Sometimes when you research a question, poof your answer is clear, defined, lots of material out there. That”s how I like it. This question was like searching for the Holy Grail. Not much information, not any studies proving definitively anything. Here”s what I found.
An average adult has 206 bones in their body. People can have different number of rib bones and bones in their hands and feet that make doctors average the number of bones in a skeleton. Bones themselves can have different densities. We know this from people who have thinning bones due to Osteoporosis.
The interesting thing that is substantiated on this quest is heavy people with a BMI over 33 never get Osteoporosis. They have greater bone density. Bone density is increased when you do activities that put stress on the bone structure like weight lifting or in this case carrying around excess weight.
So is there truth to the heavy weight, big bones, big frame? Not really. Bone weight depends on how much a person”s entire body weighs. Bones make up around 15% of a person”s total body weight. While people do have different frame size, most who weigh too much for their height do so because of excess body fat. Body builders are the exception. Remember muscle mass weighs more than the same volume of fat and lean muscles make you look thinner (so if you have lots of muscles you may weigh more but look thinner).