Many “sex experts” of the 19th century believed that frequent sexual intercourse was unhealthy.
“Even in animals this is sometimes the case. Young bulls and stallions have fallen into a faint after first congress; boars may be seriously affected in a similar way; mares have been known even to fall dead.
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In the human species, not only death itself, but innumerable disorders and accident have been known to follow immediately after coitus, these results being mainly due to the vascular and muscular excitement involved in the process of detumescence. Fainting, vomiting, urination, defecation have been noted as occurring in young men after the first coitus.
Epilepsy has been not infrequently recorded. Lesions of various organs, even rupture of the spleen, have sometimes taken place. In men of mature age, the arteries have at times been unable to resist the high blood-pressure and cerebral hemorrhage with paralysis has occurred. In elderly men the excitement of intercourse with strange women has sometimes caused death, and various cases are known of eminent persons who have thus died in the arms of young wives or prostitutes.”
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Robinson refers to the case of a judge who died shortly after connection with a girl in a brothel, and to the case of a man of seventy who died after intercourse with a prostitute. He also mentions the case of a man of 48 years of age who was found dying in a Chicago hotel after cohabiting with an accommodating widow.
Also the case of a young man who fainted away at the first coitus, and that of a man sixty years old who had connection with a strange woman and fell dead as he walked to the door immediately after the act.
and of course there’s always first hand proof to be found at the Gimcrack