Q&A What are the top 10 elements in the human body? (By proportion of total body mass) 19th July 2018 Try 5 issues for just £5 when you subscribe to BBC Focus Magazine!* The Human Body © Raja Lockey Read more: Top 10 most Vitamin D rich foods What cells in the human body live the longest? Subscribe to BBC Focus magazine for fascinating new Q&As every month and follow @sciencefocusQA on Twitter for your daily dose of fun facts. Read more Q&As Why do giraffes have purple tongues? Why do we make eye contact with strangers as we pass them? How big could a black hole get? What colour is water? Could a gas moon exist?