Hey there! Dr. Alan Christianson back with you here. I want to talk a little bit more about hungry hormones and how they tie into a really cool study I read a while back. Many have argued it does not matter how much you eat or when you eat it – it only matters how many calories you consume. There was a really neat study that took that question and examined it pretty thoroughly.
In this study, they took policemen and policewomen who were all medically obese. This means a body mass index of greater than thirty, which is a function of height and weight. None of these officers had done a weight-loss diet in the last few months and were relatively stable in their weight. These seventy-eight officers ranged in age from twenty-five to fifty and were all reasonably healthy with no health restrictions. A few randomly dropped out of the study, but there was no pattern where one group had more drop out than the other. The study lasted for six months, and the officers were checked at many points. They were put into two groups, were on identical diets, but one group had specific timing of when their food was eaten. The amount of food was pretty well-regulated between 1300 and 1500 calories. This is a common amount for a weight-loss regime, especially for women, but a little lower then you commonly see for men. The diets were also regulated as to how much protein, fat and carbs were eaten. They were given about 20% protein, about a third fat and the remainder, roughly half, in carbs. Within the two groups, the big difference was when the carbs were allowed to be eaten.