Well there was a study related to war time and cancer I recall that I watched in TV, the correlation was between not eating much meat and eating more of other stuff… googleing I found an article or something about it… http://rawfoodsos.com/2011/09/22/forks-over-knives-is-the-science-legit-a-review-and-critique/ scroll down to the graph and look from there… Norway had a huge drop in cardiovascular disease during ww2, those numbers are valid as far as I know, the conclusion idk.
This seems to be a decent response. http://www.sciencemediacentre.co.nz/2014/03/05/dietary-protein-health-and-mortality-experts-respond/
Oh, and the studies talked about are the following:
Just to point out, IGF-1 is a naturally occurring hormone that is vital to our bodily systems. Elevated levels of any hormone in the serum levels are usually a sign that something has gone or is going wrong. Ingestion of hormones does not effect serum levels, since basically everything is broken down into constituent components through digestion.
Also, saying “high in animal proteins” doesn’t really elucidate much. It most likely won’t apply to DIY soylent eaters since it’s a vast gulf between ingesting steak and eggs and adding whey protein to your mix.
Still, interesting stuff. I’ll have to do some digging…
Regarding the Australian study (the second one you linked), there are a couple of very glaring issues straight away:
It’s a rat study. Mice have evolved as grain eaters, so they probably don’t represent a suitable model for human nutrition.
Even setting aside #1 (which I would suggest is a show-stopper in itself), the experimental parameters used don’t seem to resemble any reasonable proxy to intelligently designed human low-carb / ketogenic diets. A properly constructed low-carb / ketogenic diet is not “high protein”: it includes only as much protein as is required for the individual’s needs, and no more. The average daily requirement for protein is a fixed amount that shouldn’t even be expressed in terms of percent total energy intake, though if it is, the amount is probably going to be in the ballpark of 20% (and shouldn’t ever exceed 35% in order to avoid toxicity).
In this study, they were feeding rats “protein packed” diets of up to 60% protein – not exactly shocking that they weren’t healthy. That doesn’t tell us anything useful about humans, or about the human health impact of consuming a reasonable baseline amount of protein, reducing or excluding carbs, and making up the energy balance with healthy, non-oxidized sources of fatty acids.
This just in: Paper may be as dangerous as smoking!
A recent study by people who do SCIENCE showed that plants, when bound together with a burning carton of cigarettes, had an alarming tendency to combust. Researchers warn that cigarettes contain many previously believed harmless materials, such as paper, that may also share this combustibility. They caution that children are exposed to paper at an even earlier age than they are cigarettes and, shockingly enough, youngsters as little as 3 and 4 are being encouraged by their teachers to use paper. Many of these “paper pushers” masquerade as “art teachers” who, unsurprisingly, may have engaged in the recreational use of cigarettes, marijuana, and other forms of paper during their college years.
“We can confidently say that paper is dangerous when used improperly,” said a SCIENCE person. “In order to avoid the dangers of paper, we urge everyone to use the nearest available computer tablet if they feel the need to write something.”
To even suggest that eating protein is as bad as smoking is pure sensationalism.
A more accurate headline for this study would have been “High protein for those between 50 years to 65 years old who have poor diet and lifestyle habits may be associated with increased cancer risk.”
A “low carb” diet high in protein but where the majority of calories come from carbs? Yep, there are already numerous studies showing that high protein diets are dangerous.
I’m still waiting for a study that shows a no carb, moderate protein, high fat diet is dangerous. But “they” seem content with implying that a ketogenic diet has nothing to do with fat.