Comments on: Bodyweight Regulation: Leptin Part 6 http://www.bodyrecomposition.com/fat-loss/the-hormones-of-bodyweight-regulation-leptin-part-the-last.html Training and Nutrition advice, straight from the monkey's mouth. Sun, 22 Jan 2012 21:56:52 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: lylemcd http://www.bodyrecomposition.com/fat-loss/the-hormones-of-bodyweight-regulation-leptin-part-the-last.html/comment-page-1#comment-5182 lylemcd Thu, 15 Jul 2010 17:42:20 +0000 http://www.bodyrecomposition.com/blog/2008/09/01/the-hormones-of-bodyweight-regulation-leptin-part-the-last/#comment-5182 The deficit will overcome the carbohydrate intake per se. The body appears to be primarily responsive to caloric availability which is intake - output. The deficit will overcome the carbohydrate intake per se. The body appears to be primarily responsive to caloric availability which is intake – output.

]]> By: Jonathan Williams http://www.bodyrecomposition.com/fat-loss/the-hormones-of-bodyweight-regulation-leptin-part-the-last.html/comment-page-1#comment-5175 Jonathan Williams Wed, 14 Jul 2010 01:44:08 +0000 http://www.bodyrecomposition.com/blog/2008/09/01/the-hormones-of-bodyweight-regulation-leptin-part-the-last/#comment-5175 Lyle, Is there any research on whether leptin levels are affected by absolute carb intake? What I'm talking about is individuals who get some of their caloric deficit through large amounts of calorie expenditure (e.g. running or other endurance activities, in addition to weightlifting), and thus have higher than normal carb intake despite maintaining a caloric deficit. Would leptin production in such people still be stimulated by the large amount of carb intake (for example, on exercise days), even though a caloric deficit is consistently maintained? Best, Jonathan Lyle,
Is there any research on whether leptin levels are affected by absolute carb intake? What I’m talking about is individuals who get some of their caloric deficit through large amounts of calorie expenditure (e.g. running or other endurance activities, in addition to weightlifting), and thus have higher than normal carb intake despite maintaining a caloric deficit. Would leptin production in such people still be stimulated by the large amount of carb intake (for example, on exercise days), even though a caloric deficit is consistently maintained?

Best,
Jonathan

]]> By: lylemcd http://www.bodyrecomposition.com/fat-loss/the-hormones-of-bodyweight-regulation-leptin-part-the-last.html/comment-page-1#comment-4390 lylemcd Tue, 02 Mar 2010 23:13:09 +0000 http://www.bodyrecomposition.com/blog/2008/09/01/the-hormones-of-bodyweight-regulation-leptin-part-the-last/#comment-4390 Refeeds and full diet break for the win. Refeeds and full diet break for the win.

]]> By: James "Scott" Murphy http://www.bodyrecomposition.com/fat-loss/the-hormones-of-bodyweight-regulation-leptin-part-the-last.html/comment-page-1#comment-4386 James "Scott" Murphy Sun, 28 Feb 2010 23:44:46 +0000 http://www.bodyrecomposition.com/blog/2008/09/01/the-hormones-of-bodyweight-regulation-leptin-part-the-last/#comment-4386 Hi Lyle, I am working towards getting down to mid single digit body fat. Right now I am about 10% and I am feeling the effects of the hormonal responses you have been mentioning in your articles. I have come to the conclusion, that I am just going to have to bite the bullet and deal with the hunger, deal with the lowered immune system, and suck it up. Because I honestly don't see any easy answer or solution in everything I have read. Getting very lean is hard. Done deal. I must accept it and move forward. I know the rewards will be great! Hey maybe I can get my brain to release some more dopamine thinking about the rewards of becoming very lean:) Thanks again for your very informative articles. James Scott Hi Lyle, I am working towards getting down to mid single digit body fat. Right now I am about 10% and I am feeling the effects of the hormonal responses you have been mentioning in your articles. I have come to the conclusion, that I am just going to have to bite the bullet and deal with the hunger, deal with the lowered immune system, and suck it up. Because I honestly don’t see any easy answer or solution in everything I have read. Getting very lean is hard. Done deal. I must accept it and move forward. I know the rewards will be great! Hey maybe I can get my brain to release some more dopamine thinking about the rewards of becoming very lean:)

Thanks again for your very informative articles.

