Protein is one type of macronutrient. The other two are fats and carbohydrates.
People will debate about the benefits of cutting out carbs and fats until the end of time, but the importance of protein for weight loss (or fat loss) is widely recognized.
Here are 3 reasons why protein is so important for weight loss:
#1: Protein makes you eat less automatically
A higher protein intake increases levels of the satiety (appetite-reducing) hormones GLP-1, peptide YY, and cholecystokinin, while reducing your levels of the hunger hormone ghrelin.
This leads to a major reduction in hunger and is the main reason protein helps you lose weight. It can make you eat fewer calories automatically.
Numerous studies have shown that when people increase their protein intake, they start eating fewer calories.
In one study, when people increased their protein intake to 30% of their daily calories they automatically dropped their total calorie intake by 441 calories per day, which is a huge amount. For most people, that’s the deficit required to lose weight safely and sustainably.
Protein also has a powerful effect on both cravings and the desire to snack at night.
The graph below is from a study comparing a high-protein diet and a normal-protein diet in overweight men.
The high-protein group is the green bar, while the normal-protein group is the blue bar.
In this study, protein at 25% of calories reduced cravings by 60% and cut the desire for late-night snacking by half.
#2: Digesting and metabolizing protein burns calories
After you eat, some calories are used for the purpose of digesting and metabolizing the food.
Unlike other ‘diets’, which typically only work in the short-term, a higher protein intake can also help prevent weight regain. In one study, a modest increase in protein intake reduced weight regain after weight loss by 50%.
If your goal is to lose weight and keep it off, then consuming an adequate amount of protein from quality sources should be your top priority.
All information on this website is intended for instruction and informational purposes only. The authors are not responsible for any harm or injury that may result. Significant injury risk is possible if you do not follow due diligence and seek suitable professional advice about your injury. No guarantees of specific results are expressly made or implied on this website.