Cardiovascular risk and hormone replacement therapy

Debbie A Lawlor1, George Davey Smith

  • 1Department of Social Medicine, University of Bristol, Bristol, UK. d.a.lawlor@bristol.ac.uk

Insights

Hormone replacement therapy (HRT) does not protect against coronary heart disease or stroke. Effective cardiovascular disease prevention in women involves managing lifestyle factors like smoking and blood pressure.

Area of Science:

  • Cardiovascular Medicine
  • Endocrinology
  • Women's Health

Background:

  • Hormone replacement therapy (HRT) is used to manage menopausal symptoms.
  • Its impact on cardiovascular disease (CVD) risk remains a critical area of research.

Purpose of the Study:

  • To review human studies on the relationship between HRT and coronary heart disease (CHD) and stroke.
  • To synthesize evidence from randomized controlled trials (RCTs) regarding HRT's cardiovascular effects.

Main Methods:

  • Analysis of nine secondary prevention RCTs and four primary prevention RCTs.
  • Inclusion of a pooled analysis of 22 RCTs with non-cardiovascular primary aims.
  • Evaluation of evidence on HRT's effect on CHD, stroke, and atherosclerosis progression.

Main Results:

  • Most RCTs indicate HRT either increases CVD risk or has no effect.
  • One small primary prevention RCT suggested a minor protective effect on carotid artery thickness.
  • Overall evidence does not support a protective role for HRT in cardiovascular health.

Conclusions:

  • RCT evidence suggests HRT is not protective against CHD, stroke, or atherosclerosis.
  • Cardiovascular disease prevention in women should prioritize established methods.
  • Effective strategies include managing smoking, obesity, hypertension, dyslipidemia, and glucose intolerance.
Abstract

Related Concept Videos

Hormonal Regulation of Blood Pressure01:17

Hormonal Regulation of Blood Pressure

Endocrinal or hormonal intervention in the cardiovascular system is predominantly exerted by the catecholamines - epinephrine and norepinephrine, as well as a slew of hormones that interact with renal function to modulate blood volume.
Epinephrine and Norepinephrine
The adrenal medulla releases epinephrine and norepinephrine, catecholamines that enhance and extend the sympathetic or "fight or flight" physiological response. These hormones escalate heart rate and the force of contraction while...
Atherosclerosis III: Management01:26

Atherosclerosis III: Management

Management of atherosclerosis involves an integrated strategy encompassing pharmacological treatment, surgical interventions, lifestyle changes, and nutrition therapy to address the multifactorial nature of the disease.Pharmacological TherapyA cornerstone of atherosclerosis management is the use of pharmacological agents. Statins, such as atorvastatin, are pivotal in inhibiting HMG-CoA reductase, an enzyme that catalyzes an initial step in cholesterol synthesis in the liver. This reduction in...
Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers01:19

Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers

Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
Coronary Artery Disease I: Introduction01:30

Coronary Artery Disease I: Introduction

Coronary Artery Disease (CAD): An Overview with Scientific InsightsCoronary Artery Disease (CAD), often referred to as C-A-D, is a prevalent blood vessel disorder classified under the broader category of atherosclerosis. Atherosclerosis is a pathological process characterized by the hardening and narrowing of arteries due to the accumulation of atherosclerotic plaques. These plaques are composed of cholesterol, fatty substances, inflammatory cells, calcium, and fibrin, reducing blood flow to...
Target Cell Response to Hormones01:22

Target Cell Response to Hormones

Hormones intricately bind to receptors on the surface or within target cells, initiating a cascade of cellular responses.
Notably, the cellular response can be regulated by altering the number of receptors expressed in the cell. For example, prolonged exposure to elevated hormone levels results in a gradual decline or down-regulation in the number of receptors for that specific hormone on the cell surface. Conversely, in response to low hormone levels, cells may use up-regulation, producing an...
Psychoneuroimmunology: Cardiovascular Disease01:27

Psychoneuroimmunology: Cardiovascular Disease

Psychoneuroimmunology (PNI) is a multidisciplinary field that examines how psychological factors, particularly stress, interact with the immune system and impact physical health. Research in PNI has shown that chronic or traumatic stress can disrupt both the hypothalamic-pituitary-adrenal axis and the sympathetic nervous system. These disruptions contribute to serious health conditions, including cardiovascular diseases.
A key area of focus in PNI is the relationship between stress and coronary...