Cholesterol Levels Falling Among U.S. Adults, CDC Says

Rate of high total cholesterol falls from 18.3% to 12.4%

The prevalence of high cholesterol among U.S. adults fell significantly between 1999–2000 and 2015–2016, according to data released by the Centers for Disease Control and Prevention’s National Center for Health Statistics.  

According to a Reuters report, the latest survey found that 12.4% of adults 20 years of age and older had high total cholesterol compared with 18.3% in 1999–2000. High total cholesterol was defined as levels above 240 mg/dL in the blood.

High cholesterol is a key risk factor for heart disease, which remains the number-one killer in the United States despite dramatic declines in recent decades.

To improve the health of the U.S. population, a program called Healthy People 2020 included a goal of reducing the proportion of adults with high total cholesterol to less than 13.5%. Both men and women ages 20 and over met that goal, Reuters noted.

The surveys over two-year periods provide a snapshot of health of the U.S. population. “It’s good news that total cholesterol is going down,” said Margaret Carroll, lead author of the latest report. Each survey targets a sample of about 5,000 people from counties across the country.

While the report does not explain the positive trend, one answer seemed obvious to Dr. Steven Nissen, chief of cardiology at Cleveland Clinic, who was not involved with the CDC report. “The use of statins has skyrocketed,” Nissen told Reuters, referring to widely used cholesterol-lowering medicines that also significantly reduce heart attacks. “My guess is the vast majority of this difference is due to the use of statins.”

Public health measures such as bans on trans-fat foods, as well as individual decisions to alter diet and exercise, have also likely helped, Nissen said.

The CDC report also found the prevalence of Americans with levels of “good” HDL considered too low fell from 22.2% in 1999–2000 to 18.4% as of last year. Levels of HDL are recommended to be at 40 mg/dL or above. However, raising HDL via medicines, such as niacin, has never shown a correlation with better health outcomes.

The NCHS plans to release data on levels of “bad” LDL cholesterol, the prime target of statins, and triglycerides—both components of total cholesterol—later, Reuters reported.

In 2015–2016, men ages 40–59 had significantly higher rates of high total cholesterol (16.5%) than those ages 20–39 (9.1%) or those 60 and older (6.9%). Among women, the 20–39 age range had far lower rates at 6.7%, while more than 17% had high total cholesterol in the other two age groups.

Race appeared to make no significant difference in high cholesterol rates among men, but Hispanic women had lower rates than non-Hispanic white women —9% versus 14.8% —with non-Hispanic blacks and Asians in the middle at 10.3% each.

Source: Reuters; October 26, 2017.

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