Coronary heart disease (CHD) is the leading cause of death in the world.1 Towfighi and colleagues evaluate sex-specific trends in the prevalence of myocardial infarction (MI) and its associated risk factors using serial cross sectional data from the US National Health and Nutrition Examination Surveys from two separate periods (1988–1994 and 1999–2004). They conclude that the sex gap in MI prevalence narrowed during recent years as a result of a decreasing rate among men and increasing rate among women. During the same period, the modifiable cardiovascular risk improved in men (smoking rates declined; systolic blood pressure and high-density lipoprotein levels improved) more than it did …