The possibility that the person taking the pills will become dependent on the pills. Most of the commercially available diet pills are particularly habit forming but the effect these pills have on a person's appetite can be addictive.
There have not been enough studies to determine if there are long term side effects to diet pills. If you take these pills prior to knowing exactly what these pills do to you long term, then you are putting yourself at risk.
Diet pills give people a false sense of what is possible when they are losing weight. Diet pills allow a person to lose weight fast however what happens when the person no longer takes the pills.
As with any drug your body can build up a tolerance to that drug over time.
It has been shown that diet pills will not be as effective after 5 - 6 months of use. People find that their weight loss slows down and levels off at that time.
All of the plans I have spoken about have strengths and weaknesses and each will help you lose weight. The most difficult aspect of any diet is sticking to it over the long term.
Important! You should ALWAYS consult your physician if you are think diet pills are a viable option for your diet plan. Also you should consult your doctor about any weight loss program you want to begin.
You need to make a commitment to nutrition and exercise in order to make your fight against your beltline a successful one. No diet or support group will take the weight off for you. To be successful you must make the commitment to changing your life.