A major scientific review is casting doubt on the popular belief that more protein is always better. Led by pathologist and biomedical researcher Dudley Lamming, the paper links lower protein intake with healthier aging in adults and adds a more cautious note to the current protein-heavy nutrition trend.

According to the report, the review looked at more than 350 studies involving humans and mice. Rather than treating high protein intake as a universal goal, the researchers appear to argue for a more nuanced view of how protein affects long-term health as people get older.

The findings arrive at a time when protein supplements, high-protein foods and fitness-focused eating plans have become increasingly common. That broader cultural shift has encouraged many people to raise their protein intake, often assuming it will automatically improve health, strength or longevity.

This review suggests the picture may be more complicated. While protein remains an essential nutrient, the research summary indicates that lower intake may be associated with healthier aging for adults, challenging one-size-fits-all advice and highlighting the need to consider protein intake in the context of overall health and age.