I'm a 24 year old male and fairly recently found out that I have abnormally low IGF-1 levels. Mine is 90 (ng/mL) whereas the average range for my age is from 116-353 (ng/mL). I've always been pretty skinny and have had a hard time gaining mass. I started at 125lbs and after about two years of lifting five days a week pretty consistently, I'm currently at ~150lbs. I've made a fair amount of progress, but it's been a very long process and I feel that I've plateaued, so I'm trying to determine if this is positively correlated with my low IGF-1.
I read on a forum that low IGF-1 levels ultimately do not impact ones ability to induce muscle growth. The forum has a source for experimentation confirming that this is what researchers in the study concluded. I can post specific findings within the source on here, but it's very long so I'll do so without unless requested. However, here's the text which was referenced:
1: J Physiol. 2007 Nov 1; [Epub ahead of print] A functional insulin-like growth factor receptor is not necessary for load-induced skeletal muscle hypertrophy. Spangenburg EE, Leroith D, Ward CW, Bodine SC. University of Maryland.
Ultimately I'm asking if anyone may have knowledge on this subject and if low IGF-1 is potentially inhibiting my ability to build mass? Also, any suggestions on ways in which I can approach this would be greatly appreciated (i.e., diet change, lifestyle change, prescription of growth hormone, do nothing, etc...)
I don't mean for this question to be too specific towards me. I'm asking this in the hopes that others with a similar issue can potentially find this and reference it in the future. Information online in regard specifically to abnormally low IGF-1 levels and building mass appears to be relatively limited.
Thank you in advance.