Although there are quite a few different versions of this plan,
all require that you eat half a grapefruit before every meal,
to reap the benefits of the fat-burning enzymes. Calories are
typically limited to less than 800 per day, although some versions
require that you 'eat until you are stuffed'.
If you love grapefruit, this plan may be for you. Grapefruit
has no fat, is low in calories and sodium, is packed with vitamin
C, and the pink variety contains beta-carotene. You don't have
to count calories, and the plan causes rapid weight loss, primarily
due to loss of body fluids.
The lack of calories and the amount of caffeinated beverages
one has to drink make this diet dangerous, as this can lead to
dehydration. In addition, the diet is deficient in protein, fibre
and several important vitamins and minerals. Any diet that relies
this much on a single food is too restrictive