Mixed
Dietary soy protein reduces body weight and fat mass in obese humans and animals, with effects mediated by increased satiety, thermogenesis, and modulation of lipid metabolism genes.
To use soy protein for weight loss, replace a portion of your animal protein intake with soy protein isolate or soy-based meal replacements. Aim for a diet where 25-35% of your calories come from protein, ensuring you are in a caloric deficit. This approach has been shown to reduce body weight and fat mass more effectively than control diets in short-to-medium term trials, while also improving lipid profiles.
Several nutritional intervention studies in animals and humans indicate that consumption of soy protein reduces body weight and fat mass in addition to lowering plasma cholesterol and triglycerides.
Why this rating
Supported by multiple animal and human randomized controlled trials, though human data is described as 'limited' regarding long-term effects.
Source
Role of Dietary Soy Protein in Obesity
Manuel T. Velasquez et al. · International Journal of Medical Sciences · 2007
DOI 10.7150/ijms.4.72
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