How important is it to add a protein supplement to my diet?

I guess it depends on how much protein you eat now, but it is tough for me to get adequate protein on a reduced calorie diet without the help of supplements. I'm a male and not much of a meat eater. I love my carbs. I shoot for 150 gm per day protein per day minimum. I drink about two shakes a day, which accounts for over 50 gs of protein. Lifting weights will also help minimize lean body mass loss, but almost everyone will lose lean mass on extended diets.

It's definently worth a try, but try to find something low in sugar! I incorporate whey protein into my diet (I'm a vegetarian) and it makes me feel a lot better, and I tend to have more energy. You may not need one, but you may like it!