New research suggests sexual liberation was a result of widespread use of penicillin, rather than the introduction of birth control pills.
Emory University researchers used an economic model to determine that the rise in risky, non-traditional sexual relations — that marked the swinging ‘60s — actually began as much as a decade earlier, during the conformist ‘50s.
“It’s a common assumption that the sexual revolution began with the permissive attitudes of the 1960s and the development of contraceptives like the birth control pill,” notes Emory University economist Dr. Andrew Francis, who conducted the analysis.
“The evidence, however, strongly indicates that the widespread use of penicillin, leading to a rapid decline in syphilis during the 1950s, is what launched the modern sexual era.” Francis’ analysis was recently published in the journal Archives of Sexual Behavior.
As penicillin drove down the cost of having risky sex, the population started having more of it, Francis says, comparing the phenomena to the economic law of demand: When the cost of a good falls, people buy more of the good.
“People don’t generally think of sexual behavior in economic terms,” he said, “but it’s important to do so because sexual behavior, just like other behaviors, responds to incentives.”
Syphilis reached its peak in the United States in 1939, when it killed 20,000 people. “It was the AIDS of the late 1930s and early 1940s,” Francis said. “Fear of catching syphilis and dying of it loomed large.”
Although penicillin was discovered in 1928, it was not put into widespread clinical use until 1941. As World War II escalated, and sexually transmitted diseases threatened the troops overseas, penicillin was found to be an effective treatment against syphilis.
“The military wanted to rid the troops of STDs and all kinds of infections, so that they could keep fighting,” Francis says. “That really sped up the development of penicillin as an antibiotic.”
Right after the war, penicillin became a clinical staple for the general population as well. In the United States, syphilis went from a chronic, debilitating and potentially fatal disease to one that could be cured with a single dose of medicine.
From 1947 to 1957, the syphilis death rate fell by 75 percent and the syphilis incidence rate fell by 95 percent. “That’s a huge drop in syphilis. It’s essentially a collapse,” Francis says.
Francis tested his theory that risky sex increased as the cost of syphilis dropped by analyzing data from the 1930s through the 1970s from state and federal health agencies.
Some of the data was only available on paper documents, but the Centers for Disease Control and Prevention (CDC) digitized it at the request of Francis.
For his study, Francis chose three measures of sexual behavior: The illegitimate birth ratio; the teen birth share; and the incidence of gonorrhea, a highly contagious sexually transmitted disease that tends to spread quickly.
“As soon as syphilis bottoms out, in the mid- to late-1950s, you start to see dramatic increases in all three measures of risky sexual behavior,” Francis said.
Fisher said although the 1950s are associated with conservative or prudish, more traditional sexual behaviors, young adults were increasingly liberated as their fear of syphilis abated.
According to experts, a few physicians sounded moralistic warnings during the 1950s about the potential for penicillin to affect behavior.
Spanish physician Dr. Eduardo Martinez Alonso referenced Romans 6:23, and the notion that God uses diseases to punish people, when he wrote: “The wages of sin are now negligible. One can almost sin with impunity, since the sting of sinning has been removed.”
Such moralistic approaches, equating disease with sin, are counterproductive, Francis said, stressing that interventions need to focus on how individuals may respond to the cost of disease. He found that the historical data of the syphilis epidemic parallels the contemporary AIDS epidemic.
“Some studies have indicated that the development of highly active anti-retroviral therapy for treating HIV may have caused some men who have sex with men to be less concerned about contracting and transmitting HIV, and more likely to engage in risky sexual behaviors,” Francis says.
“Policymakers need to take into consideration behavioral responses to changes in the cost of disease, and implement strategies that are holistic and longsighted,” he concluded. “To focus exclusively on the defeat of one disease can set the stage for the onset of another if preemptive measures are not taken.”
Source: Emory University