I stumbled on this article which ostensibly (I haven't really read it carefully yet) describes how low protein and high fat intake can:
* Increased longevity via downregulation of the mTOR pathway * Increased nutrient status in regards to vitamin A * Increased metabolism by limiting protein as an energy source * Increased levels of testosterone * Decrease levels of cortisol
asked byMM (773)
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on September 22, 2010
at 11:46 PM
These ideas are getting a lot of play in the extremely-out-there health communities who practice Life Extension (LE) and/or Calorie Restriction (CR).
Much new science is coming in to show that many of the benefits of CR may in fact be coming from protein restriction. There is also a lot of speculation surrounding Methionine restriction which is an essential amino-acid found in protein. There are studies of Methionine restricted rats who show large extensions to their lifespan, to the point where many people in the life extension community are choosing the lowest methionine-content foods they can eat.
This is all getting a little technical, and typically stuff not explored in traditional Paleo circles where the focus is on simple, back to basics, traditional, ancestry, etc. But I have noticed more of these ideas popping up. I guess it is just a natural extension of the question "What is optimal health?". Personally I think much of the LE and CR community are a little off the mark--they don't focus on Paleo nearly enough! Funnily enough despite being on the cutting-edge of medicine, because they have been doing this stuff for years they are very sceptical and critical of Paleo as it is a fairly new idea and challenges some of their basic assumptions. Like average Joe on SAD there seems to be an inbuilt defence mechanism to having what you think (or know) is right to be challenged.
Here is a good article that summs it all up:
NewScientist: Eat less, live longer?
^^ If the above article doesn't work (sometimes NS allows then restricts articles) do a google search of the article title and you should find a way to read it...
on September 23, 2010
at 04:20 AM
I tend to agree that a good diet for health and longevity would limit proteins to not much more than maintenance.
My favorite blog right now is the Perfect Health Diet ( http://perfecthealthdiet.com/ ) and low protein, high fat is their premise, and it makes a lot of sense.
It's also the premise of Nora Teresa Gedgaudas in Primal body, primal mind, though she agrees that proteins are needed in greater quantity when mating/growing/performing is involved. Goes well with the idea that life is always cycling, like nights and days and the seasons and life and death and we should therefore cycle our food intake. Periods of fasting, periods of ketosis, periods of higher carbs from fruits, periods of higher carbs from starch, with the bulk of the time in low carb, low protein, high fat.
Bary Groves also has this same opinion: http://www.second-opinions.co.uk/fat-not-protein.html
As does Peter from hyperlipid and Kurt from PaNu.
All this is very interesting and could be areas where improvements can be made for health and longevity
on September 23, 2010
at 03:58 AM
The problem is, we don't know exaclty what paleo people really ate or exactly what is healthiest for us. The innuit throw muscle meat to the dogs. Maybe paleo hunters often did not have to eat a lot of protein. Maybe they were good enough hunters to not need to eat the whole animal? We don't know.
I do agree with the comment though, that it is possible that carb fueling the body for increased muscle and strength and indurance performance may indeed cause long term damage. Many athletes die young. Seems to me that the body is really designed for mostly fat burning activity and very little glycogen depleting activity. Fat burning activity makes up the vast majority of campsight and hunting life. The life of an athlete is not a natural one.
on September 22, 2010
at 09:57 PM
I think it can be pretty easy to eat a high fat, relatively low protein and carb diet. Whenever you see "high" or "low" macronutrient diets, it's always subjective. What do they define as high or low? My diet naturally ends up around 50-60% fat if I'm not trying to watch how much I eat.