SUMMARY: This small study looked at 19 people on either a low-carbohydrate diet or low-fat diet. The aim of the study was to see which diet reduced more body fat. The results showed that low-fat diets worked better than low-carbohydrate diets. The diets all contained the same amount of calories. Also, the low-fat diet had the same amount of sugar as a regular (baseline) diet.
LESSON COMMENT: This is a good article to read along with (Effect of low-fat diet interventions) because these are two very different studies with different results. One is a review of many studies and the other is an experiment on a small group of people. Based on the results, companies can pick and choose the studies that support their diet claims and accurately say that their theory is “backed by science”. I think many discussions in both science and social studies/history class can start with these two seemingly contradicting studies. How many times in the past have people used scientific evidence as a way to justify their own cause?
Hall, K. D., Bemis, T., Brychta, R., Chen, K. Y., Courville, A., Crayner, E. J., Goodwin, S., Guo, J., Howard, L., Knuth, N. D., Miller, B. V., Prado, C. M., Siervo, M., Skarulis, M. C., Walter, M., Walter, P. J., … Yannai, L. (2015). Calorie for Calorie, Dietary Fat Restriction Results in More Body Fat Loss than Carbohydrate Restriction in People with Obesity. Cell metabolism, 22(3), 427-36.