New research weighs high-protein eating against carb-cutting for lasting weight loss

Health Points

• High-protein meals increase fullness and help preserve lean muscle during weight loss
• Lower-carb plans can reduce blood-sugar swings that trigger snacking
• Combining both approaches often yields the best results for adults over 40

Adults looking to drop pounds are often told to choose between cutting carbs or loading up on protein. Recent findings suggest the choice may not be either-or.

Researchers followed more than 1,200 middle-aged participants for eighteen months. Those who ate 25 percent of their calories from protein lost slightly more fat than the low-carb group while reporting fewer cravings.

“Protein takes longer to digest, so people naturally eat fewer calories overall,” the lead investigator noted.

At the same time, the low-carb group saw steadier morning energy and fewer energy crashes by mid-afternoon. The study authors say the difference comes from reduced spikes in blood sugar after meals.

Both eating styles produced similar overall weight change when calories were controlled. The deciding factor was consistency. Volunteers who stuck with their assigned plan for the full year kept off an average of 14 pounds.

Registered dietitian Maria Torres recommends a middle path. “Aim for a plate that is half non-starchy vegetables, one-quarter lean protein, and one-quarter slow-digesting carbs such as beans or sweet potato,” she said.

Strength training twice a week further protects muscle tissue, an important concern after age 40. Even brisk walking after dinner can blunt blood-sugar rises.

Long-term success also depends on simple routines. Pre-portioning protein-rich snacks like Greek yogurt or hard-boiled eggs reduces the chance of reaching for chips when hunger strikes.