The human heart weighs approximately 300 grams.
✅ Function of the Heart:
The primary function of the heart is to pump blood throughout the entire body. The heart beats approximately 72 times per minute and 100,000 times per day. Each time the heart pumps, it ensures that blood is distributed across the body.
Heart disease occurs when fat, cholesterol, and plaque build up in the arteries, causing them to narrow. As this buildup progresses, the blood supply to the heart decreases, leading to potential complications.
Heart disease is currently one of the leading causes of death worldwide. When blood supply to the heart is completely blocked, the heart stops functioning, resulting in a heart attack.
The arteries in the heart are typically 3-4 mm thick.
Heart blockages develop gradually over many years.
The heart requires different levels of blood supply depending on activity levels:
✅ 10% blood supply – When sitting or resting.
✅ 20% blood supply – When walking.
✅ 30% blood supply – When running or engaging in strenuous activity.
When blockages exceed 70%, heart-related symptoms start appearing, causing discomfort and pain.
✅ This means that most heart patients do not experience symptoms until blockages exceed 70%.
✅ If chest pain occurs while walking, it is known as "Angina."
After 20 years of age, blockages begin forming at a rate of 2% per year.
You have just learned about heart disease in a few minutes, but if you visit a hospital or clinic, they may not explain it in such detail. Instead, they might just tell you that you have "Coronary Artery Disease" (CAD).
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