Drinking your own blood is generally harmless, but it is not recommended. Blood is a red, opaque, viscous liquid that flows through the blood vessels and heart of humans. It accounts for approximately one-thirteenth of an adult's body weight, with a relative density of 1.050 to 1.060, a pH value of 7.3 to 7.4, and an osmotic pressure of 313 mm/L.
Blood is composed of plasma and blood cells. One liter of plasma contains 900 to 910 grams of water, 65 to 85 grams of protein, and 20 grams of low-molecular-weight substances, which include various electrolytes and organic compounds. Blood cells include red blood cells, white blood cells, and platelets.
Human blood contains a large amount of toxins and waste products such as free radicals, chemical residues, heavy metal particles, blood rust, and fat particles. These toxins, waste, impurities, and endogenous debris are collectively referred to as blood poisons. While drinking your own blood will generally be naturally metabolized and will not affect your health, it is not beneficial and is not recommended.
The functions of blood include both blood cell functions and plasma functions, including transportation, regulation of body temperature, defense, regulation of osmotic pressure, and acid-base balance. Red blood cells primarily function to transport oxygen and carbon dioxide, while white blood cells primarily function to kill bacteria, resist inflammation, and participate in immune responses. Platelets primarily function to stop bleeding. Plasma functions mainly involve nutrition, lipid transportation, buffering, osmotic pressure formation, immune participation, and coagulation and anticoagulation.
