At what point does a doubter of the official story become a 'conspiracy theorist'?

One effective way to lose weight is to eat fewer calories. One pound is equal to 3500 calories. In other words, you have to burn 3500 more calories than you take-in to lose one pound. Most adults need between 1200- 2800 calories/day-depending on body size & activity level to meet the body's energy needs.