In regards to the CSIRO diet, I too watched the debate and read the article in the paper. I can only speak from my experience wth it... I started the CSIRO back in October and stayed on it for 3 weeks before falling off the wagon, so to speak! The 'level' that was recomended for me suggested that for dinner I eat 4 serves of red meat per week (200g each serve which is 800g red meat in total for a week), 2 x 200g serves fish per week and 1 x 200g serve chicken.
I felt this was too much red meat, so only ate red meat for tea twice a week and had fish and chicken instead, to make up for the rest. In 3 weeks, I lost 4.5 kilos and didn't exercise during that time.
I did not feel hungry or get headaches and felt really good. The only thing I struggled with and probably one of the reasons I stopped, was preparing my lunches to take to work. I have now started on it again, and since starting on Monday, I have already lost 1kg!
Just thought you might want to hear from someone who has done it. I guess it doesn't work for everyone but I find it works for me. I also don't consider it a 'fad' diet but rather a healthy lifestyle change, which is somethging that can be implemented permanently as it contains good quantities of fruits, vegies, fats, dairy etc.
Being on the CSIRO for me, doesn't feel like a diet. When I have tried things such as detox diets or liver cleansing diet etc, I have always been moody, felt tired and experienced terrible headaches. This is yet to happen for me on CSIRO.
What works for one person doesn't always work for another, so good luck on whatever eating plan you're on. Hang in there everyone!