How does it increase the risk of cancer?

Angela Lee:

I don't see how in any way protein contributes to cancer. Not at all. If you're talking red meat being associated with colon cancer then yes. But up to today, I haven't read in any medical book that lists high protein diet as a risk factor for cancer.

So no, the onus is not on me to search for proof because I think what you're spewing is crap.

I'd happily eat my words (and my hat) if you can point me to a reputable peer review journal that supports this finding you claim to be true.

Oh wow. Whey protein has near 100% BV and is the most easily digested protein. In fact, a trial of whey-protein based formula can be used to manage cow's milk protein intolerance in infants. So no, 'too much protein' does not make 'digestion more difficult'.

Fatty layer of cancer cells? Immune cells unable to penetrate and destroy them? I don't think you have a basic understanding of the pathogenesis of cancer and cancer immunology. I'll educate you with a simplistic take. Most cells becoming 'malignant' destroy themselves. When these fail safe mechanisms fail, it proceeds to proliferate unchecked, picking up errors and transforming into 'cancer'. These 'cancer' cells lack the MHC I molecule which is detected by NK Cells. Your immune system takes most of these cancer cells down.

Also, just a final nail in the coffin perhaps, protein is much less implicated in the 'oxidative damage theory' when compared to carbohydrates. It was postulated that carbohydrate restriction resulted in longer lifespan in mice (read: subjects in biogerontology), possibly due to less oxidative damage. In fact, high protein low carb diets were shown to result in a longer lifespan in these experimental models.

I guess such knowledge is not expected of you because after all this is the internet. People are free to say whatever they want and believe it to be the truth. Just because it sounds logical doesn't mean it is true.

Plainly because I do not see how protein consumption increases the risk of cancer. And I don't need to research, this is knowledge that I already have and understand well enough.

I've never heard 'reduce your protein intake' as part of an oncology recommendation. In fact, if anything you should up it to prevent malnutrition because of the increased metabolic rate.

So I put it to you then, please educate me as to how protein consumption increases the risk of cancer? Mind you, your previous understanding of how the immune system works against cancer cells is wrong on all counts.

I'm happy to learn if you have something new to teach. Really. And please, back it up with a source. I can easily source mine if you need it.