Many people who die suddenly had quietly wrecked the longest organ in their body — long before that one minute.
It starts forming in the first month of embryonic development. When the heart begins to beat, blood vessels begin to grow, endlessly. By adulthood, the total length of your blood vessels reaches about 100,000 km — enough to circle the Earth's equator two and a half times.
The Body's Highway System
Vessels reach into skin, muscle, and cartilage, through every tissue and organ. It is the expressway inside you, delivering oxygen and nutrients non-stop, every second of your life.
The Highway Ages — and Clogs
When you are young, blood vessels are soft and elastic. With age they inevitably stiffen and harden, and that leads to congestion in the vessel — the doorway to all kinds of cardiovascular disease.
The catch: modern habits are making vessel hardening appear in young people earlier and earlier. A "road construction — detour" sign is going up inside arteries that should still be in their prime.
Late Nights: The Spark That Lights the Fuse
Staying up late is likely the fuse. Three things happen in sequence:
Blood pressure climbs. To support the body's late-night overdraft, the kidneys secrete adrenaline and noradrenaline, making the heart beat faster and blood flow quicker — raising blood pressure.
Blood pools and thickens. Night owls tend to sit for hours. Blood gathers in the lower limbs, flows too slowly, turns viscous — and viscous blood easily forms clumps: thrombosis. For the occasional night owl, the small clots may still be dissolved and absorbed. For the chronic one, small clots grow, become hard to reverse, and trigger an even worse chain reaction.
Leptin drops, appetite explodes. To cover the overdrawn energy bill, the body suppresses leptin — the hormone that suppresses appetite. Suppressed leptin means hunger. So night owls binge-eat. The fat they eat enters the blood directly; excess sugar and protein get converted by the liver into fat, which also enters the blood.
LDL: The Delivery Trucks That Became a Problem
The body has low-density proteins that carry fat to different tissues — and this pushes blood lipids up fast. Evolution explains why: our ancestors lacked energy intake, so the body evolved to make two-thirds of its lipid carriers low-density transport proteins. It was a survival design. In the modern all-you-can-eat era, the design backfires.
As lipid levels rise, the clear serum turns into a pale-yellow, even white, viscous liquid — chylous blood. Chylous blood is a killer of vessels.
Four Assassins Dig the Holes
Add excess salt, nicotine, carbon monoxide, and alcohol — four assassins working together to damage vessels and leave pits on the aging vessel wall. Studies show that excess salt can raise blood pressure within just 30 minutes and impair the vessel's ability to dilate.
From Pits to Plaques to Stone
Lipids slip into those pits and form large, hard lumps whose contents are yellow and porridge-like — atherosclerosis. As lipids accumulate, fibrous tissue grows and wraps the plaques.
Then the fibrous tissue degenerates and necrotizes, the inside calcifies into a rock-hard atheroma — so hard that in late stages even a scalpel can't cut it.
These atheromas narrow the vessel — and as the vessel ages further, the plaque can rupture into the blood at any moment.
