During fasting, human growth hormone (HGH) levels increase in the body.
Notes on verification
Confirmed by multiple independent peer-reviewed studies spanning decades, including a classic 1988 JCI study and a 2025 Frontiers in Endocrinology study, with consistent mechanistic explanation involving insulin, glucose, and ghrelin.
Sources
- Intermittent Fasting: How To, Types, Benefits, and Safety (healthline.com)
- https://www.jci.org/articles/view/113450 (jci.org)
- https://pmc.ncbi.nlm.nih.gov/articles/PMC11842881/ (pmc.ncbi.nlm.nih.gov)
- https://www.news-medical.net/news/20250225/Water-only-fasting-boosts-human-growth-hormone-without-weight-loss.aspx (news-medical.net)
- https://academic.oup.com/jcem/article/94/3/965/2596752 (academic.oup.com)
- https://www.sciencedirect.com/science/article/abs/pii/S1096637405000201 (sciencedirect.com)