[metmom]

The toll on the human body has got to be more than simply weighing more. A 100 lb person weighing 220 lb could still walk around, but it would seem that all the weight bearing joints would be under far more stress and would deteriorate much more quickly.

[spunkets]

"it would seem that all the weight bearing joints would be under far more stress and would deteriorate much more quickly."

Right, and talk about a ton of bricks in the AM! LOL! The circulatory and repiratory systems would be stressed too.

[lepton]

The toll on the human body has got to be more than simply weighing more. A 100 lb person weighing 220 lb could still walk around, but it would seem that all the weight bearing joints would be under far more stress and would deteriorate much more quickly.

The bones would also become denser as the microfracturing that goes on all the time normally would be enhanced and result in much heavier bones. Then you'd have more robust tendons and ligaments, and muscles, and so forth - all increasing your mass even further. Falling down would be more injurious, even with the stronger structure.