Hypothalamus Case Study

Good Essays
The Role of the Hypothalamus in the Control of Appetite in relation to obesity.
Introduction
Appetite is the desire for a body’s needs to be fulfilled, in this case appetite is used in the sense of “the desire to eat food”. Humans need to manage the intake of food so mechanisms such as metabolism which occurs during cell respiration, can run efficiently meaning no energy is wasted, nor is too much saved. The effect of having a high appetite can have a tremendous effect on a person’s body weight and health. Especially if the person is motivated to eat more than the recommended food intake, or foods categorised as unhealthy (for example food products with high fat and salt content). Generally, this kind of diet plus a poor active lifestyle is
…show more content…
The hypothalamic nucleus is located proximal to the blood brain barrier with little insulation allowing peripheral signals to enter the ACR directly form the blood stream. The two neuronal populations within the ACR contribute to appetite in different ways. One set of neurons co-express neuropeptide Y (NPY) and agouti related peptide (AgRP), they are the stimulants that increase food consumption. In comparison to the other neurons that have an opposite effect. The projection of these signals communicate throughout the hypothalamus to areas such as the LHA due to the plethora of AgRP immunoreactive terminals that it has. These terminals make contact with melanin concentrating hormones and orexin-expressing terminals. Thus signalling that energy stores are low and appetite should …show more content…
More desirable foods act as natural stimulates that increase the quantity of food a person would eat, foods that generally are high in saturated fats and salt. The signal response from eating the food stimulates the mesolimbic dopamine pathway. The theory suggests that foods that are more desirable, cause stimulation from senses such as smell and sight which cause orexin neurons to activate and release dopamine into the preoptic area of the hypothalamus (POA), the nucleus accumbens (NAc). It does not appear to be the taste receptors are the factors that stimulate this, the uncertainty of this comes from laboratory experiments involving rats. The rats though lacking sweet receptors still developed a strong preference for solutions of sucrose. This is then said to increase psychomotor initiation and conditioned learning through food associated

Related Documents

  • Decent Essays

    We should be more aware of what we’re eating and how much we’re consuming. Processed foods are not cheaper than whole foods; they are made to produce a large amount of income with health issues if not eaten correctly. In a long run if society is not caring for our health who will do…

    • 1199 Words
    • 5 Pages
    Decent Essays
  • Decent Essays

    The brain has a powerful role in the need to eat and feel full, and there are several theories that suggest that defects, rather than just a lack of will power, in the system that controls how a person feels before, during and after eating may have a major role in some cases of obesity. Why obesity is so important to people who are not obese is due to the impact on society especially medical resources. Of course, there is the impact on individual’s health, but also the added stress…

    • 1794 Words
    • 8 Pages
    Decent Essays
  • Decent Essays

    "Mood, food, and obesity." Frontiers in psychology 5 (2014): 925. [/ref]When dopamine is too low, you may not want to eat (only to binge eat later) and when too high, it may leave you with a dopamine hangover (again you reach out for more food). See the vicious cycle of overeating? Serotonin is another neurotransmitter which is responsible for your happy feeling.…

    • 940 Words
    • 4 Pages
    Decent Essays
  • Decent Essays

    Causes Of Eating Disorders

    • 1985 Words
    • 8 Pages

    Eating disorders are defined as a unhealthy relationship with food that may negatively affect a person 's physical and mental health. People with eating disorders most commonly focus too much on their weight, body shape, and food they are eating. They focus on their weight so they do not become obese. The focus of the body shape is so they feel more confident with themselves and feel more attractive. When they say the focus on food intake, they are referring to the amount of food, the calories, and the fats in the foods that may increase their weight.…

    • 1985 Words
    • 8 Pages
    Decent Essays
  • Decent Essays

    Diet Analysis Sample

    • 1699 Words
    • 7 Pages

    Studies have shown that the gut microbes of an obese person are significantly different from those of a normal healthy person. In short, the types of foods consumed impact your gut microbes and basically ties in with the healthy eating patterns of consuming a variety of nutrient dense food sources and limiting intake of sodium, saturated fats and added sugars. My conclusion is that the healthy eating patterns are the key to getting on track with your nutritional goals and staying healthy. In my opinion, a variety of macronutrients (carbs, lipids and proteins) that are nutrient dense (loaded with micronutrients) and consumed in moderation with an addition…

    • 1699 Words
    • 7 Pages
    Decent Essays
  • Decent Essays

    The term diet is often understood as a temporary change in calories and intake in order to lose weight. A lot of emphasis has been placed on the quantities of carbs and calories, despite how people actually feel about these notions. Certainly, the word carbohydrate has taken on a negative connotation despite the fact that carbs are the body’s main source of energy and are a major component in calories in most healthy based foods. The key to such a solution is providing the public with unbiased and accurate information regarding diet. There is an expression, “calories are calories”.…

    • 1048 Words
    • 5 Pages
    Decent Essays
  • Decent Essays

    They also take longer to digest. On the other hand, foods that are high in carbohydrates can stimulate appetite. The ketones develop when the body begins to break down fat instead of sugar. This is a process known as ketosis. Studies have shown that ketosis can help suppress ghrelin.…

    • 701 Words
    • 3 Pages
    Decent Essays
  • Decent Essays

    Another way is to start by limiting their intake of food that can be harmful to the body. Foods that are high in sugar, fat, and in sodium. The more the variety of nutrient dense food and drinks within the basic food groups the more likely we are to get all the essential nutrients we need. You may be asking “what are essential nutrients?” Well…

    • 1950 Words
    • 8 Pages
    Decent Essays
  • Decent Essays

    The study above suggests that eating unhealthy does actually matters in gaining extra pounds which might lead to being obese or overweight. Therefore, it can be argued that food manipulative advertisement does exist and works better on adolescent as they still are under learning process. Furthermore, food manipulative advertisement among adolescents leads to being obese. This gradually leads to many severe health consequences as these foods are full of calories and little nutrition. The health risk factor includes blood sugar spike, high blood pressure and many more.…

    • 1332 Words
    • 6 Pages
    Decent Essays
  • Decent Essays

    Foods high in calories and low in nutrients, such as extremely sugary or salty foods, are the biggest factor in an unhealthy diet. Although healthy eating habits do not cure the mental illness, it can often increase people to feel better. It is important to realize what is being put into our bodies and what we can do to better ourselves. Maintaining a healthy diet is crucial for not…

    • 1240 Words
    • 5 Pages
    Decent Essays