Letter

Declining sperm count

BMJ 1996; 313 doi: 10.1136/bmj.313.7048.43 (Published 6 July 1996)
Cite this as: BMJ 1996;313:43.1

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Semen quality has declined among men born in France since 1950

  1. Jacques De Mouzon,
  2. A Spira,
  3. P Thonneau,
  4. L Multigner
  1. Epidemiologist Epidemiologist Epidemiologist Epidemiologist INSERM U 292, Hopital de Bicetre, 94276 Le Kremlin-Bicetre Cedex, France

    EDITOR,—Several recent papers have reported a possible decrease in sperm counts.1 2 3 4 5 Three of them were based on data collected in single laboratories, from a relatively low number of fertile men (between 302 and 1351).1 2 3 Their conclusions were in favour of a decline related to the year of birth1 or to the year of the measurement3 or of no change.2 The two other papers were reviews of the same published papers, the first concluding …

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