It is necessary to eat enough to lose weight. If you try to starve your self you may end up retaining fat when you do eat a normal meal.
For example, a 45 year old woman, 5′ 4″, 150 pounds who is sedentary (no exercise, desk job) needs to eat 1667 calories per day to maintain her weight and 1167 calories per day to lose 1 pound per week. If she is lightly active (light exercise/sports 1-3 days per week) she needs to eat 1910 calories per day to maintain and 1410 calories per day to lose 1 pound per week.
Why not eat some good food? Here are some great non-diet meals. Get them free here: Relax and Lose Weight. They are at the bottom of the page.
Tonight I am preparing the Shrimp with Red Sauce over Angel Hair Pasta. We can enjoy a healthy satisfying meal without fear of over doing it and gaining weight.