Chapter 11: Part 6 Flashcards
what BMI is considered overweight?
BMI over 25
what BMI is considered obese?
BMI over 30
what is a cause of obesity?
inexpensive, convenient, good-tasting fast food is readily available. High-fructose corn syrup may contribute to obesity also. Fructose, unlike glucose, does not stimulate insulin secretion.
- A second possible reason is that people are not as active. Most jobs today do not require a high level of physical activity and so we therefore, we do not need as much food as we once did.
- There is also a genetic reason. Heredity appears to affect people’s metabolic efficiency (how much weight people gain or lose when they are placed on a high- or low-calorie diet.
what is the treatment of obesity?
bariatric surgery, consuming less calories, exercise, drug treatment
what is the most effective form for bariatric surgery?
gastric bypass
what is gastric bypass?
when a smaller stomach is formed
what kind of issues can bariatric surgery cause?
iron or vitamin B12 deficiency
why is gastric bypass so effective?
disrupts the production of ghrelin
what can drug treatment do for obesity?
Drugs could reduce the amount of food someone eats, it could prevent certain foods from being digested, and they could increase their metabolic rate.
what percentage of those with anorexia die from the disorder?
5-10%
is OCD a link to anorexia?
nope, it is an effect
what about treatment for anorexia?
CBT but it has a success rate of 50% and relapse is 22% during a one-year period
what are anorexia and bulimia symptoms of?
the symptoms of eating disorders are actually symptoms of starvation
studies with animals suggest that
increased activity may actually be a result of fasting
why would rats do this during semistarvation?
innate tendency to seek food when it is scarce, but can’t in their cage so they run a lot on the wheel
what does NPY in the blood do?
it stimulates eating but stimulates activity in mice instead when they are starved
what begins the behavior of anorexia?
they do not know, maybe a genetic predisposition
in what is anorexia found more in?
girls who were born prematurely or sustained birth trauma
what aids treatment of bulimia?
serotonin agonists, such as fluoxetine, does not help patients of anorexia
what does adipose tissue secrete?
leptin
