It was interesting to see the boxes of shakes that were sent home for the rest of the trial, also the longing to eat 'real food'. I was surprised about the 'introduction' of exercise - 5 minutes walking after 30 minutes sitting, because while the bodies were adjusting to the liquid diet they lacked energy. How many of us can afford to take 4 weeks holiday from whatever job to sit around and then on our return to work insist that we have time for a 5 minute walk every half hour? In an ideal world, focussed around the health of the individual, maybe, but as another thread on here says we need to look after ourselves.
It would be interesting to se the results of a sample test of 'real people' in 'real jobs' who are directed to a lower carb way of eating. It would give slower weight loss (not such good TV) involve revisiting over a longer period of time (not so good for TV) but would give a more realistic approach that people could try.