"particularly well-done red meat, such as fried or barbecued...'
If I remember correctly it was "well done" in the sense of being burnt/charred/blackened that was dangerous. Who cooks a steak like that anyway?
"Fiber"
I never understood the concept of(intentionally) eating anything that you couldn`t digest. No logic in that? Hence I`ve never bought into the "add lots of insoluble fiber" argument.
Soluble fiber(and normal amounts of insoluble) is another thing.....it just happens to be part of the bigger package called nutrient rich fruits and veggies and serves other purposes other than making you "bog" down.
IMHO