Just thought I'd share in case it's useful to anyone...
Did low carb for 18 months but didn't lose apart from the initial glycogen loss. Loved it though - less uncontrollable hunger, less peaks and troughs and lots of lovely cheese, eggs, meat and veggies. And maintained weight where I'd been putting it on before despite eating loads. Another problem I had though was constipation. Flax seed just didn't do it for me.
Then decided I must lose weight for holiday I'm going on in 2 weeks. So about 6 weeks ago started to calorie count as well as low carb - 1300 calories a day (plus milk in coffee which I don't count - abt 6 cups a day I'm afraid).
And it is working! I used to hate diets, feel weak, get mouth ulcers, feel totally miserable. But on low carb it's been totally manageable and I feel I can go on for a long time. I'm still hungry, sometimes really hungry, but it's not bothering me so much because my body is coping really well.
Typical day-
30g bran flakes or 2 egg veggie omlette (about 200 calories - I don't put a lot of butter/cheese in the omlette like I used to)
Salad with ham or coleslaw (about 300 calories) loads of lettuce, cucumber, celery to make it huge!
Meat/oily fish with grilled veggies/swede mash/lots of steamed white cabbage which really fills me up!
9lb down another 9lb to go!!!