tag:blogger.com,1999:blog-8859456735165996893.post8761249473610944735..comments2024-03-28T02:36:04.078-07:00Comments on Health Correlator: Growth hormone secretion drops with age, but not exactly in the way you would expectNed Kockhttp://www.blogger.com/profile/02755560885749335053noreply@blogger.comBlogger9125tag:blogger.com,1999:blog-8859456735165996893.post-66634316073490450412014-10-01T04:43:27.884-07:002014-10-01T04:43:27.884-07:00Most people wont know their HGH levels are low, es...Most people wont know their HGH levels are low, especially when in their late 40's and 50's people will just think of it as a hormonal imbalance however HGH like it or not plays a huge role in energy levels and the best thing you can do is exercise, lots of cardio and heavy weight training.Rod Collinshttp://gh-advanced.comnoreply@blogger.comtag:blogger.com,1999:blog-8859456735165996893.post-31021348837934110842011-03-29T08:56:20.559-07:002011-03-29T08:56:20.559-07:00I think that the people didn't know about it ...I think that the people didn't know about it because they do not have the chance of thinks in that many bar charts show secretion patterns grouped by age ranges during a 24 h period !!22ddviagra onlinehttp://www.xlpharmacy.com/noreply@blogger.comtag:blogger.com,1999:blog-8859456735165996893.post-52146709259361705252010-06-05T07:38:17.251-07:002010-06-05T07:38:17.251-07:00Hi Byron.
Tyrosine supplementation might have hel...Hi Byron.<br /><br />Tyrosine supplementation might have help reduce stress, which reduced cortisol levels. Elevated cortisol levels inhibit muscle growth and accelerate muscle catabolism.<br /><br />In this sense, tyrosine supplementation may have had an effect similar to that of behavioral stress management.Ned Kockhttps://www.blogger.com/profile/02755560885749335053noreply@blogger.comtag:blogger.com,1999:blog-8859456735165996893.post-43111571338843767392010-06-05T07:10:55.345-07:002010-06-05T07:10:55.345-07:00Great post and just in time.
2 weeks ago I started...Great post and just in time.<br />2 weeks ago I started with l-tyrosine. Just for mood/stress issues. Side effect is an unexpected muscle growth. With more than one year of zero success by weight lifting a huge surprise. After more than 14 years LC and since one year VLC/keto I can´t believe that there was a amino deficiency. Maybe somekind of kickstart for a slow metabolism. Greetings.Byronnoreply@blogger.comtag:blogger.com,1999:blog-8859456735165996893.post-21314719274127295772010-06-05T07:08:51.854-07:002010-06-05T07:08:51.854-07:00Hi Jamie.
Very good points. And the data in this ...Hi Jamie.<br /><br />Very good points. And the data in this post is definitely cross-sectional. I would like to get my hands on extensive longitudinal data, but it is not easy to find.<br /><br />Even the good longitudinal studies available, like the Framingham Heart Study, have only data on a very limited set of health markers. For example, for mean glucose, they have random glucose measures:<br /><br />http://healthcorrelator.blogspot.com/2010/04/blood-glucose-control-before-age-55-may.html<br /><br />The scenario you describe fits well, generally speaking, with the graphs on this plot though. A drop of GH in the 40s, and then some lifestyle adaptations bringing GH levels up in the 50s.Ned Kockhttps://www.blogger.com/profile/02755560885749335053noreply@blogger.comtag:blogger.com,1999:blog-8859456735165996893.post-23787871643876915242010-06-04T19:25:57.205-07:002010-06-04T19:25:57.205-07:00Good post Ned. One thing I picked up on about a d...Good post Ned. One thing I picked up on about a decade ago when I completed my ex physiology degree was that a lot of the modelling that suggested various parameters declined with age (GH, Testosterone, etc), were based on cross-sectional samples. That is, they would take a man in his 20's, one in his 30's, one in his 40's, and so on, and measure the differences. From this type of sampling, it was suggested many of these hormones decline with age. Similar sampling was done with VO2max.<br /><br />However, when you begin to map out how people's lifestyles change over time, one can often see that it is lifestyle & dietary factors that might be driving the biggest part of the decline.<br /><br />A man in his 20's might still be relatively active, but the likes of alcohol intake increases, there are lots of late nights, diet might go out the window, etc.<br /><br />Then in their 30's they are typically beginning to work long hours with work, starting a family (so disrupted sleep patterns), doing less physical activity.<br /><br />In their 40's they are perhaps at a management level with career so have a significant amount of stress, alcohol intake may begin to rise again, the exercise of choice (if it is done) is chronic cardio, carb intake may be increasing as does waistline...<br /><br />In their 50's & 60's they might be beginning to feel their own mortality somewhat and begin to make various lifestyle adaptations, including less stress, more exercise, better eating, etc - this mighth explain the increase in GH seen in this group.<br /><br />When someone does a longitudinal study that follows a sample group over a 40-50 year period, getting the group to maintain primal-type living and shows a large decline over the ageing period, then I might believe this to be the case. At present, I'm not convinced that declines in hormone profiles & other physiological parameters are as big or as tied to age as what we have been historically lead to believe.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8859456735165996893.post-7649052790831829242010-06-04T19:00:35.136-07:002010-06-04T19:00:35.136-07:00Thanks Anonymous.
I agree with you re. the sample...Thanks Anonymous.<br /><br />I agree with you re. the sample Kindke. The variability among the young folks reflects a number of factors, as you point out. One of those factors is the MUCH higher GH levels in young women compared with young men.Ned Kockhttps://www.blogger.com/profile/02755560885749335053noreply@blogger.comtag:blogger.com,1999:blog-8859456735165996893.post-70388858356696428562010-06-04T14:26:53.890-07:002010-06-04T14:26:53.890-07:00I dont like the bar graphs, Its silly to group 26 ...I dont like the bar graphs, Its silly to group 26 yr olds with 35 yr olds, obviously your growth hormone doesnt just instantly drop by half on your 26th birthday.<br /><br />And it looks like they had a really small sample size for the 36-60 age group.<br /><br />Overall its comforting to know that growth hormone, although while it does decline with age, that the drop is not so aggressive as one would expect. <br /><br />Whats surprising is the very high variance in the 15-25 age group. I reckon this is good evidence that lifestyle and diet play a big role in overall growth hormone levels ( as we already mostly know ). I guess genetics too but I hate discussing something which is essentially unchangeable :)<br /><br />Btw Ned great blog, look forward to your next post.Kindkehttps://www.blogger.com/profile/15841418412425329998noreply@blogger.comtag:blogger.com,1999:blog-8859456735165996893.post-48764372026886587122010-06-04T10:01:34.131-07:002010-06-04T10:01:34.131-07:00A comment: I just wanted to let you know that I a...A comment: I just wanted to let you know that I appreciate your blog and the work you do. You also leave insightful comments on other blogs in the general paleo-sphere (which is how I was directed to your blog in the first place).Anonymousnoreply@blogger.com