WebOct 7, 2011 · One recent hypothesis has also suggested that the increase in relative brain size during the course of human evolution might be better explained by the metabolic resources available to mothers during gestation and lactation rather than by any specific behavioral feature (for example feeding ecology or complexity of social organization) that ... Humans evolved to live as simple hunter-gatherers in small tribal bands, while contemporary humans have a more complex life. This change may make present-day humans susceptible to lifestyle diseases. In contrast to the diet of early hunter-gatherers, the modern Western diet often contains high quantities of fat, salt, and simple carbohydrates, such as refine…

Leslie C. Aiello - Wikipedia

Web1. expensive. Never stops using calories Where does the energy come from to run a bigger brain? hypothesis 1. big-brained species have higher metabolic rate Result: No! Human resting metabolic rate is the same as other primates hypothesis 2. expensive-tissue hypothesis: energetic tradeoff with other expensive tissues like the gut WebApr 1, 1995 · Research relating to and discusses the potential influence of gut microbiota on the Expensive-Tissue Hypothesis, which states that the metabolic requirement of relatively large brains is offset by a corresponding reduction of the other tissues, such as gut size. 14 Highly Influenced PDF View 10 excerpts, cites background boiled egg in french

Expensive Tissue Hypothesis - 1651 Words Cram

WebThe “ expensive tissue hypothesis ” proposes that maintaining a brain is metabolically expensive and that, in order to meet the energy requirements of a larger brain, our digestive system became smaller and shorter, making it more suited for higher-quality, nutrient-dense food such as meat (Aiello and Wheeler 1995). WebThe “ expensive tissue hypothesis ” proposes that maintaining a brain is metabolically expensive and that, in order to meet the energy requirements of a larger brain, our digestive system became smaller and shorter, making it more suited for higher-quality, nutrient-dense food such as meat (Aiello and Wheeler 1995). WebIn collaboration with Peter Wheeler, she developed the expensive tissue hypothesis, regarding early humans, according to which there is an inverse correlation between the increase in brain size during human evolution and the parallel reduction of the digestive tract as a result of richer protein animal foods. Another idea she posited was that ... boiled egg lunch ideas for weight loss