González-Ogliastri et al. (2026)
frente a pacientes sin depresión) (13). Vías plausibles incluyen inflamación crónica de bajo grado,
disfunción autonómica (reducción de la variabilidad de la frecuencia cardíaca), disfunción
endotelial y conductas poco saludables (tabaquismo, sedentarismo, mala adherencia
terapéutica) asociadas a depresión. Persiste el debate sobre si la depresión es solo un marcador
de riesgo o si contribuye causalmente al desarrollo de ECV; la evidencia sugiere un rol mixto.
Análisis genéticos mediante aleatorización mendeliana (Mendelian randomization) apoyan un
efecto causal pequeño pero significativo de la predisposición a depresión sobre cardiopatía
isquémica (razón de momios, OR: odds ratio, ~1.15), sin evidenciar causalidad inversa (3). Sin
embargo, ensayos clínicos de tratamiento de la depresión en pacientes cardiovasculares no han
mostrado reducciones claras de eventos, lo que resalta la complejidad multifactorial. En conjunto,
la depresión mayor puede considerarse un factor de riesgo cardiovascular emergente, de
magnitud moderada, relevante para una evaluación y manejo integrales, aunque se requiere
investigación adicional para precisar mecanismos causales e intervenciones efectivas.
Palabras claves: Trastorno Depresivo Mayor, Enfermedades Cardiovasculares, Infarto del
Miocardio, Accidente Cerebrovascular, Mortalidad e Inflamación.
Abstract
Major depression is a common disorder worldwide, associated with substantial disability burden,
and it frequently coexists with cardiovascular disease (CVD) (1,2). Recent epidemiologic
evidence indicates that depression is linked to a modest yet consistent increase in the risk of
cardiovascular events (myocardial infarction and stroke) and cardiovascular mortality, even after
adjustment for traditional risk factors; meta-analyses have estimated a relative increase of ~20–
3
0% in incident coronary heart disease risk and up to ~40% in total cardiovascular events among
individuals with depression (3,5,9,10). Large multicountry studies support this association: for
instance, across 21 countries (PURE), depressive symptoms were associated with higher CVD
incidence (adjusted hazard ratio, HR, ≈1.14) and mortality (HR ≈1.17) over 7 years of follow-up
(
4), while two large Chinese cohorts (~539,000 adults) showed that depression was associated
with higher cardiovascular mortality (HR 1.22–1.32) and all-cause mortality (~1.3), with a more
pronounced effect in men than in women (6). In patients with established CVD, depression
predicts worse prognosis (e.g., ~60–80% higher mortality risk at 2–5 years after myocardial
infarction compared with non-depressed patients) (13). Plausible pathways include chronic low-
grade inflammation, autonomic dysfunction (reduced heart rate variability), endothelial
dysfunction, and adverse health behaviors (smoking, physical inactivity, poor medication
adherence) that commonly accompany depression. Whether depression acts merely as a risk
marker or contributes causally to CVD remains debated; current evidence suggests a mixed role.
Genetic approaches using Mendelian randomization support a small but significant causal effect
of genetic liability to depression on ischemic heart disease (odds ratio, OR, ~1.15), with no clear
evidence of reverse causality (3). Nevertheless, clinical trials treating depression in
cardiovascular populations have not demonstrated clear reductions in hard cardiovascular
endpoints, underscoring the multifactorial nature of the relationship. Overall, major depression
can be considered an emerging cardiovascular risk factor of moderate magnitude, relevant for
comprehensive risk assessment and management, while further research is needed to clarify
causal mechanisms and identify effective interventions that translate into improved cardiovascular
outcomes.
Keywords: Major Depressive Disorder, Cardiovascular Diseases, Myocardial Infarction, Stroke,
Mortality and Inflammation.
frecuentemente con enfermedades
1. Introducción
cardiovasculares
(ECV)
(1,2).
La depresión mayor es un trastorno
prevalente asociado a alta carga de
discapacidad global, coincidiendo
Diversos estudios sugieren que la
depresión se vincula con un aumento