A new review of more than 350 studies suggests that lowering protein intake may help support a longer, healthier life. The research points to protein restriction as a possible alternative to strict calorie cutting, especially for sedentary adults who may find traditional dieting harder to maintain.

According to the review, eating less protein appears to trigger a hormone called FGF21. Researchers link that response to some of the same longevity-related benefits often associated with calorie restriction, a strategy that has been studied for years in aging research.

The findings add to a growing discussion about how diet composition, not just total calories, may influence health over time. Instead of focusing only on eating less overall, the review suggests that reducing protein could affect important biological pathways tied to metabolism and aging.

Even so, the report is a review of existing research rather than a new clinical trial proving cause and effect in every group. The takeaway is that protein intake may play a bigger role in healthy aging than many people realize, and that a lower-protein approach could be worth closer study as a practical longevity strategy.