Weight loss pills have been the subject of much debate. Are they safe for everybody? Who should use them? Who shouldn't?

As you know, weight loss pills are a billion-dollar industry. It is easy to be tempted by the claims: Take one little pill and lose all the weight you want, without having to change your diet and exercise habits.

In many cases, these pills are scams. The pills contain nothing that actually contributes to weight loss. Often, it's the eating plan included in the packaging that actually contributes to the weight loss.

In other cases, there is weight loss, but it comes at a price. Products that contain ephedra have been shown to increase blood pressure or cause an irregular heart beat. Others contain conjugated linoleic acid (CLA) or chitosan. These and other substances have been shown to cause gastrointestinal problems. Those that contain caffeine can make people edgy and irritable.

Also, while weight loss pills may help people lose weight, the pounds may come right back once the pills are stopped. This leads to yo-yo dieting, which puts a lot of stress on the body.

So if weight loss pills are unsafe and ineffective, should anyone use them? People who only want to lose a few pounds in order to look better in their clothes probably should not. By concentrating on healthy eating and increasing activity, they will lose the weight and keep it off.

However, there are people who are morbidly obese and need to lose the weight for medical reasons. If they have not been able to lose weight by any other means, weight loss pills can help. The best solution for these people is to use the pills under a doctor's care.

There are many prescription weight loss pills but each has their own advantages and disadvantages. They may help to suppress appetite or they may also have a diuretic that will help to quickly shed water weight. While these pills may be effective they can cause gastrointestinal or other problems. Also, the long-term effects of the newer prescription weight-loss pills are not yet known.

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In order to lose weight, the best plan will always be to follow a sensible diet and to exercise. A good weight loss plan is really not all that complicated. Start out by simply cutting out junk foods and cutting out seconds. Ignore the vending machine. Don't eat your child's leftovers. Either bring along fruits and vegetables to snack on or change your habits so you won't be prone to mindless eating.

In terms of exercise, the rule is to simply get moving. Walk three times a day for 10 minutes each. That's all you need to do to get started. If you are already doing that but want better results, walk longer, faster and/or more often to burn more calories. Try another activity if you want, as long as it gets your body moving.

While weight-loss pills can help obese people to shed pounds, they should only be used as a last resort under a doctor's care because of the risks and unknown long-term effects. But whether pills are used or not, you must eat fewer calories than you burn up through activity.

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