# Heavy Bones

**URL:** <https://boards.straightdope.com/t/heavy-bones/503632>\
**Category:** Factual Questions\
**Created:** [July 20, 2009, 3:46pm UTC](https://boards.straightdope.com/t/heavy-bones/503632 "2009-07-20T15:46:41Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![bri.kates](https://avatars.discourse-cdn.com/v4/letter/b/45deac/32.png) [@bri.kates](https://boards.straightdope.com/u/bri.kates)\
**Post date:** [July 20, 2009, 3:46pm UTC](https://boards.straightdope.com/t/heavy-bones/503632/1 "2009-07-20T15:46:41Z")

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Is it possible that some people’s bones are heavier than others (thus explaining why some seemingly same-sized people would weigh different amounts) or should a person’s weight be wholly attributed to muscle and fat?

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**Author:** ![Long\_Time\_First\_Time](https://avatars.discourse-cdn.com/v4/letter/l/ad7895/32.png) [@Long\_Time\_First\_Time](https://boards.straightdope.com/u/Long_Time_First_Time)\
**Post date:** [July 20, 2009, 3:58pm UTC](https://boards.straightdope.com/t/heavy-bones/503632/2 "2009-07-20T15:58:33Z")

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Yes, bones vary in density. Some people’s bones have more mineral in them and are heavier than others. Lack of mineral content in bones is termed osteoporosis - leading to easily fractured bones and debilitation.  
However, the difference between the heaviest bone and lightest bone of any given size isn’t much - differences in muscle mass are probably responsible for 2 people of similar stature and size weighing significantly different amounts.