Table 1 Distribution of dietary intake of phytoestrogens (μg/day) among 6,584 mothers of control infants in the National Birth Defects Prevention Study.*
Phytoestrogen | Mean ± SD | Median (Interquartile range) |
|---|---|---|
Total Isoflavones | 58.5 ± 35.0 | 49.1 (35.2, 72.2) |
   Genistein | 23.7 ± 13.7 | 20.3 (14.4, 29.5) |
   Biochanin A | 15.2 ± 9.1 | 13.1 (9.1, 18.8) |
   Daidzein | 12.9 ± 8.9 | 10.4 (7.0, 16.0) |
   Glycetin | 9.7 ± 7.5 | 7.5 (5.1, 11.8) |
   Formononetin | 5.7 ± 3.2 | 5.0 (3.5, 7.1) |
Total Lignans | 139.0 ± 98.2 | 114.2 (75.6, 173.4) |
   Secoisolariciresinol | 117.3 ± 87.2 | 94.8 (61.1, 146.9) |
   Matairesinol | 22.4 ± 16.9 | 18.0 (12.4, 27.0) |
Coumestrol | 10.0 ± 6.6 | 8.5 (5.4, 12.7) |
Total Phytoestrogens | 208.9 ± 133.6 | 174.8 (121.2, 256.5) |