Evolutionary medicine
Many people eat types of food that are much different than what we ate a long time ago. A long time ago we ate things that grew from the ground and animals from the land or sea. Today there are more options to eat. Some options we have are foods that are made in factories, which have a lot of sugar, salt, and fat. These sugars, salts, and fats, coming from factory foods are not good for people to eat, and can lead to sickness.<ref></span>Eaton SB, Strassman BI, Nesse RM, Neel JV, Ewald PW, Williams GC, Weder AB, Eaton SB, Lindeberg S, Konner MJ, Mysterud I, Cordain L (February 2002). "Evolutionary health promotion" (PDF). Preventive Medicine. 34 (2): 109–18. doi:10.1006/pmed.2001.0876. PMID 11817903. Archived from the original (PDF) on 2008-12-17. Retrieved 2008-08-21.</ref><ref></span>Eaton SB (February 2006). "The ancestral human diet: what was it and should it be a paradigm for contemporary nutrition?". The Proceedings of the Nutrition Society. 65 (1): 1–6. doi:10.1079/PNS2005471. PMID 16441938.</ref><ref></span>Milton K (September 2003). "Micronutrient intakes of wild primates: are humans different?" (PDF). Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology. 136 (1): 47–59. doi:10.1016/S1095-6433(03)00084-9. PMID 14527629.</ref> Some examples of sickness that can come from food are dental caries, obesity, and diabetes.