The Beginning of the End of the Beef Industry?

Re:The Beginning of the End of the Beef Industry? by chrisco255 on Wednesday July 31, 2019 @05:41PM (#20578871)

You made a couple of invalid claims here:

1) Canola oil is one of the healthier oils. 2) Monounsaturated fats help fight heart disease. 3) Naturally occurring trans fat is the same as industrial trans fat 4) Red meat has health risks

EDIT, included sources, with comments: [1] Canola oil may have dramatic negative effect on weight gain and brain health: "Effect of canola oil consumption on memory, synapse and neuropathology in the triple transgenic mouse model of Alzheimer’s disease" https://www.nature.com/articles/s41598-017-17373-3?error=dat...

[2] No clear benefits of MUFA-rich diets: "Monounsaturated Fatty Acids and Risk of Cardiovascular Disease: Synopsis of the Evidence Available from Systematic Reviews and Meta-Analyses" https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3546618/

[3] High trans fat intake associated with lower sudden cardiac death: "Natural trans fat, dairy fat, partially hydrogenated oils, and cardiometabolic health: the Ludwigshafen Risk and Cardiovascular Health Study" https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4816962/

[4] Claims on red meat risks that are limited to epidemiological studies (surveys) that are unreliable, do not factor for confounding variables, and do not conclusively prove anything. Keto diet, for example, has shown to lower cardiovascular risk factors: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5452247/

[ Parent | on HN ]

Re:The Beginning of the End of the Beef Industry? by drdrey on Wednesday July 31, 2019 @06:16PM (#20579114)

Red meat is classified as probably carcinogenic to humans by the WHO.

https://www.who.int/features/qa/cancer-red-meat/en/

[ Parent | on HN ]

Re:The Beginning of the End of the Beef Industry? by chrisco255 on Wednesday July 31, 2019 @06:27PM (#20579241)

"This recommendation was based on epidemiological studies suggesting that small increases in the risk of several cancers may be associated with high consumption of red meat or processed meat."

Epidemiological studies are surveys. They are not scientific proof of anything. This is an incredulous position to be taken by the WHO and makes me seriously question their values. They state they are small increases of risk, but do not even go into confounding variables inherent in surveys. True science isolates a variable and proves that there is a causation. It does not do so by correlation.

[ Parent | on HN ]

Re:The Beginning of the End of the Beef Industry? by jdietrich on Wednesday July 31, 2019 @06:44PM (#20579376)

You just cited an epidemiological study and an evidence review based mainly on epidemiological studies. What do you actually believe?

[ Parent | on HN ]

Re:The Beginning of the End of the Beef Industry? by chrisco255 on Wednesday July 31, 2019 @08:39PM (#20580177)

I believe that nutrition science is pretty dubious because it mainly relies on epidemiological studies. The extraordinary claims that are touted as fact are numerous. This is why we get many conflicting studies on cholesterol, fats, carbs, etc. It's very, very difficult to isolate one variable in nutrition epidemiological studies and attribute them to correlations in population outcomes. The one major success story for epidemiological studies was smoking and lung cancer. Of course, difference there is that smoking is binary: one either smokes or they don't. They may smoke more or less...but the variables are pretty low. Whereas dietary intake is diverse and no two people eat the same exact diet.

[ Parent | on HN ]

Re:The Beginning of the End of the Beef Industry? by lxmcneill on Wednesday July 31, 2019 @05:50PM (#20578923)

Would either of you please be so kind as to cite your sources?

[ Parent | on HN ]

Re:The Beginning of the End of the Beef Industry? by artimaeis on Wednesday July 31, 2019 @06:46PM (#20579392)

So I can't claim to be an expert in this subject -- I've got an acute interest in it but am no professional.

Regarding monounsaturated fats I was going off of some offhand knowledge -- while the AHA agrees with the claim generally[1], it looks like the truth may be more complicated[2].

Regarding the general un-healthiness of red meats:

* There are [3] numerous [4] studies [5] showing a link to an increased mortality rate.

* Red meat was categorized as Group 2A (probably carcinogenic to humans) by the WHO[6]

If there's more claims I made here that I can help to cite I'd be happy to.

[1] - https://www.heart.org/en/healthy-living/healthy-eating/eat-s...

[2] - https://www.hsph.harvard.edu/news/features/monosaturated-fat...

[3] - https://www.bmj.com/content/357/bmj.j1957

[4] - https://jaoa.org/article.aspx?articleid=2517494

[5] - https://web.archive.org/web/20120313084043/http://archinte.a...

[6] - https://www.who.int/features/qa/cancer-red-meat/en/

[ Parent | on HN ]

Re:The Beginning of the End of the Beef Industry? by gdyefd0897 on Thursday August 01, 2019 @03:50AM (#20581881)