Serious diet pills are intended for people who are overweight to the point of being considered obese . Therefore , they are known as anti - obesity drugs ; and should not be used for quick , temporary weight loss . Diet medications and supplements will not simply " melt " away all your unwanted fat and permanently solve any weight problem you might have . Most weight loss trials show that diet pills offer ( at best ) short term support . You should use diet pills in combination with a simple plan for weight loss through regular exercise and an improved diet .
According to the above context, choose the best option to answer the following question.
Question: Why is the narrator so down on diet pills ?
Options:
- They do n't believe they should be legal .
 - They do n't believe anything can make them lose weight .
 - None of the above choices .
 - They do n't believe they do what they claim .


They do n't believe they do what they claim .