About Blood

Blood: The Lifeline of the Human Body

Blood is a vital fluid that circulates through the body, delivering oxygen, nutrients, hormones, and immune cells while removing waste products. It plays a crucial role in maintaining health, immunity, and survival.

Functions of Blood

Oxygen Transport: Red blood cells carry oxygen from the lungs to tissues.

Nutrient Distribution: Delivers glucose, amino acids, and vitamins to cells.

Immunity: White blood cells defend against bacteria, viruses, and infections.

Clotting & Healing: Platelets help stop bleeding after an injury.

Temperature Regulation: Maintains body temperature and pH balance.

Waste Removal: Removes carbon dioxide, urea, and toxins via kidneys and lungs.

Blood Types & Compatibility

Blood Type Can Donate To Can Receive From
O- (Universal Donor) All blood types O-
O+ O+, A+, B+, AB+ O+, O-
A- A-, A+, AB-, AB+ A-, O-
A+ A+, AB+ A+, A-, O+, O-
B- B-, B+, AB-, AB+ B-, O-
B+ B+, AB+ B+, B-, O+, O-
AB- AB-, AB+ AB-, A-, B-, O-

Blood-Related Diseases & Disorders

Anemia – Low red blood cell count, causing fatigue and weakness.

Leukemia – Cancer affecting white blood cells.

Hemophilia – A rare condition where blood does not clot properly.

Thalassemia – A genetic disorder causing abnormal hemoglobin production.

Dengue & Malaria – Can lead to low platelet count and severe bleeding.

Importance of Blood Donation

Used for surgeries, accidents, cancer treatments, and blood disorders.

Regular donations ensure a steady supply for hospitals.

Blood has a limited shelf life, making frequent donations essential.

World Blood Donor Day: Celebrated on June 14 every year to raise awareness.