A JAMA study finds no benefit of higher protein intake on fat loss.
One thing is sure: intake of dietary calories will influence weight gain. But the notion that protein can affect body fat has hit a snag, thanks to a new study published in JAMA, the Journal of the American Medical Association.
In a randomized controlled trial funded by Louisiana State University and the USDA, 25 healthy and weight-stable adults, ages 18 to 35, were assigned to overfeed on diets containing 5%, 15%, or 25% of energy from protein. Over eight weeks, researchers measured body composition and energy expenditure in each subject.
The aim of the study was to determine whether changes in protein intake would affect body fat in patients in a controlled setting.
Compared to subjects consuming low protein (5%), subjects consuming higher amounts of protein saw increased body protein levels and resting energy expenditures-as expected. But body fat increased similarly across all three groups. The logical assumption is that those gains came from calorie increase, not protein increase, according to laed researcher George Bray, PhD, of the Pennington Biomedical Research Center in Baton Rouge:
“Among persons living in a controlled setting, calories alone account for the increase in fat; protein affected energy expenditure and storage of lean body mass, but not body fat storage.”
Judge denies CRN’s motion for preliminary injunction but its lawsuit against NY state will proceed
April 23rd 2024The judge in CRN's lawsuit against NY state's law banning the sale of weight management and muscle building supplements to minors has denied its motion for a preliminary injunction, but determined that CRN has standing to sue on behalf of its members.
CRN NY State lawsuit update: Dispatch from SupplySide East 2024
April 18th 2024CRN's Steve Mister updates Nutritional Outlook about its ongoing litigation against NY State. The organization sued the state to prevent the enforcement of law that bans sale of weight management supplements to minors.
Microalgae extract supports metabolic health and bone mass during diet and exercise routine
April 11th 2024The extract from Microphyt, called PhaeOptim, was shown to complement weight management strategies that include diet and exercise by support bone mass, aerobic capacity, resting heart rate, and blood lipid profiles.