Midterm 2 Flashcards
What is the disordered eating spectrum
- goes from healthy body image to disordered eating to eating disorder
What is involved in healthy body image of the disordered eating spectrum
- body acceptance
- healthy normal eating habits
- healthy weight for age, height and body type
What is involved in the disordered eating portion of the disordered eating spectrum
- restricting
- purging
- weight and shape preoccupation
- steroid use
- striving for perfection
- fasting
- yo-yo dieting
- laxative abuse
- compulsive over eating
- excessive exercise
What is involved in eating disorder
- anorexia nervosa
- bullimia nervosa
- binge eating disorder
What affects the development of eating disorder
-genetic, social, psychological
- family (history of dieting/eating orders), ( history of depression anxiety, alcohol dependence), ( history of obesity)
-individual (female gender, genetics, premature birth, perfectionism,early puberty)
-Possible triggers and maintaining factors
(Puberty, sociocultural pressures, family factors, comments about weight)
Risk factors for eating disorders
-biological
-psychological
-social
What is involved with the biological risk factors of eating disorders
- close relative with eating disorder or mental health condition, history of dieting, low energy availability. (Insufficient consumption, type 1 diabetes
Psychological factors
- perfectionism, cognitive inflexibility, impulsivity, body mage dissatisfaction, personal history of mental health condition or substance use disorder
Social risk factors for eating disorders
-weight stigma, teasing/bullying, limited social networks, personal experience of trauma, acculturation (those from another culture undergoing rapid westernization)
Clinical diagnosis of anorexia
- restriction of energy intake leading to significant low body weight
- intense fear of gaining weight
- disturbance in body weight
- restricting avoidant
Features of anorexia
- individuals with anorexia nervosa typically severely restrict their food intake and may exercise intensely
- some turn to self induced vomiting after eating (or misuse of laxatives, diuretics or enemas)
- family members and friends often report high levels of anxiety
- people with anorexia are often model students or ideal children but in their personal lives may experience low self esteem, social isolation and unhappiness
Physical consequences of anorexia
- anemia (low intake of iron, type of anemia)
- low bone density (because of restricted calories)
- depression
- amenorrhea, absence of menstruation
- impaired immune response
- sensitivity to cold, low insulation, low cold tolerance
- low blood pressure
- irregular slow heart rate, loss of muscle tissue
- soft, thick facial hair, thinning scalp hair due to deficiencies in vitamins and minerals
How common is anorexia
-approximately 1% of young women and less than 0.1% of young men have anorexia nervosa
- reported in girls as young as five and women through their forties
- begins during adolescence
- people at risk tend to be overly concerned about weight and food and many attempted weight loss/dieted early
Treatment of anorexia
- no treatment that cures anoxia nervosa quickly
- takes a good deal of time and professional help to treat (often years). Ongoing therapy is important for continued recovery
- treating the disorder difficult because few with anorexia believe their weight needs to be increased
Treatment program focus on
- normalizing eating and exercise behaviours
- nutritional health and body weight
- psychological counselling for self-esteem
- attitudes about body weight and shape
- antidepressant or other medications
- family therapy
Compete success in —-% (depending on the study) and partially successful in others
25%-50%
Clinical diagnosis of bulimia nervosa and characterized by what—-
- recurrent episodes of binge eating, an episode of binge eating is characterized by both eating within any 2 hour period and amount of food that is definitely larger than what most people would eat in a similar period of time under similar circumstances and a feeling that one cannot stop eating or control what or how much one is eating
Bulimia nervosa; recurrent inappropriate..
recurrent inappropriate compensatory behaviour to prevent weight gain such as self induced vomittng, misuse of laxatives, diuretics or other medications, fasting, or excessive exercise.
