It is not recommended on 30BaD: Benefits of Lettuce Greens
Dr. Doug's response on greens:
They are not following 811 at that point. I have not seen long-term fruitarians succeed, and have seen huge numbers of them fail (and too many die) over the almost four decades since I first started my dietary journey. My thoughts? DON'T do it. And certainly don't associate fruitarianism with 80/10/10. In my book, I recommend eating 2 to 6% of calories from green, leafy vegetables. This amounts to 40 to 120 calories for a person eating 2,000 calories (which, by the way, is very unlikely to be enough food for a person doing enough physical activity to be healthy). Forty calories is roughly a medium-sized head of lettuce. That is the absolute minimum I would suggest, and two to three times that is far more likely to provide adequate nutrition. People who eat more than 2,000 calories should adjust accordingly.
Anne Osborne is a fruit only gal but she does eat cucumbers which has some good minerals in it: a good source of Vitamin A, Pantothenic Acid, Magnesium, Phosphorus and Manganese, and a very good source of Vitamin C, Vitamin K and Potassium.