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Protein restriction study challenges US dietary guidelines, cites health benefits
A review of more than 350 studies published in the Cell Press journal Cell Press Blue concludes that lowering protein intake can improve metabolic health, reduce body fat and fasting blood glucose, and in some cases extend lifespan. The analysis, led by Dudley Lamming of the University of Wisconsin‑Madison, finds that excess protein—especially in sedentary populations—may accelerate age‑related decline, while protein restriction triggers anti‑aging mechanisms such as increased fibroblast growth factor 21. The authors note that active individuals still benefit from higher protein for muscle maintenance. The review arrives as US authorities have recently raised recommended daily protein intake, nearly doubling previous guidelines. Italian media outlets have reported the findings, warning against the growing “protein mania” in fortified foods ranging from yogurt to coffee and water.
Entities
American dietary guidelines · Cell Press Blue · Dudley Lamming · University of Wisconsin-Madison · University of Wisconsin‑Madison · protein restriction
Claims
What the coverage asserts, and how many sources carry each claim.
- [● 3 SOURCES] Recent U.S. dietary guidelines have roughly doubled the recommended daily protein intake. quindicinews.it · www.periodicodaily.com · www.senzalinea.it
- [● 3 SOURCES] Reducing protein intake may have health benefits and, in some cases, extend lifespan. quindicinews.it · www.periodicodaily.com · www.senzalinea.it
- [● 3 SOURCES] In flies and rodents, reduced protein intake extends lifespan without reducing caloric intake. quindicinews.it · www.periodicodaily.com · www.senzalinea.it
- [● 3 SOURCES] Most people are relatively sedentary and likely consume more protein than needed, which may have negative health effects. quindicinews.it · www.periodicodaily.com · www.senzalinea.it
- [● 3 SOURCES] The review examined more than 350 studies on protein restriction and aging. quindicinews.it · www.periodicodaily.com · www.senzalinea.it
- [● 3 SOURCES] Calorie restriction is known to extend lifespan and reduce age‑related disease risk in many organisms. quindicinews.it · www.periodicodaily.com · www.senzalinea.it
- [● 3 SOURCES] Protein is essential for muscle growth and exercise response in active individuals. quindicinews.it · www.periodicodaily.com · www.senzalinea.it
- [● 3 SOURCES] Human studies show lower protein diets can reduce weight, fat mass and improve fasting glucose, though some participants may consume more total calories. quindicinews.it · www.periodicodaily.com · www.senzalinea.it