From Scientific Computing Magazine:

A woman believed to be the world’s fattest at 50 stone (700lbs) is facing a battle to shed weight after being told by doctors she could die.

Terri Smith is confined to her bedroom in her Ohio home unable to move, stand or roll over by herself.

Suffering from severe headaches which doctors fear could stem from a brain problem, Terri urgently needs a brain scan – but is too big to fit inside an MRI machine.To undergo the scan and receive the life-saving treatment she may require, Terri is now embarking on a weight loss regime of exercise and healthy eating.

Continued at Scientific Computing Magazine