A new preclinical study reports that a “longevity diet” may increase natural levels of GLP-1, a hormone involved in appetite control and blood sugar regulation, while also reducing body fat. Across reporting, the diet described is plant-forward and includes moderate fish intake. The researchers’ findings, as summarized by the outlets, focus on effects in mice, where the dietary pattern is associated with improved metabolic outcomes and lower body fat. Coverage also notes that GLP-1 has become widely discussed because of existing weight-loss drugs that target the hormone pathway. The study’s broader implication presented in the articles is that diet-based strategies could complement or support pharmacologic GLP-1 treatments, rather than replace them. Both sources frame the work as evidence that dietary choices may influence hormone balance and metabolism. The reports do not indicate immediate clinical applicability to humans, and the described benefits are tied to the experimental results in the study model referenced by the outlets.