You Won’t Believe These Mind-Blowing Facts About Human Blood

Blood is undoubtedly the most critical fluid within our bodies, essential for sustaining life. Comprising blood cells and plasma, it serves as the primary transporter of oxygen and nutrients to cells and all bodily tissues. Without blood, our ability to receive oxygen would cease, inevitably resulting in death.

Indeed, the intricacies of human blood are so vast and fascinating that they often leave us in awe. Despite scientific advancements, there remain many mysteries and unexplained phenomena related to blood. Below, you’ll find a compilation of incredible facts about blood that might surprise you and expand your understanding of this vital fluid.

1. Blood isn’t just red

Most animals, like humans, possess red blood. However, certain species such as octopuses and squids have blue blood. Additionally, some animals bleed green, while certain marine worms and brachiopods boast purple blood.

2. There are more heart attacks on Mondays

Heart attacks are more prone to occur on Mondays, with a secondary peak observed on Fridays. Research suggests that the stress associated with returning to work after the weekend plays a role in this pattern, as it leads to the release of stress hormones at the start of the week.

3. Physicians made attempts to transfuse blood since the 17th century

However, before the 19th century, all patients mysteriously perished until an Austrian physician named Karl Landsteiner discovered blood types.

4. There is a theory that our blood type determines our personality

In Japanese culture, there is a widespread belief that blood type serves as an indicator of our personality traits. This belief holds so much significance that it can influence relationships, potentially driving away potential partners, and even impacting job prospects.

5. Blood type O – the most common blood type

Due to their hunter ancestors, individuals with blood type O can digest meat more efficiently than other blood types. They are often viewed as self-assured and are considered natural leaders. However, blood type O individuals are also more prone to developing obesity and skin cancer.

6. Blood type B

In Japanese culture, individuals with blood type AB are often viewed as creative and expressive, particularly in their emotions and opinions. However, they are also more susceptible to health issues such as pancreatic cancer and diabetes.

7. Blood type A

Individuals with blood type A are more susceptible to cholesterol and cardiovascular issues. In Japan, they are highly valued in the workplace due to their punctuality, meticulous attention to detail, and research abilities.

8. Blood type AB

People with this blood type have a higher risk of cognitive impairment. They are believed to be unpredictable because they are a mixture of temperaments.

9. Our blood contains pure gold!

Human blood is rich in various elements, such as iron, zinc, copper, manganese, and even trace amounts of gold. The average human body contains approximately 0.2 milligrams of gold, with a significant portion of it concentrated in the blood.

10. Exposure to the sun may reduce blood pressure

Scientists theorize that exposure to sunlight can lower blood pressure, thus potentially reducing the risk of stroke or heart disease. They have found that nitric oxide plays a role in regulating blood pressure by decreasing blood vessel constriction, and exposure to UV rays can increase nitric oxide levels in the blood.

11. Older people are more prone to stroke because of capillaries

Capillaries are the tiniest blood vessels that act as connectors between arteries and venules. In the brain, they play a crucial role in clearing cholesterol and preventing blood clots. However, as individuals age, capillaries tend to recede, increasing the risk of strokes among older people.

12. Humans can live without a pulse

In 2012, a groundbreaking device was implanted in a heart patient named Stan Larkin, allowing blood circulation without a pulse. Larkin underwent a complete heart replacement with an artificial heart, enabling him to resume normal activities within days of the procedure. Remarkably, he carried the artificial heart in a backpack for an astounding 555 days until he underwent a successful full heart transplantation.

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