Evidence supporting the use of: Soybean
For the health condition: Aging (prevention)

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Soybean has been studied for its potential role in aging prevention and support due to its rich content of isoflavones (such as genistein and daidzein), protein, and other phytonutrients. Scientific evidence suggests that soybean isoflavones have antioxidant properties, which can help reduce oxidative stress—a key contributor to aging and age-related diseases. Several clinical studies indicate that regular consumption of soy products may improve skin elasticity, reduce the appearance of wrinkles, and support bone health in postmenopausal women, likely due to their estrogen-like effects. For example, a 2007 randomized controlled trial published in European Journal of Nutrition found that dietary soy isoflavones improved skin aging indicators in middle-aged women.

Moreover, epidemiological studies show that populations with high soy intake, such as those in East Asia, tend to have lower rates of age-related chronic diseases, including cardiovascular disease and osteoporosis. However, not all studies are consistent, and the magnitude of benefit varies. The evidence is moderate, with more robust findings for bone and cardiovascular health than for direct anti-aging effects. Overall, while traditional use in Asian diets is notable, the scientific evidence supporting soybean’s role in aging prevention is growing but not conclusive, meriting a rating of 3 for evidence strength.

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