Effects of Soy Foods on Ovarian Function in Premenopausal Women
Author Information
Author(s): Wu A H, Stanczyk F Z, Hendrich S, Murphy P A, Zhang C, Wan P, Pike M C
Primary Institution: University of Southern California, School of Medicine
Hypothesis
The high intake of soy foods among Asians may partly explain their lower rates of breast cancer by lowering endogenous oestrogen levels.
Conclusion
Soy intervention was associated with a significant reduction in serum luteal oestradiol levels among Asian participants.
Supporting Evidence
- Soy intervention reduced serum luteal oestradiol levels by 9.3%.
- The reduction in luteal phase oestradiol was 17.4% among Asian participants.
- Urinary excretion of isoflavones was higher among Asians than non-Asians.
Takeaway
Eating soy foods might help lower certain hormone levels in Asian women, but it didn't have the same effect on non-Asian women.
Methodology
Twenty healthy cycling premenopausal women participated in a 7-month soy intervention study, comparing hormone levels before, during, and after the intervention.
Potential Biases
Potential bias due to the small number of participants and lack of diversity in the sample.
Limitations
The study had a small sample size and focused only on specific racial groups.
Participant Demographics
Ten Asian and ten non-Asian premenopausal women.
Statistical Information
P-Value
P< 0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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