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Could you point me at any medical textbook that describes what a carbohydrate deficiency might look like in human beings?

Sabrina Biodore

State Diploma in Nursing, paramedical training, and certificates in writing and journalism.

I'll get my nutrition advice from elsewhere, thank you.

smoked, cured, etc meat is a Class 1 Carcinogen

Have you read the papers behind the claim? For your convenience, here is Volume 114 of the IARC Monographs. If you click "download free PDF" it will be saved on your computer.

https://publications.iarc.who.int/564

Some quick thoughts:

Pages 143-151 show that the methodology is Food Frequency Questionnaires with no control for confounding. I think this alone is sufficient to dismiss this finding. Can you remember what you had for dinner 30 days ago?

Page 493: Risk-ratio described as 1.17 per 100 g/day red meat and 1.18 per 50 g/day processed meat. By the Bradford Hill criteria, this is within measurement error. So we can once again dismiss this finding.

Page 493, again:

However, chance, bias, or confounding could not be ruled out for consumption of red meat, as no association was observed in several of the larger studies.

Not my words, theirs. So they didn't control for any confounding, such as healthy user bias, and in fact are aware of the fact that they can't even establish association in the studies.

Page 498: They get biological facts wrong. Heme iron is not a pro-oxidant. It is the only biologically available form of iron for human beings since it is encapsulated and non-toxic. It really makes you wonder where they get their information from.

Btw, half of the major studies in the IARC paper are null. Half!

I encourage you to read the primary studies and critically evaluate them. You'll find the same thing I did. All the "studies" in "human nutrition science" are epidemiological, have weak hazard ratios, and cannot inform us either which way.