Avoid crash dieting. Some people think that eating very few calories every day will help them lose weight. While you'll probably see some weight loss from this, it is overall counterproductive. First of all, it slows down your metabolism, so the calories you do eat stay around longer. Second, you'll probably lose muscle as well, which means your body won't burn as many calories. If you want to lose weight, crash dieting is not the way to do it.
Many diet plans rely on meal-replacement shakes, bars or other snack type foods, while others rely on frozen entrees as a major part of your diet, like Medifast and Nutrisystem. Ask yourself if you want the bulk of your diet relying on prepackaged snacks, shakes or frozen meals, or if you prefer the flexibility of cooking your own meals or eating out frequently.
Regardless of which camp you're in, if you do decide to try out a low carb diet, the Atkins Diet is the gold standard. Atkins has been proven effective for both short- and long-term weight loss, and studies show it is just as effective in lowering cholesterol levels over the long term as low fat diets for many people. As with any diet program, it may not be effective for everyone. While Atkins does initially restrict carbs to very low levels, the plan adds in more carbohydrates as you lose weight. It's also easy to follow, say users, and it's restaurant friendly -- hold the bread and order an extra vegetable instead of a potato.