Thank you.
Hello to everyone who is listening this morning.
I would like to thank the joint chairs and members of the committee for this invitation. I am both very happy and honoured to have been invited to participate in the discussion with the members of this very important committee.
This morning, I am essentially wearing two separate hats.
First, I have been a researcher specializing in the causes and treatments of Alzheimer's disease for 35 years and the co-discoverer of the principal gene associated with the common form of Alzheimer's disease. I am perfectly familiar with the genetic and environmental risk factors that hide behind the disease. We will be able to talk about that at greater length if you wish, during the question period.
Second, I am the child of two parents who had Alzheimer's disease for whom I was the caregiver, first with my father and then with my mother. I followed the usual path of the fighter. I experienced the progress of the disease at every stage, up to the very end, very closely and very emotionally, and some of the fights were painful.
Although I have worked in a psychiatric hospital for 35 years and I am a full professor of psychiatry at McGill University, this morning I am talking only about Alzheimer's disease. Mental illnesses are another and, in my opinion, very different situation.
What is Alzheimer's disease in 2022?
It is, first and foremost, an incurable and irreversible disease for which the primary risk factors are genetics and age. They are both factors that it is unfortunately impossible to mitigate or manipulate with medication.
Alzheimer's disease exists in two main forms. The first is called the early-onset form; it is genetic and aggressive, and we have identified several causative genes. I stress the term "causative". It means that we know whether and when these individuals will have the disease. This small group of families represents about two to three per cent of all cases. That is not a lot, but when this form strikes a particular family, one out of every two children will become ill in each generation. If there are eight children, four of them will have the disease.
The other form of Alzheimer's disease is the sporadic form. This is probably the one you are most familiar with. You have certainly known someone, at some point in your life, who was affected by the sporadic form. This form has a genetic component that represents about 60 per cent of the risk. I am not talking about causative genes; these are risk factor genes. Unlike the familial form, it is not causative genes that are involved, it is risk genes. This risk gene will combine with factors described as environmental or lifestyle-related. They include cardiovascular problems such as hypertension, diabetes, uncontrolled cholesterol, obesity, and even uncontrolled sleep disorders. So it is the combination of genes and cardiovascular or lifestyle-related factors that trigger Alzheimer disease.
It is a disease that will last eight to 12 years, on average. At the very end, a person will gradually lose their physical and mental abilities and experience difficulty performing the activities of everyday life. In its most serious period, the immune system will deteriorate to the point that it is infections such as pneumonia or bronchopneumonia that kill the person. Alzheimer's disease does not kill the person, but it leaves the person in such a weak condition that it is the infections that kill them.
In the last two years, COVID-19 is what has killed people with Alzheimer's disease in nursing homes. It wasn't pneumonia.
That brings me to the second part of my presentation, which is an overview of the situation in the European countries that have included Alzheimer's disease in the list of diseases that may be relied on in connection with medical assistance in dying.
The Netherlands enacted a medical assistance law in 2005, but it was difficult to apply in practice for a decade in connection with mental illnesses, in particular in the case of Alzheimer's disease.
In 2018, the Royal Dutch Medical Association finally established very clear guidelines, which were confirmed in April 2021 by the Netherlands Supreme Court and allow the use of advance directives in connection specifically with Alzheimer's disease.
I am going to give you some figures that surprised me a little myself, but at the same time were reassuring. In 2018, 6,126 patients requested medical assistance in dying in the Netherlands. Of that number, 144 patients made a request when they had a diagnosis of Alzheimer's disease in the mild or moderate phase, that is, in the phase of the disease when it is still possible to make an informed judgment and give consent.
So 144 of the 6,000 or so applicants were given permission to receive assistance. Of that group, only two used advance directives, that is, directives that had been formally put in writing and that their families activated to respect the person's wishes. So really very few people went this route in a situation involving Alzheimer's disease.
In Belgium, people who suffer from Alzheimer's disease represented four per cent of the people who requested this assistance. Unfortunately, the data does not differentiate between advance medical directives and other requests.
In Switzerland, people with mental or behavioural disorders, including Alzheimer, represented about three per cent of the people who requested medical assistance in dying. The figures do not distinguish between the two types of requests.
To conclude, I would like to remind you that a person does not die of Alzheimer's disease, but it certainly creates serious problems for dying with dignity. Alzheimer puts you in a severe state of physical deterioration to the point that you become vulnerable to any infection there might be. COVID-19, recently, was the one that took many Alzheimer sufferers from us.
I would remind you that the idea of psychological pain is also central to this discussion. That pain is not experienced only at the time of diagnosis; it is present throughout the illness, particularly in the second part.
I will stop here and wait for your questions.
Thank you.