Which type of cancer is NOT typically associated with excess fat?

Skin cancer is generally not associated with excess fat in the same way that other cancers, such as breast, prostate, and colon cancer, are linked to obesity and excessive body fat. The primary risk factors for skin cancer include exposure to ultraviolet (UV) radiation from the sun or tanning beds, rather than factors related to body weight or fat distribution.

In contrast, several studies have shown that obesity is a significant risk factor for breast cancer, particularly in postmenopausal women, due to changes in hormone levels and inflammatory markers associated with increased fat tissue. Similarly, prostate cancer risk may increase with higher body fat percentages, as obesity can influence hormone levels as well. Colon cancer is also associated with excess body fat, with research indicating that obesity increases the likelihood of developing this type of cancer due to factors related to insulin resistance and inflammation.

Thus, skin cancer stands out in this group because the links to obesity and excess fat are not present in the same way, making it the correct answer to this question.