Frequently Asked Questions

Yes. In this NHANES analysis of 16,257 adults aged 50 years and older, higher depressive symptom frequency was associated with higher prevalence of coronary heart disease, angina, myocardial infarction, and congestive heart failure. For example, CHD prevalence increased from 7.3% in participants reporting symptoms "not at all" to 10.6% with symptoms on "several days," 10.9% with symptoms on "more than half the days," and 18.2% with symptoms "nearly every day"; all trend tests across symptom-frequency categories were statistically significant (P < .001).

Adults aged 50 years and older who reported depressive symptoms had higher cardiovascular disease prevalence than those reporting no symptoms. Compared with the nondepressed group, participants with depressive symptoms had higher prevalence of CHD (10.8% vs 8.4%), angina (14.6% vs 11.7%), MI (15.4% vs 12.3%), and CHF (12.5% vs 9.1%); all of these differences were statistically significant (P < .001).

• CHD: 7.3% for "not at all," 10.6% for "several days," 10.9% for "more than half the days," and 18.2% for "nearly every day."
• Angina: 3.7%, 8.5%, 7.7%, and 13.6%, respectively.
• MI: 7.0%, 13.5%, 11.4%, and 13.6%, respectively.
• CHF: 5.1%, 12.3%, 7.1%, and 4.5%, respectively.

All trend tests across depressive symptom frequency categories were statistically significant (P < .001).

Yes. Participants with depressive symptoms and BMI 30 kg/m2 or higher had 3.2 times higher odds of CHD or angina and 3.1 times higher odds of CHF or MI compared with participants without depressive symptoms and with normal weight; both associations were statistically significant (P < .001).

Among participants with established cardiovascular disease, median BMI was also consistently higher in those with depressive symptoms: 30.8 kg/m2 for CHD, 30.5 kg/m2 for angina, 31.3 kg/m2 for CHF, and 30.7 kg/m2 for MI, compared with lower median BMI values in the corresponding nondepressed groups (all P < .001).

Yes. Current smokers with depressive symptoms had 3.6-fold higher odds of CHD or angina and 3.5-fold higher odds of CHF or MI compared with never-smokers without depressive symptoms. Both associations were statistically significant (P < .001).

Yes. Among participants with CHD, 68% of those with depressive symptoms also reported angina, compared with 57% of those without depression (P < .001). Among participants with CHF, 71% of depressed participants also reported a prior MI, compared with 62% of those without depression, and the authors noted that these overlaps were most pronounced in individuals aged 65 years and older.

Depressive symptoms were measured with a single NHANES self-report question: "Over the past two weeks, how often have you felt down, depressed, or hopeless?" Response options were "not at all," "several days," "more than half the days," "nearly every day," "don't know," and "refused."

The study treated symptom frequency as the primary exposure and also used a secondary binary grouping that classified participants as having depressive symptoms if they reported symptoms on several days or more often, versus no depressive symptoms if they answered "not at all."

This was a cross-sectional analysis of NHANES data from 2010 to March 2020 using a nationally representative sample of US adults aged 50 years and older. After exclusions, the final analytic cohort included 16,257 participants, and cardiovascular disease was defined by self-reported physician diagnoses of CHD, MI, CHF, or angina.

Because the design was cross-sectional, the study can identify associations between depressive symptom burden and cardiovascular disease, but it cannot determine whether depression caused cardiovascular disease or whether cardiovascular disease contributed to depression.

The main limitations are that the study was cross-sectional, relied on self-reported depression and cardiovascular diagnoses, and measured depression with a single-item frequency question rather than a validated scale or clinical diagnosis. The analysis also did not account for antidepressant use, duration of depressive symptoms, or comorbid psychiatric conditions, which may have confounded the observed associations.

The subgroup reporting symptoms "nearly every day" was also small (n = 22), so estimates for that category should be interpreted cautiously.

The findings suggest that depressive symptom frequency may be a useful clinical signal in cardiovascular risk assessment for adults aged 50 years and older, even when symptoms do not meet a formal diagnostic threshold. The authors conclude that integrating brief mood assessment with cardiometabolic risk evaluation may support earlier risk stratification, particularly in patients who also have obesity or current smoking.

The discussion also notes that evidence from randomized trials supports primary care collaborative care models that target depression alongside cardiometabolic conditions, although this NHANES study itself was observational and did not test an intervention.