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How much of your body is your own?

Of all the cells in your body, how many are actually yours?

This story is part of BBC Earth's "Best of 2016" list, our greatest hits of the year. Browse the full list.


• Bill Gates is actually worth $1,956
• Canadian pop star Justin Bieber has five times fewer cells in his brain than in his liver
• Top tennis player Serena Williams has 24.5 trillion red blood cells powering her body
• Internet and social media pioneer Mark Zuckerberg’s body contains 800MB of data
• President Barack Obama’s head rules his heart; his brain weighs 1.4kg, his heart just 0.4kg

Welcome to The Making of Me and You, a unique, new digital interactive from BBC Earth that details extraordinary personalised facts.

Just input your date of birth, sex at birth, height and weight, and choose the metric or imperial units that make most sense to you.

And instantly find out:

• The chemical ingredients that make up you, and what your body is worth
• How many atoms you are made of, and what can be made with them
• How many fat, blood, skin and brain cells you have
• How much genetic data is inside you
• How many other microbes live on your body with you
• The size and weight of your internal organs
• How much wee, poo, sperm or eggs you have produced so far
• How many times you have blinked, breathed, yawned and farted
• And so much more

Explore, enjoy, and share with your friends either the whole page, or your favourite insights, comparing your vital statistics.

This is our story, the story of the making of me and you.

You can enjoy the experience on mobile, tablet and desktop. Chrome, Firefox, Safari and Internet Explorer 10 and above are the best browsers to use.

BBC Earth's The making of me and you is based on the following sources.

Produced for BBC Earth by Beyond Words.

Lead photo credit: Beyond Words

Data used to calculate celebrity statistics:

  Bill Gates 

Date of birth: 28 October, 1955. Sex: Male. Height: 177cm, Weight: 67kg

Source: http://www.howmuchisnetworth.com/t11-bill-gates-net-worth-2016

  Justin Bieber

Sex: Male. Date of birth: 1 March, 1994. Height: 175 cm, Weight: 66 kg

Source: http://healthyceleb.com/justin-bieber-height-weight-body-statistics/1384

  Serena Williams

Date of birth: 26 September, 1986. Sex: Female. Height: 170 cm, Weight: 70 kg

Source: http://heightandweights.com/serena-williams/

  Mark Zuckerberg

Date of birth: 14 May, 1984. Sex: Male. Height: 175 cm, Weight: 73 kg


President Obama

Date of birth: August 4, 1961. Sex: Male. Height: 185 cm, Weight: 81.6kg

Source: White House medical exam https://www.whitehouse.gov/sites/default/files/rss_viewer/potus_med_exam_feb2010.pdf