Muscle Growth, Hypertrophy, and Regeneration: Studies show that IGF-1 LR3 helps muscles grow and repair. It does this by encouraging muscle cells to multiply, develop, and activate satellite cells. This also boosts protein production in muscles and aids in their repair (1).
Research also shows that IGF-1 LR3 activates the PI3K/Akt/mTOR pathway. This boosts protein synthesis and stops muscle breakdown by blocking pathways like NF-κB and Smad signaling. It also improves blood flow and angiogenesis, which helps with tissue repair. Together, these actions make IGF-1 LR3 effective for muscle recovery and growth (2).
Improved Recovery & Tissue Repair: Research has shown that IGF-1 LR3 significantly enhances recovery and tissue repair by promoting cell proliferation, matrix synthesis, and regeneration. In muscle, IGF-1 accelerates repair after atrophy or damage, reducing muscle injury markers and boosting regeneration through increased MyoD expression and satellite cell activation (3).
It also improves nerve regeneration, enhancing axon growth, myelination, and neuromuscular junction preservation (4). Additionally, IGF-1 supports tendon healing by stimulating collagen I production and tenocyte proliferation, improving structural integrity and recovery outcomes (5).
Body-Composition Effects: Fat Loss and Lean Mass Preservation: Research suggests that IGF-1 LR3 supports fat loss and lean mass preservation by influencing body composition. In a study, IGF-1 levels were inversely correlated with visceral fat in obese females, reflecting reduced intra-abdominal fat mass.
During moderate calorie restriction, IGF-1 levels temporarily increased, aiding fat loss while preserving lean tissue. Additionally, IGF-1 was inversely associated with blood glucose levels, highlighting its role in metabolic regulation and promoting healthier body composition during weight loss efforts (6).
Improved Nutrient Absorption and Metabolic Benefits: Research suggests IGF-1 LR3 enhances nutrient uptake and metabolic function by promoting amino acid and glucose absorption into muscle cells, supporting anabolic growth. Its insulin-like effects improve glucose metabolism, potentially aiding in conditions like metabolic syndrome.
Studies link IGF-1 deficiency to impaired lipid profiles, insulin resistance, and cardiovascular risks. IGF-1 replacement therapy, within physiological ranges, may restore metabolic balance, improving carbohydrate and lipid metabolism while supporting overall metabolic health and nutrient utilization (7).
Neuroprotective Effects: Research indicates that IGF-1 LR3 offers neuroprotective benefits by promoting brain development, synaptic plasticity, and neuronal survival. It activates PI3K/Akt and MAPK pathways, preventing neuronal death caused by amyloidogenesis, glucose deprivation, neuroinflammation, and apoptosis (8).
Studies show IGF-1 supports cognitive function, combats neurodegenerative processes, and enhances synaptic formation and autophagy. Its ability to cross the blood-brain barrier makes it a promising therapeutic target for neurodegenerative and neuropsychiatric disorders, potentially mitigating age-related cognitive decline and neurological dysfunction (9).
Potential Anti-Aging Benefits: Research indicates IGF-1 LR3 supports anti-aging by enhancing skin health and reducing visible signs of aging. Studies show that higher IGF-1 bioavailability, measured by the IGF-1 to IGFBP3 ratio, is associated with lower perceived age and reduced skin wrinkling.
IGF-1 promotes collagen expression and inhibits collagenases, preserving skin elasticity and structure. By improving fibroblast function and reducing wrinkle formation, IGF-1 LR3 may help maintain youthful skin and slow the visible effects of aging (10).
Regulation of the Immune System: Research indicates that IGF-1 LR3 influences the immune system by regulating cell cycle progression, apoptosis, and protein translation through IGF-1 receptor (IGF-IR) signaling. Studies show this pathway modulates the quality and amplitude of immune responses and may protect against autoimmune conditions like insulin-deficient diabetes. However, IGF-IR overexpression is linked to autoimmune diseases like Graves’ disease. IGF-1 LR3’s role in immune regulation highlights its potential as a therapeutic target for managing immune-related and autoimmune disorders (11).
Cardioprotective Properties: Studies have shown that IGF-1 LR3 supports cardiovascular health by promoting cardiac development, improving heart function, and enhancing metabolic processes. IGF-1 increases cardiac output, stroke volume, contractility, and ejection fraction, aiding recovery after myocardial infarction.
It also improves lipid profiles, lowers insulin levels, and enhances glucose metabolism and insulin sensitivity. Low IGF-1 levels are linked to higher cardiovascular risk, highlighting its therapeutic potential in managing cardiovascular diseases and improving overall heart health (12).
Buy IGF-1 LR3 Pre-Mixed Peptide Pen from Peptide Works. Each 1 mg cartridge can be purchased individually or as part of a complete kit that includes a reusable pen, needle tips, and a carry case for convenient and accurate preparation.