Part 1 Body in perspective: evolving life; evolving humankind; human animal comparisons; body size and shapes; climatic adaptations; life expectancy. Part 2 Body systems: the body analyzed; major systems; skeletal system; muscular system; skin, nails and hair; nervous system; respiratory system; circulatory system; digestive system; urinary system; endocrine system; reproductive system. Part 3 Starting life: conception; pregnancy; childbirth; genetic factors; growing up. Part 4 Staying healthy: the food we need; ideal weights; personal hygiene; posture and exercise; sleep. Part 5 When things go wrong: infectious agents; body defences; bones and joints; headaches; circulatory problems; digestive problems; respiratory disorders; ear problems; eye problems; skin and hair problems; urinary disorders; hormone problems; organ transplants. Part 6 The ageing body: visible changes after 60; declining abilities; keeping age at bay.