1) everyone in the study, average age 55 at the start was at risk of bowel cancer - a risk of 0.5% over 6.7 years.
cancerresearchuk.org/about-us/cance…
That's an increase in risk of 0.1% (or 20% in relative terms. But wait, there's more.
academic.oup.com/ije/advance-ar…
That's half the planet being scared right now by an association only seen in men.
Why wasn't this part reported properly?
Remember, average age at start was 55, so iron loss during menstruation was not an important factor.
An important fact if you think this study has any meaning.
auckland.ac.nz/en/news/2019/0…