The History of the Birth Control Pill, Part 6: Los Campesinos

Welcome to the final installment of our series chronicling the history of the birth control pill. In earlier installments, we learned how chemists were able to extract a chemical from a wild yam called barbasco and convert it into progesterone, the active ingredient in the Pill.

In 1960, the FDA approved oral contraceptives for marketing. At this time, more than 2 million Americans were already using the Pill — and more than 100,000 Mexican campesinos (a Spanish word for peasants) were harvesting barbasco, the wild yam necessary for its production. By 1974, 125,000 Mexicans were collecting and selling barbasco. Every week, during the barbasco trade’s peak, an excess of 10 tons of the plant were removed from tropical Mexico.


Until the barbasco supply started to dwindle in the 1970s, Mexico enjoyed prominence as the world’s supplier of progesterone.


Though they were paid subsistence-level wages for their labors (half a peso per kilo of dried root), and the work itself was dangerous and backbreaking, they were putting Mexico on the map in the scientific community. After establishing a hormone synthesis industry in Mexico, the European stranglehold on hormones was loosened and the price of progesterone plummeted from $80 per gram to less than a dollar per gram. By 1954, Syntex, a Mexican laboratory, was the largest producer of steroids in the world, having usurped Europe’s monopoly.

Scientists depended on the campesinos’ knowledge of soil conditions and growth cycles, as well as their ability to differentiate between different species of yams. The campesinos relied on their knowledge of weather patterns, differences in root coloration, and size variations to determine when they could dig up roots with the highest concentrations of sapogenin, the chemical that was converted into progesterone in the laboratory. Over the decades, the campesinos slowly gained an education in organic chemistry. Continue reading

Get Smart About Antibiotics!

This week we celebrate Get Smart About Antibiotics Week. Antibiotics, or antimicrobials as they are also called, cure bacterial infections by killing bacteria or reducing their ability to reproduce so your own body’s immune system can overcome an infection. Penicillin was the first antibiotic, and was discovered in 1924 by Alexander Fleming. Since its widespread use, beginning in the 1940s, countless lives have been saved from devastating bacterial infections. Talk about a wonder drug!


Improper use of antibiotics can have dangerous consequences.


Since then, different types of antibiotics have been developed to combat many different types of infectious bacteria. Classes of antibiotics include penicillins, cephalosporins, macrolides, fluoroquinolones, aminoglycosides, and others. In each of these classes there are lots of different individual medications. (For example, cephalosporins include the drugs cephalexin, ceftriaxone, cefaclor, and others.) Some antibiotics are broad spectrum, which means they work on many different bacteria. Some are more narrow spectrum, used for specific bacteria.

Antibiotics only work for bacterial infections … not viral infections. They are ineffective at killing viruses. Viral infections include colds, flu, runny noses, most coughs and bronchitis, and sore throats unless they are caused by strep. Sexually transmitted viruses include human papillomavirus (HPV), herpes simplex virus, and HIV. Continue reading