The Claim

Among obese adults who lose at least 2.25 kg during a 12-week calorie-restricted diet, daily consumption of 20 grams of Prolibra™ whey protein before meals results in a loss of 3.63 kg of fat and 1.07 kg of lean mass, yielding a fat-to-lean loss ratio of 3.39:1, whereas control participants without this intervention lose 2.11 kg of fat and 2.41 kg of lean mass, yielding a fat-to-lean loss ratio of 0.88:1.

Source: A whey-protein supplement increases fat loss and spares lean muscle in obese subjects: a randomized human clinical study

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
71score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Quantitative
1 study reviewed
In plain English

In obese adults following a 12-week calorie-restricted diet and losing at least 2.25 kg, those who consume 20 grams of Prolibra™ whey protein before meals lose more fat and less muscle compared to those who do not take the supplement.

See the scientific wording

Among obese adults who lose at least 2.25 kg during a 12-week calorie-restricted diet, those consuming 20 grams of Prolibra™ whey protein daily before meals lose 3.63 kg of fat and 1.07 kg of lean mass, resulting in a 3.39:1 fat-to-lean loss ratio, compared to 2.11 kg fat and 2.41 kg lean mass lost in controls, yielding a 0.88:1 ratio.

Why this might work

When whey protein is consumed before meals, it releases a high amount of leucine into the blood, which tells muscle cells to build more protein and stop breaking down. At the same time, it lowers insulin and cortisol levels, which reduces fat storage and increases fat burning. The calcium in the whey also helps fat cells release stored fat and reduces how much fat the body absorbs from food.

Supported mechanismbased on 1 study

What the research says

1 study

  1. Study: A whey-protein supplement increases fat loss and spares lean muscle in obese subjects: a randomized human clinical study

    People who took this special whey protein drink before meals lost more fat and kept more muscle than those who took a plain drink, even though both groups ate the same low-calorie diet. So yes, the protein drink helped them lose weight in a healthier way.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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