IGF-1, a key biomarker for longevity, plays a crucial role in the regulation of cellular growth and proliferation. As a potent stimulator of cell growth, IGF-1 levels have a significant impact on the aging process. Elevated levels of IGF-1 have been associated with increased risk of age-related diseases, while lower levels have been linked to extended lifespan and improved healthspan. Monitoring and regulating IGF-1 levels through lifestyle interventions, such as diet and exercise, have shown promise in promoting longevity and healthy aging. Additionally, IGF-1 levels can serve as a valuable biomarker to assess the effectiveness of anti-aging interventions and to guide personalized longevity strategies.