I think the program is to advertise the expensive book/ meal plan/ website or whatever, and the Mail is helping them cash in, which is fine, it spreads good knowledge, but not all of us have a spare £100, so further thought may be profitable
In my online researches I found it's only safe for two weeks because after that it makes your brain sleepy. Perhaps.
Also, pears are less sweet than bananas(?) Banana is known for being high in carbohydrates and fruit grown in low sunshine levels produce less sugar, (which is why strawberries need sun)
Ok I'm now trawling through 'River Cottage Veg Every Day' for a DIY version, probably curry without rice, soup without bread, salad without cold potato ..... maybe it'll work
Reintroduce cold potato and porridge oats and brown rice and wholemeal bread after the first two weeks is up, and stay like that in the long term
We like what we're used to, so getting used to something good for us, is good for us