The positive effects of IGF-1 on the rats continued for months after the rats stopped getting the supplemental hormone, whereas the exercising rats immediately lost size and strength as soon as they stopped exercising. In another study the muscle fibers of 27-month old rats old age for rats that were given IGF-1 during middle age, exhibited no deterioration of muscle fibers that indicate the classic and inevitable signs of aging
Guevara-Aguirre J, Rosenbloom AL, Vaccarello MA, Fielder PJ, de la Vega A, Diamond FB, Rosenfeld RG: Growth hormone receptor deficiency (laron syndrome): clinical and genetic characteristics
Norethisterone may cause side effects such as: headache nausea (feeling sick) breast tenderness changes in mood or sex drive unexpected bleeding When taking the combined pill, you may experience some side effects, such as: nausea or vomiting (feeling or being sick) dizziness breast tenderness mild headaches mood changes lower sex drive a change in your bleeding pattern (in the first 3 months of use) Both the combined pill and norethisterone can increase your risk of blood clots but if you have no other risk factors for blood clots your overall risk remains low
Ongoing research will continue to refine its optimal applications, combination strategies and long term outcomes for growth hormone releasing peptides
While both peptides have been studied individually, combination research offers specific guidance
Efficacy studies: Sndergrd et al