Principles of Anatomy and Physiology

    Explain Nutrition: Body Weight and Energy Balance and describe what learning techniques you used to master the material.

    Nutrition: Body Weight and Energy Balance
    Research suggests that all animals have a metabolic set point that determines how much energy we need in a day. This is determined by a number of factors, including genes and lifestyle. Studies from behavioral genetics suggest that 30 to 50 percent of the variability in weight is due to genetics. In terms of lifestyle, the level of activity influences how metabolically active our cells are. Body weight will remain stable so long as the calories consumed are equivalent to the calories expended. In the short term, the body will cope with too many or too few calories by changing the metabolic set point, so overeating during the holidays is not a problem, but, in the longer term, these set points can get adjusted to new levels based on changes in lifestyle or diet.

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