- Human brain weight is the mass of the adult brain, usually 1,300–1,400 grams in males and slightly lower in females. It makes up about 2% of body weight and controls all body functions.
- Females generally have 100–150 grams less brain weight than males due to natural biological differences.
- A large Swiss study found average brain weights of about 1,340 grams in males and 1,200 grams in females based on autopsy data.
- Brain weight varies with age, sex, and body structure and does not determine intelligence.
- The heaviest recorded human brain was about 2,850 grams (1899 case in the Netherlands).
- Brain weight is highest in young adulthood and slowly decreases with aging.
- Compared to other animals, the sperm whale has a much heavier brain (~7,800 grams) than humans.
- The brain uses about 20% of the body’s oxygen, making it a highly energy-demanding organ.
- Brain weight is an important factor in neurological and aging research.
SRC: britannica.com
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