"The good news is that, since the Millennium, there have been reductions in blood pressure and cholesterol levels and in rates of smoking across adults in the US. However, these rates leave much room for improvement, and the average bosy mass index (BMI) has gone up, with the greatest rise for women," said Dr. Sanne Peters, Research Fellow in epidemiology at The George Institute, UK, who led the research published in Circulation.

"We also saw a welcome increase in the number of people who were managing their diabetes and high blood pressure. But, the vast majority— around two-thirds of women, and 80% of men—still don't have these conditions under control, and that's incredibly concerning."

Heart disease is the leading cause of death worldwide and accounts for about one in three deaths in the US. A significant share of heart disease can, however, be avoided by keeping blood pressure and cholesterol at healthy levels, by not smoking, and by maintaining a healthy weight.

Key findings

Obesity: BMI increased more in women than men—up from an average BMI of 28.1 to 29.6 for women, and 27.9 to 29 for men. Also, by 2016, while 11% more men than women were overweight, obesity was 5% more common in women.

Cholesterol: Women fared worse than men in the control of cholesterol (the amount of this fatty substance in the blood) with levels decreasing by 44% more in men than women over the survey period—by 13 mg/dL for men compared with only 9 mg/dL for women.

Diabetes: Rates of diabetes went up by 3% in both sexes; to 11% in women and 13% in men. Just 30% of women compared with 20% of men had their diabetes under control by 2016.

Blood pressure: The number of people with high blood pressure dropped. From 43% tp 42% for women and from 51% to 49% for men. But, only 30% of women and 22% of men had adequate control of their hypertension by 2016.

Smoking: Smoking rates dropped from 22% to 18% in women and from 29% to 22% in men.

Dr. Peters added, "By assessing sex differences across major cardiovascular risk factors, this research offers crucial insight for individuals and clinicians aiming to better manage these risks. Further sex-specific research is needed to identify the relative impact of control or elimination of each factor in order to offer the most effective treatment for, and prevention from, heart disease."

Researchers examined data between 2001 to 2016 from the US National Health and Nutrition Examination Surveys of adults aged 20 to 79 years and compared results from the earliest 4-year period (2001–2004) to the latest period (2014–2016).