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High-Protein, Low-Glycemic Index Diets and Weight Loss

What You Should Be Eating If You Want to Lose Weight


As we age and our metabolisms slow, it's easy to pack on a few pounds without realizing it. But a study has found that making consistent changes to your eating habits can lead to big weight-loss results over time.

The 2015 study, first published in the American Journal of Clinical Nutrition, followed the dietary habits of over 120,000 people for 16 years and found that those who ate foods that had a high glycemic load (which includes refined grains, starches, and sugars) gained more weight than those who ate foods with a low glycemic load (foods such as nuts, dairy, and certain fruits and vegetables). This isn't surprising or new; other research has shown that going lower on the glycemic index (GI) scale will help you lose weight. What is interesting in the new study, however, is that other key habits can mean the difference between pounds on the scale. Check out what else the researchers found about weight gain and loss:

  • Those who ate more yogurt, seafood, skinless chicken, and nuts lost the most weight; in fact, the more people ate of these foods, the less weight they gained.
  • The researchers found, however, no difference in weight gain in those who ate low-fat vs full-fat dairy.
  • Diets with more red and processed meat intake were associated with weight gain, especially when meat was paired with refined grains or starches.
  • Eating meat paired with low-GI foods, however (like vegetables), helped reduce weight gain.
  • Eating foods like eggs and cheese along with high-GI foods was linked to weight gain, while eating these foods with low-GI foods led to weight loss.

In general, the researchers found that the best diets for weight loss were high in protein-rich foods like fish, nuts, and yogurt, which helped prevent weight gain. Avoiding refined grains, starches, and sugars further helped, as did replacing red meat consumption with other protein-rich foods like eggs and cheese. It may seem like common sense, but taking the time to fill your plate with lean proteins and vegetables and other low-GI foods will help you lose or maintain weight throughout the years. Learn more about the glycemic load and how foods rank on the glycemic index here.

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Image Source: POPSUGAR Photography / Nicole Perry
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