To those who think there is a "preponderance of evidence" about
this, there isn't. Dreamerboy-one of the references you gave, was actually just a review by Wolk. He used as his source for prostate cancer, a meta-analysis of 15 studies compiled by Wu et al (shown in Table 2). His source is linked below:
/www.ncbi.nlm.nih.gov/pmc/articles/PMC4837898Wu et al. said...
Associations between intakes of meat and eggs and total prostate cancer risk were similar to those for localized prostate cancer (Table 3). Higher intake of unprocessed red or processed meat was not associated with a substantially increased risk of total, advanced, low or high-grade cancers.
As you can see in Table 3, the p values for every consumption trend they looked at proved insignificant (none were <0.05). In other words, even at the highest consumption category -- those who ate ≥120 g of red meat a day-- did not have significantly higher rates of prostate cancer. It did not matter if the meat was processed or not, and it did not make a difference on prostate cancers diagnosed as localized or advanced, or cancers found to be high grade or low grade. BTW - neither did poultry, seafood or egg consumption make a difference. The one exception was that those who ate more than 25 g of eggs a day had slightly higher risk of advanced/fatal PC. North American who ate ≥100 g of unprocessed (but not processed) red meat or ≥ 25 g of eggs a day were at slightly higher risk of advanced PC. However, people elsewhere in the world were not, indicating another environmental factor may be the real reason.
Rather than there being a preponderance of evidence against red meat, as I now hear they erroneously led people to believe at the PCRI conference, the data are very mixed and inconclusive. Here are a few studies that suggest no association:
No association with red meat, unless eaten very well doneNo association with red meat or cooking type- only with well-done meatNo association in White men, only in Black men and processed meatsTotal meat, red meat, processed meat - no statistically significant associationNo association with red or processed meat and PCNo relationship between fat or meat intake and PC in Hawaii or LAI just wanted to provide a little balance. The evidence, to the extent there is any, is weak and inconclusive. There is no proof and there never will be. If it makes someone feel better psychologically not to eat red meat, that's an excellent reason to skip McDonald's. And there certainly may be other, more substantiated health reasons to limit consumption. I would also avoid well-done meat, but I avoid that anyway. My mother destroyed great kosher steaks by cooking them to the shoe-leather stage, and that, God rest her soul, was a sin.