Dear Nila
I personally know someone who has lost nearly 60kg on MB diet over a period of 3-4 years. He didn't think he had any health problems - only when these problems (headaches, digestive problems and more) have disappeared he realized he was suffering!
I have started macrobiotics myself because I was curious. I also thought that my health was quite OK when I started, and was very surprised that after a few months my allergies have disappeared never to return again
MB is not a diet that is specifically meant for weight loss.
It is meant to bring the body to a state of balance.
If you apply MB principles correctly, then your body will adjust itself and will do the work of bringing itself back to balance, which will probably result in losing weight in your case.
To really enjoy the benefits of MB I suggest that you go to cooking classes - MB food is very special and can be very delicious if you know how to make it.
As opposed to other dietary regimens that suggest a limited diet for a limited time, with food that is usually not very satisfying, once you adapt to macrobiotics, then you find that macrobiotic food is very rich and versatile, and that macrobiotic cooking can be a real pleasure.
Good luck
Karny
P.S. - If you are interested to study more about MB, I also suggest that you read about it. A nice book is "The Macrobiotic Way" by Michio Kushi, it explains about the theory, the food and also gives nice lifestyle suggestions.