18 min
Oncologists’ Attitudes and Practice of Addressing Diet, Physical Activity, and Weight Management With Patients With Cancer: Findings of an ASCO Survey of the Oncology Workforce JCO Oncology Practice Podcast
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- Medicina
Dr. Nathan Pennell and Dr. Jennifer Ligibel discuss weight management and physical activity programs for patients with cancer.
TRANSCRIPT:
Hello, and welcome to the ASCO Journal of Oncology Practice podcast. This is Dr. Nate Pennell, medical oncologist at the Cleveland Clinic and consultant editor for the JOP. I'm sure everyone who listens to this podcast is aware that obesity and lack of physical activity are major health problems in the USA, and they contribute to multiple medical conditions such as heart disease, diabetes. But how much do patients and oncologists know about how obesity and lack of physical activity impact cancer incidence or treatment or outcomes? And how do physicians manage these issues in their practice?
With me today to discuss this issue is Dr. Jennifer Ligibel, associate professor at Harvard Medical School and medical oncologist at the Dana-Farber Cancer Institute, where she also serves as director of the Leonard P. Zakim Center for Integrative Therapies and Healthy Living. We'll be discussing her paper, "Oncologists' Attitudes and Practice of Addressing Diet, Physical Activity and Weight Management with Cancer Patients, Findings of an American Society of Clinical Oncology Survey of the Oncology Workforce." Welcome, Dr. Ligibel, and thanks for joining me today.
Thank you so much for having me.
So just to set the stage for our listeners, how big of a problem is obesity and physical inactivity among cancer patients? Is this something that is generally mirroring the larger problem we see in America, or is there anything different about our cancer patients?
Well, we know that obesity and inactivity are risk factors for developing a number of different malignancies. The International Agency for Research in Cancer and the World Cancer Research Fund have both analyzed observational data linking obesity, inactivity, poor dietary quality to the risk of developing malignancy, and have demonstrated really consistent evidence that there is at least 13 different malignancies where obesity, in particular, increases the risk of developing the malignancy. So if you think about the fact that obesity and inactivity are pretty prevalent in the United States, in general, and that these factors also increase the risk of developing malignancy, we find that an even higher proportion of cancer survivors are obese and inactive as compared to the general US population. We also know that treatment that patients get for some malignancies can contribute to weight gain, and also can contribute to inactivity. So you put all of these factors together, and a very large proportion of cancer survivors are at risk for obesity, inactivity, poor dietary quality, or all of those factors together.
I mean, the number that you and your co-authors mention is that almost 1/3 of cancer survivors are obese. That seems like a huge number. So clearly a major problem.
Yes, that's true. And that number has increased significantly over the last decade.
So I know that obesity contributes to cancer risk. But is there data that even treatment of cancer can be impacted by these issues?
Yes. So we know that obesity has an impact on treatment-related outcomes and, likely, on the risk of recurrence and mortality in many different diseases. Breast cancer has been the best studied, where we know that women who are obese when they're diagnosed with breast cancer actually have a 35% higher risk of dying from breast cancer compared to women who are of normal weight when they were diagnosed with breast cancer.
Similar data are emerging in other malignancies. Colorectal cancer, there has been a strong link with obesity and cancer outcomes. Prostate cancer, gynecologic cancers, there's emerging data as well. So we know that these factors can impact the risk of recurrence and mortality. But there's also evidence that suggests that people who have excess adiposity, have metabolic complications of obesity, are at higher risk of complications like poor wou
Dr. Nathan Pennell and Dr. Jennifer Ligibel discuss weight management and physical activity programs for patients with cancer.
TRANSCRIPT:
Hello, and welcome to the ASCO Journal of Oncology Practice podcast. This is Dr. Nate Pennell, medical oncologist at the Cleveland Clinic and consultant editor for the JOP. I'm sure everyone who listens to this podcast is aware that obesity and lack of physical activity are major health problems in the USA, and they contribute to multiple medical conditions such as heart disease, diabetes. But how much do patients and oncologists know about how obesity and lack of physical activity impact cancer incidence or treatment or outcomes? And how do physicians manage these issues in their practice?
With me today to discuss this issue is Dr. Jennifer Ligibel, associate professor at Harvard Medical School and medical oncologist at the Dana-Farber Cancer Institute, where she also serves as director of the Leonard P. Zakim Center for Integrative Therapies and Healthy Living. We'll be discussing her paper, "Oncologists' Attitudes and Practice of Addressing Diet, Physical Activity and Weight Management with Cancer Patients, Findings of an American Society of Clinical Oncology Survey of the Oncology Workforce." Welcome, Dr. Ligibel, and thanks for joining me today.
Thank you so much for having me.
So just to set the stage for our listeners, how big of a problem is obesity and physical inactivity among cancer patients? Is this something that is generally mirroring the larger problem we see in America, or is there anything different about our cancer patients?
Well, we know that obesity and inactivity are risk factors for developing a number of different malignancies. The International Agency for Research in Cancer and the World Cancer Research Fund have both analyzed observational data linking obesity, inactivity, poor dietary quality to the risk of developing malignancy, and have demonstrated really consistent evidence that there is at least 13 different malignancies where obesity, in particular, increases the risk of developing the malignancy. So if you think about the fact that obesity and inactivity are pretty prevalent in the United States, in general, and that these factors also increase the risk of developing malignancy, we find that an even higher proportion of cancer survivors are obese and inactive as compared to the general US population. We also know that treatment that patients get for some malignancies can contribute to weight gain, and also can contribute to inactivity. So you put all of these factors together, and a very large proportion of cancer survivors are at risk for obesity, inactivity, poor dietary quality, or all of those factors together.
I mean, the number that you and your co-authors mention is that almost 1/3 of cancer survivors are obese. That seems like a huge number. So clearly a major problem.
Yes, that's true. And that number has increased significantly over the last decade.
So I know that obesity contributes to cancer risk. But is there data that even treatment of cancer can be impacted by these issues?
Yes. So we know that obesity has an impact on treatment-related outcomes and, likely, on the risk of recurrence and mortality in many different diseases. Breast cancer has been the best studied, where we know that women who are obese when they're diagnosed with breast cancer actually have a 35% higher risk of dying from breast cancer compared to women who are of normal weight when they were diagnosed with breast cancer.
Similar data are emerging in other malignancies. Colorectal cancer, there has been a strong link with obesity and cancer outcomes. Prostate cancer, gynecologic cancers, there's emerging data as well. So we know that these factors can impact the risk of recurrence and mortality. But there's also evidence that suggests that people who have excess adiposity, have metabolic complications of obesity, are at higher risk of complications like poor wou
18 min