Curr Opin Lipidol 13, 3—9. Australas Epidemiol 17, 35— National Health and Medical Research Council. Obes Rev 13, —
Photo by Providence Doucet on unsplash. The hypothalamus in the brain is the main control point of appetite. It receives hormonal and neural signals, which determine if you feel hungry or full. Hunger is an unpleasant sensation of feeling empty that is communicated to the brain by both mechanical and chemical signals from the periphery.
Conversely, satiety is the sensation of feeling full and it also is determined by mechanical and chemical signals relayed from the periphery. The hypothalamus contains distinct centers of neural circuits that regulate hunger and satiety Figure 8. The hypothalamus contains distinct centers of neural circuits that regulate hunger and satiety.
This results in the conscious feeling of the need to eat. Alternatively, after you eat a meal the stomach stretches and sends a neural signal to the brain stimulating the sensation of satiety and relaying the message to stop eating. The stomach also sends out certain hormones when it is full and others when it is empty.
These hormones communicate to the hypothalamus and other areas of the brain either to stop eating or to find some food. Fat tissue also plays a role in regulating food intake.
Fat tissue produces the hormone leptin, which communicates to the satiety center in the hypothalamus that the body is in positive energy balance. Alas, this is not the case. In several clinical trials it was found that people who are overweight or obese are actually resistant to the hormone, meaning their brain does not respond as well to it.
Nutrients themselves also play a role in influencing food intake. The hypothalamus senses nutrient levels in the blood. When they are low the hunger center is stimulated, and when they are high the satiety center is stimulated. Furthermore, cravings for salty and sweet foods have an underlying physiological basis.
Both undernutrition and overnutrition affect hormone levels and the neural circuitry controlling appetite, which makes losing or gaining weight a substantial physiological hurdle.
Genetic Influences Genetics certainly play a role in body fatness and weight and also affects food intake. Children who have been adopted typically are similar in weight and body fatness to their biological parents.
Moreover, identical twins are twice as likely to be of similar weights as compared to fraternal twins.
The scientific search for obesity genes is ongoing and a few have been identified, such as the gene that encodes for leptin.These associations suggest that, similar to the case with adults who under-report, the characteristics of overweight, concern about overweight, and tendencies toward dietary restraint during childhood may work in concert to drive the selective reporting seen in girls who under-report energy intake.
however this was not necessarily the case across all races or nationalities (Marathe, Pan, & Apolloni, ). The relationship between social influence, dietary intake patterns and weight status requires additional exploration.
Video: Factors that Influence Dietary Choices: Gender, Culture & Other Issues You are a unique person and therefore, the dietary choices you make should be well-suited to who you are and what you do.
Understanding the determinants, factors, and processes that comprise a sustainable diet will become increasingly important in an era of economic growth, rising incomes, climate change, and dietary .
Case Study 1: Examining Influences on Diet Among Population Subgroups. Case Study 2: Examining Diet Quality and Markers of Disease Case Studies.
parenting, and other potential influences on dietary intake among children and the family as a whole. Considerations. P3 Explain Possible Influences on Dietary Intake Essay examples.
Words Jul 10th D1 In this assignment I will be choosing and describing a service user for my case study and I’m going to explain how some factors such as medical disorders, life style and many more may have influenced their dietary intake.
The consultant diagnosed.