Lecture 7: Reproductive and Developmental Toxicology (Yager)
Lecture 7: Reproductive and Developmental Toxicology (Yager)
Lecture 7: Reproductive and Developmental Toxicology (Yager)
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Environmental Estrogens<br />
Adverse<br />
reproductive<br />
effects<br />
150<br />
Sperm count<br />
(x10 6 /ml)<br />
100<br />
50<br />
0<br />
1930 1950 1970 1990<br />
61 studies over 52 years suggest declining sperm counts. Circle size reflects<br />
relative number of subjects.<br />
Source: adapted by CTLT from British Medical Journal, 1992.<br />
57
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