Based on the context and the answer, generate a question. 

Context: 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 .

Answer:

They do n't believe people know what they actually do .



Why is the narrator so down on diet pills ?