Mechanisms of IGF 1 Mediated Regulation of Skeletal Muscle Hypertrophy and Atrophy Also, carbs play a big role in IGF 1. They raise insulin, which helps your body produce and use IGF 1 more effectively. When carbs are too low for too long, that whole system slows down, your IGF 1 LR3 Dosage Guide: Benefits, Timing, and Results i313 IGF 1 & LR3 (Build Blend) Peptide Therapies Elite Health HRT IGF 1LR3