tag:blogger.com,1999:blog-4833628955058077617.post1441913401672251473..comments2024-02-20T16:22:10.042-05:00Comments on Tuit Nutrition: ITIS -- It's the Insulin, Stupid (pt 4/8)Amy B.http://www.blogger.com/profile/08471580967464668110noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-4833628955058077617.post-5959978543291086212018-10-30T15:10:59.595-04:002018-10-30T15:10:59.595-04:00There's a lot to tackle here. To keep things s...There's a lot to tackle here. To keep things short, here are my thoughts:<br />1. Regarding people in certain geographical locations having access to fruit year-round (with no cold winter when these foods would have been scarce) -- I think there are probably genetic constitutional variations in overall carbohydrate tolerance. If you look at Pacific Islanders who were eating significant amounts of fruit and starches, they were lean, robust, and healthy as heck when Weston A Price encountered them in the 1930s, before the foods of "modern commerce" had displaced them with white bread, refined sugar, etc. I do not believe, and have never written, that carbohydrate, per se, is harmful or toxic. Not even fructose. It's all about context. People who thrived on higher carb diets in the past ate and lived *very differently* from how we eat and live in many parts of the world now in the 21st Century. <br /><br />2. Variations in human body shape -- yes, if you look at various ethnicities around the world, there is quite a bit of variation in where and how much adipose we store, and even in height. (There are tribes in South America, for example, in which people are typically very short. This may have conferred some sort of advantage in the distant past that is difficult to suss out now.)<br /><br />Other than that, I'm not quite sure what you're asking. If I haven't addressed your questions adequately, feel free to write again and be more specific as to exactly what you're asking about.Tuit Nutritionhttps://www.blogger.com/profile/15708859914305178756noreply@blogger.comtag:blogger.com,1999:blog-4833628955058077617.post-18706564194015312552018-10-30T15:05:12.046-04:002018-10-30T15:05:12.046-04:00What, exactly, are you asking? I'm sorry, I ju...What, exactly, are you asking? I'm sorry, I just can't tell from what you've written here. What is your question?Tuit Nutritionhttps://www.blogger.com/profile/15708859914305178756noreply@blogger.comtag:blogger.com,1999:blog-4833628955058077617.post-14067446326565252962018-10-30T04:02:49.623-04:002018-10-30T04:02:49.623-04:00Hey Amy,
I am curious for your answer indeed. Anot...Hey Amy,<br />I am curious for your answer indeed. Another aspect that kept me wondering when I digged deeper into J. Fungs work (great tip btw), and which is probably aiming at a similar mechanism/theory is the statement:<br /><br /> "fasting does not slow down metabolism because the body needs energy to "hunt", therefore we are actually sharper in a fasted state and metabolic rate stays constant or even increases"<br /><br />when compared to "caloric restriction does lead to a lower metabolic rate".<br />Applying the hunter theory, wouldn't one think that if let's say good old great great great granny only caught one rabbit and had to share it with the entire family, a caloric restriction would occur? Or the nuts found are not sufficient to cover all needs, you get the point. The 'hunter/gatherer' theory seems to be assuming, that if there was food, there was automatically an abundance of food. Even though to me it seems much more likely for our ancestors to hunt down a couple squirrels than one big deer, potentially resulting in less than the required amount of food frequently.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-4833628955058077617.post-89566078699361102362018-10-25T08:39:42.437-04:002018-10-25T08:39:42.437-04:00Hey Isa,lots to say here. I’m headed out of town f...Hey Isa,lots to say here. I’m headed out of town for a conference this weekend. I won’t be able to write a detailed reply until after I’m home next week. Thanks for your patience. Amyhttp://www.tuitnutrition.comnoreply@blogger.comtag:blogger.com,1999:blog-4833628955058077617.post-21347502927254444912018-10-25T02:46:14.862-04:002018-10-25T02:46:14.862-04:00Hi Amy,
First of all, I absolutely love your site...Hi Amy,<br /><br />First of all, I absolutely love your site and blog. I stumbled over it a few days ago and have been digging threw your posts a lot. There are some things however where I stumble upon your reasoning and am wondering what it is that I am missing. Here you write for example:<br /><br /> "The body would see frequent and large-ish insulin spikes in summer and fall as a good thing. You would want to inhibit lipolysis for most of summer and fall. If you were breaking down a bunch of your adipose tissue during those seasons, you would be in deep trouble come the food-scarce winter. This is a perfectly good protective and survival mechanism. The problem now, as most of us recognize, is that in the modern industrialized world, the metaphorical winter never comes, but our diets and lifestyles still promote storage, storage, storage". <br /><br />How does this explanation take into account firstly, that most sweet fruits (bananas, mangos etc.) actually originate in courntries without seasonality. The fruits with lower GIs berries, cherries etc are the ones nature to the more northern/southern parts of the planet.<br /><br />Secondly, above statement would also suggest that in people with darker skin this phenomena would be less pronounced, as they do not have 'to prepare' their body for winter. Assuming of course skin color is an evolution based upon the regions the respective ancestors lived for hundreds of generations. Furthermore, you can often observe that darker skinned people do have curvier figures than lighter skinned people. I don't mean they are bigger, but when you compare both ends of the spectrum, lighter have less curves they put on adipose tissue more spread over the entire body (not trying to generalize anything, well I am, what I am saying is that exceptions definitely exist, but that there is a broader tendency). However, wouldn't your statement suggest that it should be the other way around as food is available all year around, thus no fat storage required?<br /><br />I hope you'll have the time to write an response, as I am really curious about your thoughts on this.<br /><br />Cheers, Isa<br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-4833628955058077617.post-70920421024084985752015-10-29T11:32:39.571-04:002015-10-29T11:32:39.571-04:00Sedge warblers are sparrow-sized insectivorous bir...Sedge warblers are sparrow-sized insectivorous birds that breed in Europe. At the end of the breeding season they DOUBLE their body weight to fuel a trans-Saharan migration. They do this by eating high-carb insects - plum reed aphids which are basically little protein bags full of sugary plant sap.<br /><br />I predict that if anyone studied their physiology they would switch on insulin resistance for the food storage and then switch it off again in order to metabolise the stored fat.<br /><br />Likewise for some thrushes, blackcaps, etc. which turn from insects to berries and fruit in autumn/winter to gain fat to fuel them through food shortages and hard weather movements.chris cnoreply@blogger.comtag:blogger.com,1999:blog-4833628955058077617.post-49467894195308590432015-10-17T21:30:30.452-04:002015-10-17T21:30:30.452-04:00#4 was another great chapter, very clear and info... #4 was another great chapter, very clear and informative, keep'em comin. The genes against jeans evolutionary clash was a brilliant homophone crack.... Do you scream when you see ice cream?Paulo A Frankenoreply@blogger.com