Also, mice carrying a genetic mutation that lack one of the igf1r alleles ( igf1r +/ ) show a 10 % reduction in post-natal growth, insulin resistance and glucose intolerance [237]
The problem started in the last decade with the availability of highly efficient oral and injectable forms of B12
In life-threatening cases, 5,000,000mcg of B12 is given directly to the veins within a 15 minute window
That is the proposed reason it does not raise IGF-1 levels or impair insulin sensitivity in animal work, in contrast to full-length growth hormone
What is the Vitamin B12 Injection
The primary outcomes are scores on the cognitive, language and motor subscales of the Bayley Scales of Infant and Toddler Development, Third Edition, measured at 6 and 12 months of age, and growth (length and weight) measured at 6 and 12 months of age