The global leading cause of death is a silent circulatory crisis

Science · Published 25 October 2026 Swipe more like this →

In short: Cardiovascular disease (CVD) isn't just a single ailment; it is a collective term for diverse conditions affecting the heart and blood vessels. From blockages in the brain to damage from bacteria, these disorders represent the primary threat to human life worldwide.

In 2022, an estimated 19.8 million people died from cardiovascular diseases globally, accounting for approximately 32% of all deaths. Of these fatalities, 85% were specifically attributed to heart attacks and strokes. The burden is disproportionately heavy in low- and middle-income countries, where over three quarters of CVD deaths occur. Furthermore, CVDs are a major driver of premature mortality; in 2021, at least 38% of the 18 million noncommunicable disease deaths occurring before age 70 were caused by these conditions. These conditions represent a significant portion of noncommunicable deaths in Europe, where they account for about 50% of all fatalities. In contrast, they make up roughly 30% of global deaths overall.

Atherosclerosis, which involves fatty deposits accumulating inside vessel walls, serves as the primary process behind numerous prevalent CVD conditions. This process can lead to coronary heart disease, where blood flow to the heart is restricted; peripheral arterial disease, which affects the legs and feet; and cerebrovascular diseases, such as strokes caused by sudden blockages or bleeding in the brain. Aortic disease is another group of conditions affecting the body's largest blood vessel, which can lead to abdominal aortic aneurysms. Additionally, deep vein thrombosis involves clots in leg veins that may move toward the heart or lungs as pulmonary embolisms.

Other distinct types include rheumatic heart disease, caused by streptococcal bacteria damaging valves and muscles, and congenital defects present from birth. While genetics and age play roles—with CVD primarily affecting those over 50—the majority of these diseases are preventable through addressing behavioral and environmental factors. Key drivers include tobacco use, unhealthy diets high in salt and fats, physical inactivity, and air pollution. Clinical indicators like hypertension (high blood pressure), raised blood glucose, and high cholesterol often signal the progression of these underlying issues before acute events occur. Men generally face a higher likelihood of developing these diseases than women. Specific ethnic backgrounds, including South Asian and Black African groups, may also carry increased risks. Medical interventions like statins can help lower blood cholesterol levels to reduce future chances of disease.

General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.

Intellect Plus is a visual educational discovery platform for exploring fascinating facts and ideas. Brain Food, Not Brain Rot. What is Intellect Plus?

Related

• Most heart disease deaths track diet, not destiny alone
• Why cardiovascular disease remains the world's leading cause of death
• The world's leading killer often announces itself first with a heart attack
• The global statistics on what actually ends human life
• Why hypertension remains a silent global health crisis
• How to build a career in the age of AI agents
• When the heart muscle fails, the entire system faces a structural crisis
• What Carnie Wilson discovered after a lifetime of rock-and-roll chaos
• The hidden electrical choreography behind every heartbeat
• The unexpected predatory nature of the humble sea sponge
• The electrical blueprint that governs every single heartbeat
• The carotid bifurcation: a critical crossroads for your brain and face

More in Science · Latest · A–Z · All topics