Which of the following factors is NOT associated with cancer risk?

Regular physical activity is indeed not associated with an increased risk of cancer; rather, it is often linked to a reduced risk of developing certain types of cancer. Engaging in regular exercise can help maintain a healthy weight, improve immune function, and reduce inflammation, all of which are beneficial in lowering cancer risk. In contrast, smoking, excessive alcohol consumption, and exposure to environmental toxins have all been consistently linked to higher cancer risks, as they can lead to cellular damage and promote the development of cancerous cells. Therefore, the recognition of regular physical activity as a protective factor is essential in understanding cancer prevention strategies.