AUTHOR=Xin Xianyang , Wang Hai , Guo Yongqing , Xie Jun TITLE=Effect of long-term exercise on circulating ghrelin in overweight and obese individuals: a systematic review and meta-analysis JOURNAL=Frontiers in Nutrition VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2025.1518143 DOI=10.3389/fnut.2025.1518143 ISSN=2296-861X