In June 2012 I was 240 lb at 5 feet 11 inches. I started such a diet:
Breakfast: 2 boiled eggs, 1 piece of rye bread with liver spread, 6 green olives, 1 cup of green tea.
Dinner: 1 tomato + 1 cucumber salad and 1 piece of rye bread.
I also drank as much water as possible. That's it.
)
OK, I also used walking - about 10 miles per day. So in September 2012 I was 160 lb and felt fine.
Now after two years and a half I'm still about 170 lb and still feel fine. So I think everything is up to one's will.
)