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Soy Protein Vs. Whey Protein to Lose Weight

Research and Clinical studies published on PubMed Central confirm that protein in both whey and soy may contribute to weight loss and reduction of body fat. Depending on your dietary and health needs you may use either one for weight loss.

  1. Types

    • Pure soy protein comes from soybeans and is a vegetable protein. Whey protein is a by-product of the cheese making process and is animal protein.

    Quality

    • The accepted measure of protein quality is the protein digestibility corrected amino acid score (PDCAAS). Both whey and soy are rated a 1.0 and provide the amounts of amino acids required by your body.

    Significance of Whey

    • A study published in the Nutrition and Metabolism Journal concluded that subjects taking a whey supplement lost fat and showed a greater preservation of lean muscle.

    Significance of Soy Protein

    • According to studies conducted by the International Journal of Medical Sciences soy protein in your diet reduces body weight and body fat mass. It also reduces plasma lipids.

    Theories/Speculation

    • Science Daily indicates studies conducted by University College London show that eating a higher amount of protein in your diet may help reduce hunger and aid weight loss.

    Considerations

    • Whey protein is generally used for muscle building and weight loss. Soy Protein is used for weight loss, healthy heart and by vegetarians. They are both nutrionally sound.

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