I want to point out that arguing that the cause is the above does not explain why young people are particularly at the most risk since all age groups would be affected by those environmental factors somewhat equally. (Except for the tide pod challenge...)

In fact -- colorectal cancer incident rates have gone down and survivorship rates are up across the general population according to SEER monitoring (https://seer.cancer.gov/statfacts/html/colorect.html).

Now what is alarming is which cancers are particularly rising: Anal cancer and Throat cancer. https://seer.cancer.gov/statfacts/html/anus.html https://seer.cancer.gov/statfacts/html/oralcav.html

As well as an uptick in prostate cancer https://seer.cancer.gov/statfacts/html/prost.html

And it is not hard to find studies supporting a link between colorectal cancer and HPV: https://pubmed.ncbi.nlm.nih.gov/23895733/. https://ascopost.com/issues/october-25-2017/could-the-rising... -- but as always there are conflicting studies.

So I think that the page needs to talk about STDs such as HPV, as a potential source. HPV in particular is attributed to cause anal (91%), cervix (91%), vaginal (75%), Oropharynx (70%), vulva (69%), and penis (63%) cancers. (https://www.cdc.gov/cancer/hpv/statistics/cases.htm).

Something to admit is that people born from 1990 onwards have more sexual partners than their predecessors, with online dating, as well as exposure to more HPV strains from around the world due to globalization. https://harmreductionjournal.biomedcentral.com/articles/10.1...