Six decades of PCOS care: how diagnosis and treatment evolved
PCOS was first described in 1935 by Irving Stein and Michael Leventhal, who linked polycystic ovaries with absent periods, hair growth and obesity. The way it is diagnosed and treated has changed enormously since. Here is the journey over six decades.
1960s-1970s: the surgery and clomiphene era
PCOS was seen mainly as an ovarian problem. Surgical wedge resection of the ovary was the standard treatment for infertility, and clomiphene citrate became available as the first oral ovulation-induction drug in the 1960s.
1980s: ultrasound and insulin resistance
Pelvic ultrasound made it possible to see polycystic ovaries. Researchers also recognized insulin resistance and high insulin as a central feature of PCOS, linking it to diabetes and heart risk and changing how doctors thought about the condition. Laparoscopic ovarian drilling replaced open surgery.
1990s: the first criteria and the metformin era
The NIH published the first formal diagnostic criteria in 1990. Metformin and other insulin sensitizers began to be studied and used for cycle regularity and ovulation. Doctors started to recognize PCOS as a metabolic as well as a reproductive condition.
2000s: the Rotterdam criteria
In 2003 the Rotterdam consensus introduced the 2-of-3 rule that is still used today, and the AE-PCOS Society proposed its own criteria in 2006. This opened the way to the four phenotypes and to recognizing lean, ovulatory and normoandrogenic forms of PCOS.
2010s: letrozole and the first international guideline
The PPCOS II trial in 2014 showed that letrozole gave higher live birth rates than clomiphene, and letrozole became first-line for ovulation induction. The first international evidence-based guideline followed in 2018, bringing doctors worldwide onto common standards for diagnosis, fertility, metabolic and mental health care.
2020s: integrated, long-term care
The 2023 International PCOS Guideline update confirmed that PCOS needs whole-person, long-term care: phenotype classification, insulin resistance work-up, tailored pills or anti-androgens, inositol and other supplements with evidence, GLP-1 drugs for selected patients, nutrition and mental health support, and regular screening for diabetes, heart and endometrial risk. Online care now brings gynecologists, endocrinologists, fertility specialists, dietitians and psychologists into one coordinated plan.
