Weight Loss Supplements How They Work
Dietary weight loss supplements are abundant in our society. There are entire aisles dedicated to them in drug stores, and late night television commercials barrage us with their ultimate powers to provide quick weight loss. With so many to choose from and so many claims of success, how are people to decide which one is the right one for them?
The most popular and most widely used diet pills are those that are appetite suppressants like Phentermine and Phentramin-D. The logic behind these is that with less hunger, there will be less calories consumed, thus resulting in weight loss. In general, these appetite suppressants work by increasing serotonin and catecholamine levels. These two chemicals are known to control mood and appetite. The claim is that these supplements actually trick the body into believing it is not hungry or is full. They can be sympathomimetics, which act similar to stimulants and raise blood pressure, thus decreasing appetite or they contain high amounts of fiber which is difficult to digest and can leave us feeling fuller for a longer period of time.
Still other dietary supplements can act as fat blockers. These do not work on the central nervous system or brain and they do not actually burn fat that is already present in the body. Most contain chitosan which is a natural indigestible fiber that binds to fat. This active ingredient inhibits the enzyme lipase in the gastrointestinal tract and prevents the body from breaking down and absorbing the fat taken in through food. The fat that is not absorbed is eliminated from the body through the stool passed in bowel movements. Some caution should be used as these fat blockers can also affect the absorption of fat soluble vitamins which can cause some deficiencies. There is also a tendency for some less than desirable side effects which may cause some problems in the bathroom.
Those weight loss supplements that claim to have the power of raising metabolic rate are also abundant on the market. Also known as fat burners, these often contain a great deal of caffeine or caffeine like ingredients. Ephedra is one example, and these pills must be used with caution as they can raise heart rate and blood pressure which can be dangerous for some people. In fact, Ephedra or any product containing it is illegal in the U.S. The idea behind this type of diet pill is that the stimulants in them will boost energy levels (caffeine also tends to lower the appetite), thereby encouraging the consumer to burn more energy through exercise. It is important when trying to raise metabolic rate to eat regular meals as the body will go into starvation mode if deprived of sustenance. This will result in a lower metabolism.
Whichever of these types of diet pills you decide is best for your purposes, it is imperative that you not rely on them solely for long-term, maintained weight loss. While they can be great supplements, that is exactly what they are. They must be combined with a healthy diet and a safe exercise program. Always check with your physician before beginning a program with any diet pill or diet program to ensure your safety and health.