James Scott

]]> By: Dr. Ron http://www.bodyrecomposition.com/fat-loss/the-hormones-of-bodyweight-regulation-leptin-part-the-last.html/comment-page-1#comment-2567 Dr. Ron Thu, 26 Mar 2009 22:02:30 +0000 http://www.bodyrecomposition.com/blog/2008/09/01/the-hormones-of-bodyweight-regulation-leptin-part-the-last/#comment-2567 I've put together quite a collection of many of the applicable leptin studies, particulary as they apply to leptin resistance. You do a great job with your site, feel free to access the studies if you need to www.LeptinResearch.org I’ve put together quite a collection of many of the applicable leptin studies, particulary as they apply to leptin resistance. You do a great job with your site, feel free to access the studies if you need to http://www.LeptinResearch.org

]]> By: admin http://www.bodyrecomposition.com/fat-loss/the-hormones-of-bodyweight-regulation-leptin-part-the-last.html/comment-page-1#comment-2337 admin Thu, 26 Feb 2009 17:10:53 +0000 http://www.bodyrecomposition.com/blog/2008/09/01/the-hormones-of-bodyweight-regulation-leptin-part-the-last/#comment-2337 The extremely elevated leptin that occurs secondary to obesity has little to do with what I'm talking about (dealing with the drops in leptin on a diet). So we're talking about totally different things. But excessive leptin (again, secondary to obesity) cause a number of problems. Again, no real relevance to the topic of this series. As well, if you read the abstract of the fructose paper, they provided 60% fructose to rats for 6 months. That is so non-physiological as to be 100% irrelevant. In a typical human diet assuming 2700 calories, 60% fructose would be 400 grams of fructose per day, every day, for 6 months. No human could eat that much fructose, the malabsorption from straight fructose would prevent it. And if they got it, from say, 800 grams of sucrose, I daresay that the 3200 calories from table sugar would cause bigger issues than what that paper purports to be about. So the paper means nothing even if the internet keeps trotting it out. And of course there is 'little talk of Vitamin D', it was a series about freaking leptin. Lyle The extremely elevated leptin that occurs secondary to obesity has little to do with what I’m talking about (dealing with the drops in leptin on a diet). So we’re talking about totally different things.

But excessive leptin (again, secondary to obesity) cause a number of problems. Again, no real relevance to the topic of this series.

As well, if you read the abstract of the fructose paper, they provided 60% fructose to rats for 6 months. That is so non-physiological as to be 100% irrelevant. In a typical human diet assuming 2700 calories, 60% fructose would be 400 grams of fructose per day, every day, for 6 months. No human could eat that much fructose, the malabsorption from straight fructose would prevent it.

And if they got it, from say, 800 grams of sucrose, I daresay that the 3200 calories from table sugar would cause bigger issues than what that paper purports to be about.

So the paper means nothing even if the internet keeps trotting it out.

And of course there is ‘little talk of Vitamin D’, it was a series about freaking leptin.
Lyle

]]> By: Ted Hutchinson http://www.bodyrecomposition.com/fat-loss/the-hormones-of-bodyweight-regulation-leptin-part-the-last.html/comment-page-1#comment-2330 Ted Hutchinson Thu, 26 Feb 2009 14:52:59 +0000 http://www.bodyrecomposition.com/blog/2008/09/01/the-hormones-of-bodyweight-regulation-leptin-part-the-last/#comment-2330 http://www.ncbi.nlm.nih.gov/pubmed/19235038 Association of Leptin, 25-Hydroxyvitamin D, and Parathyroid Hormone in Women This paper shows leptin levels adversely affect 25(OH)D metabolism. Fructose-induced leptin resistance exacerbates weight gain in response to subsequent high-fat feeding. http://www.ncbi.nlm.nih.gov/pubmed/18703413 Chronic fructose consumption caused leptin resistance, I find very little evidence that the impact of vitamin d status on glucose metabolism and insulin sensitivity has been considered here. http://www.ncbi.nlm.nih.gov/pubmed/19235038
Association of Leptin, 25-Hydroxyvitamin D, and Parathyroid Hormone in Women
This paper shows leptin levels adversely affect 25(OH)D metabolism.

Fructose-induced leptin resistance exacerbates weight gain in response to subsequent high-fat feeding. http://www.ncbi.nlm.nih.gov/pubmed/18703413
Chronic fructose consumption caused leptin resistance,

I find very little evidence that the impact of vitamin d status on glucose metabolism and insulin sensitivity has been considered here.

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