Thank you very much for giving me the opportunity to come today. I'm going to continue with the theme of chronic disease, and I'll change the tempo a little bit to be a bit more personal.
I'm very delighted that you're interested in chronic diseases related to aging. This is my long-term research interest as an epidemiologist and health services researcher. My particular expertise is in arthritis and other musculoskeletal conditions.
What I want to do today is help put arthritis more firmly on your radar screen and convince you that you must include arthritis in your deliberations on chronic diseases and aging. Of course, this is a huge topic, so I've chosen to focus on a couple of aspects that I think you'll find most relevant.
These are, first, how arthritis and other chronic diseases are related to each other, and second, why this is important to healthy aging.
I should first set arthritis in a Canadian context. It's one of the most common chronic conditions and is by far the most frequent cause of disability in the population. One in six Canadians, about 4.5 million people, report having arthritis, and that is a lot. A great many of these people are aged 65 or older, representing over 1.7 million seniors. That's the same as the populations of Manitoba and Newfoundland and Labrador combined. On top of that, there are a further one million, about the same as the population of Saskatchewan, who already have arthritis and will become seniors during the next 10 years.
I don't have time to go into a lot of detail about arthritis. If you need to know more, please do ask. An excellent source of information is this report from the Public Health Agency of Canada. It's called Life with Arthritis in Canada, and it gives a very good picture of the personal and public health challenges of arthritis.
Arthritis is a broad family of diseases, and I'm just going to talk about one of them: osteoarthritis, or OA, as we call it. More people have OA than any other kind of arthritis. About one in eight people in Canada have it, and a lot of them are seniors.
OA, like other kinds of arthritis, is linked to other chronic diseases. Take, for example, a friend of mine, a real person, who I'll refer to as Marie. She's a very lively, positive, creative person with a great sense of humour. My husband calls her the one-woman walking cabaret. Marie is only in her late sixties, but she's had OA for about 20 years. She has big problems with mobility. Just walking and climbing stairs is difficult and painful. Over the years I've watched as the pain and stiffness of her OA have made her less and less physically active. That's meant that she's put on weight. The more weight she puts on, the worse her arthritis gets, so she's caught in a vicious circle of arthritis pain, less activity, and more weight gain. Another effect of her weight gain has been that she's developed hypertension and heart problems. And on top of everything else, she's now been told to watch what she eats, because she's on the cusp of getting diabetes.
Marie is not alone in having a combination of other health conditions, as you've already heard. Most seniors have more than one chronic condition. A recent Stats Can survey targeted to healthy aging showed that 90% of seniors with arthritis have at least one other chronic condition.
The interesting thing is that we're now learning that these co-occurrences of arthritis and other conditions likely don't happen by chance.
We all know that lack of physical activity and excess weight are associated with an increased risk of heart disease and diabetes as well as some cancers. So we can speculate that Marie's disability and weight gain brought about by her OA may have contributed to her other health problems.
A well-known side effect of anti-inflammatory medication for arthritis is an increase in blood pressure, and that in turn can increase the risk of a heart attack. In fact, for this reason, Marie's doctor has stopped giving her these meds, which means that she's left with a lot of pain.
It's hardly surprising that the wonderfully positive Marie sometimes get depressed. This is worrying, because depression increases the risk of having a heart attack.
There's yet a further twist to the story. Arthritis is the most common cause of inflammation, and research is beginning to suggest that inflammation itself might be bad for you--bad for your heart, your diabetes, and a number of neurological and other conditions.
This may sound like terrible news, but the good news is that it's opening the door to understanding how and why different chronic conditions can occur together. Knowing what leads to what and why raises the exciting possibility that we might find new ways to prevent chronic diseases. CIHR's initiative focused on inflammation is certainly a step in the right direction.
Let me spend my remaining time focusing on what can be done about arthritis.
There's a powerful myth that influences both people with arthritis and their doctors, that OA is an inevitable part of aging for which nothing can be done. This is not true. Younger people have arthritis, and, for the record, the major treatment strategies for OA are medications for pain and inflammation, maintaining a healthy weight, exercise, and for end-stage arthritis of the hip and knee, joint replacement surgery.
Marie has had both knees replaced, which has helped a lot, but she still has arthritis in her feet, hands, and back. One of her problems is getting access to expertise within the health care system. Many primary care doctors aren't confident in dealing with arthritis, which can probably be traced back to a lack of arthritis training in medical education. Our orthopedic surgeons focus, of course, on surgery, such as total joint replacement, and our rheumatologists are busy dealing with rheumatoid arthritis. This raises the question of where people like Marie can go for expert advice on disease management. And, don't forget, she represents a very large number of Canadians who suffer from arthritis.
This is where we need the kinds of innovations in the health care system you've just heard about. We need innovations in the way we deliver arthritis care to ensure people like Marie can get the help she needs. There are some encouraging beginnings across Canada. CIHR has also funded research looking at new models of delivery of care for arthritis, some of which involve professionals such as advanced practice physiotherapists and nurses. But there's still a long way to go.
And of course we can't forget that arthritis is associated with other health problems. As you know, this is a challenge for our health care system, which typically deals with one condition at a time. Marie spends a lot of time going to medical appointments with different specialists to deal with her various health problems. This issue is not unique to arthritis, and I know you've already heard about the need for a more integrated health care system and patient-centred care. However, the discussions about this, and particularly about chronic disease management, do not always include the needs of people with arthritis. It's vital that this is changed, given the large number of people with this chronic disease.
I'm trying to encourage Marie to take advantage of various community-based treatments such as exercise, physical activity, and weight loss, as well as chronic disease self-management programs. The good news is that these are the same things that are recommended for other chronic conditions, as I'm sure you know. However, we need to keep in mind the needs of people with arthritis. For example, the current Canadian recommendation for physical activity for seniors is at least two and a half hours of moderate to vigorously intense aerobic activity each week. Marie can hardly get out of her house. We need ways to help the Maries of this world deal with the pain and stiffness of arthritis and to be able to gradually ramp up to full physical activity and at the same time reduce their risk of other chronic conditions. Physical therapists and chiropractors can help with physical activity, but, as you've already heard, we need to deal with some of the financial and other barriers that stop seniors and low-income people from taking advantage of their help.
The thing is, exercise works. I have another friend, Jeanette, who has arthritis in her back, hands, and knees. Two years ago, she had to hang onto her husband's arm for support when she was walking outside. This year, she began to meet daily with a personal trainer and started a graduated exercise and walking program. Two weeks ago, she walked 21 kilometres in the Toronto marathon. This, more than all the scientific studies that I've read, convinces me that support for physical exercise for people with arthritis can reduce disability, and may even potentially postpone the need for joint replacement surgery.
In conclusion, I hope I have helped to convince you that when thinking about healthy aging and chronic disease, we cannot and must not neglect the needs of the large number of people with arthritis.
There are three reasons for this. One, arthritis is important in its own right. It is the most frequent cause of pain and disability, especially in older people. Two, having arthritis increases your risk of other chronic conditions, and this knowledge needs to be built into chronic disease prevention and management strategies. Three, we have to recognize that having arthritis pain and disability may prevent many older people from getting the maximum benefit from existing chronic disease strategies.
This is a quick look at some of the most important issues, but there is a lot more. If you'd like to know more about this important disease, I'm sure the Arthritis Society and other members of the Arthritis Alliance of Canada would be more than happy to help you, as would I.
Thank you for your attention. I would be very happy to answer questions.