Be able to describe the three hunger factors and how weight is regulated.
Biological Hunger Factors: Comes from physiological changes in blood and chemistry and signals from digestive organs that provide feedback to the brain, which, in turn, triggers us to eat or stop eating.
Psychosocial: Come from learned associations between food and other stimuli, such as snacking while watching television; sociocultural influences, such as pressures to be thin; and various personality problems, such as depression, dislike or body image, or low self-esteem
Genetic: come from inherited instructions found in our genes. These instructions determine the number of fat cells or metabolic rates of burning off body's fuel, which push us toward being normal, overweight, or underweight.
Weight-regulating genes play a role in influencing appetite, body metabolism, and secretion of hormones (leptin) that regulate fat stores.