<<Now the "Not permitted" list includes turnips (which I would guess
would include the yellow turnip or rutabaga) with potatoes. But compare
the carbs in potato vs. turnip to see why turnips are considered a
potato substitute for low carb eaters.>>
Here are some glycemic index's of common root vegetables
ROOT VEGETABLES (white bread = 100)
Carrots 70
Yam 73
Sweet potato 77
Potato, white, not specified, boiled 80
Beets 91
Potato mashed 100
Swede (rutabaga) 103 [note: closely related to turnip]
French fries 107
Potato, microwaved 117
Potato, instant 118
Potato, baked 121
Parsnips 139
source: www.mendosa.com/gilists.htm
Rob