do something and restraint may be necessary.
Restraint (i.e., using or threatening to use force) is allowable if it is believed it is necessary to prevent harm to the person. It should also be proportionate to the likelihood of harm and the seriousness of that harm. A person does more than restrain if he deprives the person of his liberty within the meaning of Article 5(1) of the Human Rights Convention. Deprivation of liberty (as opposed to just restriction of liberty), if it was to occur, will require special measures and cannot be justified simply by recourse to the MCA. If someone is being deprived of their liberty under the Deprivation of Liberty Safeguards (DoLS) the managing authority (those responsible for care) must seek the agreement of the supervisory authority (usually the Local Authority). Specific assessments are required before deprivation can be authorised – such deprivation must be deemed necessary and in that person’s best interests.
In the first instance, the duty of someone working with a person with PWS is to inform and work with the person as far as possible obtaining their consent to what is necessary to help prevent life threatening obesity. Regarding specific decisions (e.g., a potential move to residential care), the question needs to be asked, "What decision does s/he need to take and does s/he have the capacity to make that decision?"
If it is believed the person does not have capacity, then the next decision is to determine what is in his/her best interest and what is the least restrictive option? Finally, if very problematic situations, it may be necessary to at least consider whether the MHA be used. However, such legislation does not resolve the long term issue of managing the food environment. It may be of value if someone with PWS has become seriously depressed or is psychotic and requires treatment in hospital for that reason.
1. Respect for autonomy - like anyone with obesity - restrictions only with consent
2. If lacking the relevant capacity to consent - the Mental Capacity Act 2005 - act in his/her best interests;
3. Other legislation (e.g. Mental Health Act 1983 - amended 2008). The Mental Health Act is more relevant for cases involving psychosis, and is less relevant for eating problems.
The following questions should be answered:

As stated before, there are no laws which apply specifically to children and adults with PWS. We are therefore left with several topics for debate, which include:
Q: My son fully understands all the implications of the need to restrict food in PWS, and could convince an outsider that he is fully able to make a decision about it. But, given the opportunity, he will always overeat - he is in denial; he thinks he can control that area of his life.
A: This reminds me of the case of Miss MB (not someone with PWS), who needed an urgent Caesarean section but had a phobia of needles. The consequence of not having the section was that her baby would die. In court it was argued that she lacked capacity because of the phobia, which was preventing her making a reasonable judgement. In this case she new the issues but her fear of needles overwhelmed her. In the end, a similar court case may need to be brought for someone with PWS. A person with PWS may say "I know I can diet" and yet they are so dominated by hunger that to act on that is almost, if not, impossible. However, people with PWS who live in a food-controlled environment are, by and large, much happier than those who don't - the temptation has been taken away from them.
Q: Does the Court of Protection have a role as a forum where options can be discussed where there is disagreement between statutory services, parents, and the person with PWS?
A: Yes, the person themselves has an automatic right of appeal over a decision as to his best interest. Others have the right to apply to appeal. The Court has the powers to appoint a Deputy, who could be a relative, to make a decision about a particular situation.
Q: You mentioned that the MCA brings into statute the duty to appoint an advocate under particular circumstances. Can you tell us more about that?
A: An Independent Mental Capacity Advocate (IMCA) must be appointed under specific circumstances - if the person has no family or friends who can speak for him and the person concerned lacks the capacity to make the decision in question for him/herself. It only applies to situations where the person is moving accommodation or is faced with serious medical treatment (defined in regulation). IMCAs may also be appointed where family are involved in care or protection of vulnerable adult (POVA) proceedings. The role of the IMCA is to make certain that the voice and opinions of the person lacking capacity is heard. The IMCA has to be appointed by the local authority from the local area and be recognised as an IMCA, so it is unlikely it would not be possibly for a PWSA UK advocate to take on this role. However the IMCA would be expected to consult with any existing advocate - who may be from the PWSA UK.
Q: What sanctions are in place to remove a person who is putting themselves or others at risk?
A: Where someone lacks the capacity to make a particular decision, the main obligation is to act in that person's best interests. For instance, if they are wandering off and cannot be persuaded otherwise, then gentle restraint maybe allowed to guide them back, providing it is proportionate to the risk of harm. Here a distinction might need to be made between what you would like to do in someone's best interest and what is possible. The MCA provides a framework but in practice it can be very difficult and persuasion and long term strategies are often required before a particular problem is resolved.
Q: I am concerned I am considered an over-protective parent and feel that liberal social services and local authorities will take the easy option under the MCA of considering the person with PWS capable, especially where they have an IQ of over 70.
A: Yes, this continues to be a difficult point. One course of action would be to embarrass the LA into thinking through the consequences of their actions - what are they going to do if the person's health deteriorates or the person becomes vulnerable to abuse? You need to point out that this is a genetic disorder. If you feel the LA is not acting in the person's best interests, consider legal action. However, it does all hinge around the issue of capacity and if the LA is of the opinion that your adult child has capacity you may need to seek a further opinion about that. Some people with PWS may have capacity - must be careful not to start with a blanket assumption.
Q: How long should decisions take? Are there any guidelines within the Act?
A: Not really. It is more important that the outcome is in the best interests of the person. The Act is really just a framework for resolving complex ethical dilemmas. I would advise that you make use of the Association if you feel that social services have not properly thought through a decision. There is now no excuse for lack of knowledge as there is plenty of information about PWS on the internet.
Q: My daughter is currently regarded as being "low criteria" by social services and therefore has few services offered to her. Does the MCA mean that social services will now have to re-write their assessment forms so that the right questions are asked about someone's abilities, rather than just taking the fact that a person can cook and travel independently at face value?
A: Yes, social services will now have to include capacity in their assessments. The uniqueness of PWS should be stressed.
Q: How can people assessing capacity make a reasoned decision on the basis of just a couple of interviews with the person with PWS?
A: The person doing the interview must justify their decisions. We have got to start making sure that people take responsibility for their decisions, and realise the seriousness of allowing capacity. Evidence is crucial. For instance, keeping weight records can show that a person is gaining weight even though they may say they are not. Keep very detailed records and clear evidence that a serious problem exists.