is it healthier to eat no meat?

[arewethereyet]

Bold mine - where do you get this information?  My breast cancer doctor is a researcher as well.  She didn't ever mention the consumption of meat during the five years that I saw her.

https://en.wikipedia.org/wiki/Heme#Cancer
A 2019 review found that heme iron intake is associated with increased breast cancer risk.

Okay, an actual citation.

Anyway - that looks like newish information.  When I was diagnosed it was with a newish kind of breast cancer and it was difficult to find information.

For me, I run toward being anemic.  I either don't consume enough iron or don't absorb enough iron.  

As far as I can tell, with cancer, there's a risk with absolutely everything.