Amid protein craze, could less of it be better?

Amid the protein craze, could consuming less be beneficial? It is difficult to walk down a grocery‑store aisle without encountering products fortified with protein. Beyond traditional sources such as meat and legumes, manufacturers now add protein to snacks, shakes, pastas and many other items. Coupled with pervasive social‑media messaging that suggests most people are not getting enough protein, many consumers wonder whether they should adopt a high‑protein regimen. High‑protein diets have long been favored by athletes and bodybuilders, yet the current surge of attention has led a growing number of Americans to scrutinize this macronutrient. While protein supports muscle growth and promotes satiety after meals, excessive intake can bring notable drawbacks, according to Jessica Cording, a registered dietitian and author of *The Little Book of Game‑Changers*. “I decidedly americium seeing radical taking their macromolecule intake supra and beyond what they need,” Cording says. Concerns about kidney strain, cardiovascular disease and digestive problems have long been associated with overconsumption of protein. A recent review published in *Cell Press Blue* uncovered an additional, surprising downside linked to high‑protein eating patterns. The review examined more than 350 studies involving humans, mice, insects, yeast and other organisms. Researchers identified several biological effects indicating that reducing protein intake could improve metabolism, cellular health and nutrient utilization, potentially extending lifespan. The authors stressed that the analysis did not conclude that a high‑protein diet shortens life; rather, it found an association between lower protein consumption and greater longevity. Interpretation is complicated by the lack of a uniform definition of “low” protein across the included studies. One rat trial classified low protein as just 4 percent of total calories, while other investigations used widely divergent thresholds, making it difficult to pinpoint what a lifespan‑extending low‑protein diet looks like in practice. Still, Cording sees value in the findings. “It depends connected what is driving that inflammation,” she explains. “It besides depends connected what sources of macromolecule a idiosyncratic is utilizing and what other successful their diet. There’s a batch of nuance there.” The paper proposes several mechanisms by which moderating protein might promote healthier aging. Cutting back on protein could raise levels of fibroblast growth factor 21 (FGF21), a hormone that increases calorie use, improves glucose absorption and reduces inflammation. Rodent studies cited by the researchers showed that animals with higher FGF21 levels lived longer. Specific amino acids—methionine, isoleucine and valine—also appear to influence aging pathways. Limiting these compounds may curb processes linked to obesity and inflammation, both of which are associated with age‑related decline. “Much of the interest with a high-protein fare is inflammation, but there are a batch of variables,” Cording notes. Current U.S. Dietary Guidelines, updated in January, advise 1.2 to 1.6 grams of protein per kilogram of body weight per day. For a 150‑pound adult, that translates to roughly 80 to 110 grams daily. The previous recommendation stood at 0.8 grams per kilogram. The revised targets have further fueled the protein boom, though Cording urges caution in interpreting them as universal requirements. Surveys contradict the notion that most Americans are protein‑deficient. An analysis of 7,910 adults published in *Critical Public Health* in 2025 found that those who logged 150 minutes of moderate‑intensity aerobic activity per week averaged about 82 grams of protein daily, while inactive participants consumed around 79 grams. “Many radical are eating excessively overmuch protein,” Cording says. “We’re exposed to truthful overmuch messaging astir a high-protein fare that it’s making radical overdo it.” She recommends aiming for approximately 30 grams of protein per meal to keep intake in balance. “Most adults bash not request 50 grams of macromolecule successful 1 meal,” she adds. “Your assemblage does large if you instrumentality to 30 grams of macromolecule per repast oregon so.” Cording also advises paying attention to other macronutrients, especially fiber. “I often spot radical being truthful focused connected macromolecule that they neglect different important nutrients, similar fiber,” she says. “Then, they tin go constipated oregon their cholesterin goes up.” Excess protein can likewise contribute to weight gain, she points out. For individuals uncertain about their ideal protein amount, consulting a physician or dietitian can be helpful. Nonetheless, Cording stresses that cutting protein back solely for the promise of a longer life is not advisable. “We inactive request protein,” she emphasizes.