According to researchers from the University of Minnesota, using diet pills tends to continue into adulthood. Consistently, side effects of using diet pills are found among teenagers. Since diet pills suppress appetite and change metabolism, they interfere with regular functions giving many side effects. These include restlessness, dizziness, dry mouth, and constipation to serious effects such as insomnia. What’s more teenagers who use diet pills may get alarming side effects such as elevated blood pressure, faster heart rate, drug addiction or even death. With these facts, it is not safe for teenagers to take any diet pills. Besides, containing many harmful chemicals that have adverse effects on teenagers, diet pills are not proper for them at all. Many diet pills are addictive causing health problems as mentioned above. Seriously, taking diet pills over a long period of time may cause death in teenagers.