Contraception in overweight women

Clinicians question whether weight can have an impact on the efficacy of some contraceptives

Rates of overweight and obesity continue to rise in Australia. According to the Australian Institute of Health and Welfare, three in five Australians are overweight (BMI 25-29.9kg/m2) or obese (BMI >30kg/m2), which represents a 5% increase on the 1995 figures.1

In the US, where the trend has been apparent for longer, clinicians have questioned whether weight could have a potential impact on the efficacy of various contraceptive methods.

High contraceptive efficacy is particularly important in those who are