Stay away from diets that focus on losing weight quickly...
Not only are they unhealthy, but most of the weight you lose is water weight. Once again, do you want to lose water or fat? If you want to lose fat, you most definitely will not be losing it quickly unless you know how to burn fat. Being that you are losing mostly water on these quick weight loss diets, you will soon find out that you will gain the weight back just as quick as you lost it (if not faster).
You must eat! If your body thinks you are starving, it will feed on your muscle tissue for energy. It is not enough to just take in enough calories each day for energy, but it is how often you feed your body the calories. In order for your metabolism to function correctly, you must eat at least 5-6 meals per day. The total calories of the 5-6 meals should equal the amount of your daily calorie intake. Eating throughout the day, gives your metabolism fuel to keep burning your stored body fat. That said, you should still cut down on your calorie intake to lose weight, but you also must know how many calories per day is right for your body.
Stay away from diets that say you must eat protein and carbohydrates separately...
Protein and carbohydrates work together within your body; they are team players, not individuals.
Think of it like this:
Mr. Protein needs to take a taxi to get to the muscles cells to help build and condition them. Mr. Insulin is the taxi and Mr. Protein is not capable of calling a taxi, so Mr. Carbohydrate will always call Mr. Insulin to transport Mr. Protein to the muscles. The muscles cells love Mr. Protein, but they also must have Mr. Carbohydrate for energy. Mr. Carbohydrate is very outgoing and there is a lot of him to go around, but too much of him is bad. On the other hand, not enough of him is also bad.
Muscle cells only need enough carbohydrates to fill the glycogen stores. If more carbohydrates are present, it will get stored as fat. Eating protein and carbohydrates will slow down the absorption of carbohydrates which means that your body will have time to burn off the extra carbohydrates before they are stored as fat. So why not just significantly lower your carbohydrate consumption? Because too much protein and very low carbohydrates will cause you to overburden your liver and kidneys; could cause dehydration (most people do not realize that metabolizing protein requires you to drink more water); and your body will not get the right amount of its preferred source of energy-carbohydrates.
So you see, eating these two nutrients together allows your body to function like it should. The key is to know how much carbohydrates and protein is the right amount to satisfy your body’s needs.
Bottom Line when it comes to dieting and weight loss: Losing weight is easy. Losing weight by losing fat the healthy way is more of a challenge. Don't get caught up into just losing weight. Understand that you need to stay healthy at the same time that you are losing weight by losing fat.