The average height of an adult male human is about 1.8 m (5 feet 11 inches) tall and the adult female about 1.6 to 1.7m (5 to 5.5 feet) tall. This size is firstly determined by diet and secondly by genes. Body type and body composition are influenced by postnatal factors such as diet and exercise.

• The skin is the human body's largest organ.
  Read more
• 1 in 500 humans are born with more than 5 fingers on a hand. This is referred to as polydactyly.
  Read more
• Humans have dormant genes that can direct the body to grow new limbs after an injury.
  Read more