Related Experiment Video
Updated: Jun 26, 2026
07:26
Conducting Maximal and Submaximal Endurance Exercise Testing to Measure Physiological and Biological Responses to Acute Exercise in Humans
Published on: October 17, 2018
Physical activity and cancer prevention--data from epidemiologic studies.
1Division of Preventive Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02215, USA. ilee@rics.bwh.harvard.edu
Medicine and Science in Sports and Exercise
|November 6, 2003
Summary
Regular physical activity significantly lowers the risk of developing colon and breast cancers by 20-40%. Consistent moderate- to vigorous-intensity exercise is recommended for cancer prevention.
Area of Science:
- Epidemiology
- Preventive Medicine
- Oncology
Background:
- Physical activity is a modifiable lifestyle factor with potential implications for cancer risk.
- Understanding the relationship between exercise and cancer prevention is crucial for public health initiatives.
Purpose of the Study:
- To systematically review existing epidemiologic studies on the association between physical activity and cancer risk.
- To determine if physical activity plays a role in preventing specific types of cancer.
Main Methods:
- A comprehensive review of published epidemiologic studies was conducted.
- Data were analyzed to assess the relationship between physical activity levels and cancer incidence.
Main Results:
- Physically active individuals show a 30-40% reduced risk of colon cancer and a 20-30% reduced risk of breast cancer.
- A dose-response relationship exists, with higher activity levels correlating with lower cancer risk.
- Physical activity showed no association with rectal cancer risk, inconsistent results for prostate cancer, and limited data for lung and other cancers.
Conclusions:
- Physical activity is strongly associated with a reduced risk of developing certain cancers, notably colon and breast cancer.
- Recommendations for cancer prevention should emphasize regular moderate- to vigorous-intensity physical activity.
Related Concept Videos
02:59Cancer Prevention
Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
Some...
01:30Preventive Healthcare Services
Preventive healthcare services keep people healthy via frequent check-ups, screening, and counseling. They primarily aid in disease prevention rather than treating an acute or chronic illness. Preventive treatment also keeps individuals productive and energetic, allowing them to work well into their retirement years. Examples of preventive care services include:
02:59Cancer Prevention
Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
Some...
01:25Statistical Methods for Analyzing Epidemiological Data
Epidemiological data primarily involves information on specific populations' occurrence, distribution, and determinants of health and diseases. This data is crucial for understanding disease patterns and impacts, aiding public health decision-making and disease prevention strategies. The analysis of epidemiological data employs various statistical methods to interpret health-related data effectively. Here are some commonly used methods:
01:21Cancer Survival Analysis
Cancer survival analysis focuses on quantifying and interpreting the time from a key starting point, such as diagnosis or the initiation of treatment, to a specific endpoint, such as remission or death. This analysis provides critical insights into treatment effectiveness and factors that influence patient outcomes, helping to shape clinical decisions and guide prognostic evaluations. A cornerstone of oncology research, survival analysis tackles the challenges of skewed, non-normally...
01:20Lifestyle Factors and Health
Lifestyle factors play a critical role in maintaining overall health and preventing chronic diseases. Key elements, such as regular physical activity, a nutritious diet, and abstinence from smoking, can significantly enhance physical, mental, and emotional well-being while reducing the risk of several life-threatening conditions.
Benefits of Physical Activity
Physical activity, whether through structured exercise or casual activities like walking, biking, or dancing, is a cornerstone of a...
Benefits of Physical Activity
Physical activity, whether through structured exercise or casual activities like walking, biking, or dancing, is a cornerstone of a...