Evidence supporting the use of: Daidzein
For the body system: Skeletal System (Bones)

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Synopsis

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

Daidzein is an isoflavone found primarily in soy products and has been studied for its potential effects on bone health, particularly in postmenopausal women. Scientific interest in daidzein's skeletal benefits stems from its phytoestrogenic properties; it can bind to estrogen receptors and mimic some effects of endogenous estrogen, which is important for maintaining bone density. Several in vitro and animal studies have demonstrated that daidzein may promote osteoblast (bone-forming cell) activity and inhibit osteoclast (bone-resorbing cell) activity, suggesting a protective effect against bone loss.

Human clinical studies provide moderate support for these findings. Some randomized controlled trials have shown that supplementation with daidzein, especially in combination with other soy isoflavones, can reduce bone loss and improve bone mineral density (BMD) in postmenopausal women. However, results are not entirely consistent, and the magnitude of benefit is generally modest. The mechanism is thought to involve estrogen receptor-mediated pathways and modulation of bone remodeling.

While daidzein is not universally recommended as a primary therapy for osteoporosis or bone health, there is a reasonable scientific basis for its supportive use, particularly in populations at risk for estrogen deficiency-related bone loss. More large-scale and long-term studies are needed to confirm its efficacy and define optimal dosing. Overall, the evidence for daidzein's role in supporting the skeletal system is moderate and not solely based on tradition.

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Products containing daidzein

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