system
Given the following post, respond as if you're commenting on Reddit:
human
Do women with larger breasts have a greater chance of developing breast cancer?

Also curious about other similar scenarios, like does a morbidly obese dude with a large surface area have a greater chance of developing skin cancer? I don't fully understand what cancer is or how it develops, but at a base level I think it has to do with cells mutating or growing out of control, so if there's more of a given kind of cell in someone's body, like breast tissue or skin cells, are they at a higher statistical risk for that mutation taking place? Is a 7 foot tall person more likely to develop cancer than a 5 foot tall person since their body has more mass?
gpt
The tissues in the breast are mostly fat. While a number of cancers have been attributed to the accumulation of lipid soluble cancer causing chemicals in fatty tissues, women with "dense" breasts are usually considered higher risk of dying of cancer. Dense in this sense is interpreted as being more muscular than fatty. Typically then, "dense breasts" would tend to be smaller rather than larger. The cause of this correlation is not settled science. Some argue dense breasts are harder to compress in the mammography machines and result in lower quality images for interpretation. The basic argument there is women with smaller, dense breasts get cancer at the same rate as others, but the cancers grow longer before being detected, resulting in a higher death rate. Other's argue the higher percentage of muscle tissue in the breast causes a different hormone profile in the breast tissue that does in fact cause a higher cancer rate for women with smaller, dense breasts. Bottomline, there are theories that would suggest large breasts might be more vulnerable to cancers due to greater opportunity for cancer causing agents; but there are alternative theories that suggest the opposite.