Which is why, during the trials, a group of doctors led by Robert Grossman of the Methodist Hospital, Houston, will monitor such things as the participants' bone density, respiratory function and cardiovascular systems, all of which are expected to improve when someone is no longer stuck in a wheelchair.

ECONOMIST: Bionics (I)

Nutritionists say that limiting caloric intake in a compressed time frame can lead to nutrient deficiencies, causing decreased immune function, dry skin and loss of muscle or bone density, for starters.

CNN: The #NYFW diet: Part of the job?