Claim: IGF-1 LR3 is a peptide that can contribute to muscle mass in higher doses but is not a substitute for exercise.
Verdict: Correct (85% confidence)
Explanation: According to a Tier 1 source from the NIH, IGF-I is recognized for enhancing muscle growth and repair, which supports the claim that IGF-1 LR3 can contribute to muscle mass (source 2). Additionally, multiple Tier 9 sources, such as American Wellness Pharmacy and Tucson Wellness MD, describe IGF-1 LR3's role in muscle growth and recovery, further supporting this aspect of the claim (sources 3, 5). However, a source from HubMedEd clarifies that IGF-1 LR3 can aid in muscle regeneration but does not...