The binge eating and inappropriate compensatory behaviours both occur…
On average at least once a week for 3 months
(Bulimia nervosa) is unduly influenced by —- and ——-
Body shape and weight
Bulimia nervosa occurs in —-% of young women and ——% of young men
1-3% of young women and 0.5% of young men
Bulimia often starts with ——
Voluntary dieting to lose weight and at some point voluntary control over dieting is lost
Individuals with bulimia nervosa feel compelled to
Engage in binge eating and vomiting
The behaviours of bulimia become
Cyclic, food binges that are followed by guilt and or depression as well as purging and dieting
True or false once a food binge starts its hard to stop
True
Features of bulimia nervosa
- unlike those with anorexia nervosa people with bulimia usually are not underweight or emaciated
-tend to be normal weight or over weight - common among athletes
Treatment of bulimia
- nutrition and counselling to break feast/famine cycles
- eating regular meals
- psychological counselling to improve self esteem and attitudes towards body weight and shape
- antidepressants may be useful
Full recovery of women with bulimia is ——
Full recovery of women is higher than for anorexia
Most women with bulimia
Achieve partial recovery
What is the ratio of people that relapse to binging and purging within seven years
1/3
binge eating episodes associated with 3 or more of the following
- Eating much more rapidly than normal
- Eating until uncomfortably full
- Eating large amounts when not physically hungry
- Eating alone because of feeling embarrassed by how much one is eating
- Feeling disgusted with self, depressed or very guilty after overeating
How often should a binge eating episodes occur on average to be considered a binge eating disorder
At least once a week for 3 months
Individuals are likely to be ——— (binge eating disorder)
Overweight or obese
T or F people affected with binge eating disorder are 1/3 men
True
Binge eating disorder
- individuals eat several thousand calories worth of food during a solitary binge (within 2 hours),
- feel a lack of control over the binges and experience distress or depression after the binges occur
- people with binge eating disorder do not vomit use laxatives, exercise excessively in an attempt to control weight gain basically there is no compensatory behaviour
———% of people in weight control programs and ——% of individuals with obesity have binge eating disorder
9-30% and 30-90%
How much of the general population have a binge eating disorder
2-5%
What prompts binge episodes
- stress, depression, anger, anxiety and other negative emotions prompt episodes
Binge eating disorder may be related to
Genetic mutation that impairs normal eating behaviour
( MC4R gene mutation in 5% of individuals with the disorder)
Binge eating disorder treatment
- focuses on disordered eating and underlying psychological issues
- persons will be asked to record food intake and note feelings, circumstances and thoughts related to each eating event (this information identifies circumstances that prompt binge eating and alternative behaviors to prevent it “what triggers a binge”
Does pica come from the Latin word for magpie
YES
Pica
- unusual eating habits (eating things that aren’t food)
- clay or dirt (geophagia)
- ice cubes (pagophagia, case study of 10kg)
- charcoal,ash, paper, chalk,cloth, baby powder, coffee grounds and egg shells
What 2 populations are most affected by pica
- Children
- Pregnant women
Link between pagophagia and
iron deficiency anemia is a medical mystery but treating the deficiency reduces pagophagia
Eating disorder resources
- services delievered by health care, specializing and experiences
- primary care physician,dietician or nurse practitioner is a good start to the process
- reliable sources for help, support groups include but not exclusive to ahs, su wellness, eating disorders support of Alberta
Pica can result in nutritional deficiencies and intestinal blockages T or F
True
Simple sugars complex CHO and ——— are members of what family
Dietary fibre are members of the CHO family
Sugars and starchy complex CHO supply ———
Fewer than half the calories of fat
Tooth decay and poor quality diets are related to
High sugar intake
Fiber benefits health in a number of ways True or False
True
When in an ingredient list if enriched wheat flour is it actually whole wheat
No it is simply enriched white flour, need to indicate whole wheat or whole grain in order to be seen as whole wheat
Type of carbohydrates
- simple (absorbed quickly will cause an increase in blood glucose, insulin resistance and inflammation in body)
- complex
What are the 2 types of simple sugars
- Monosaccharides
- glucose (blood sugar or dextrose), fructose (fruit sugar), galactose
- most abundant and nutritionally relevant is glucose
- only monosaccharides are absorbed into bloodstream - Disaccharides
- two monosaccharides joined by a covalent bond
What is the health risk of simple sugars
- rapidly absorbed into blood stream, increased insulin resistance and inflammation
What are examples of disaccharides
- sucrose; cane sugar, beet sugar widely used as a natural sweetener (glucose + fructose)
- maltose; formed from the partial breakdown of starch and is often used in malt beverages ( beer= malted barley= formation of maltose, bacteria ferment the maltose and make alcohol)
Glucose + Glucose - lactose; milk sugar one of the only anima; sugars besides glucose (glucose + galactose)
Complex carbohydrates
- oligosaccharides ( 3 monosaccharide unit)
Short chains of monosaccharides joined by bonds that cannot be broken by human enzymes
They are a fiber source
Fructans and galacto-oligosaccharides
Garlic, onions, wheat, artichokes, beans, lentils, chickpeas and inulin (prebiotic)
3 primary nutritional polysaccharides
- Starch- energy storage in plants (digestible)
- Glycogen- energy storage in plants (digestible)
- Cellulose- provide structure in plants (non digestible)
Starch and glycogen are —- = ———
Digestible since they are glucose polymers bonded with a glycosidic bonds that can be broken down by enzymes
Cellulose is ——— = ——
Non- digestible because they are connected via beta glycosidic bonds that can not be broken down by human enzymes
Fibre is important to our health because of what happens to ——-
It in the colon
What happens in the colon
Bacterial enzymes can break down fibre to form short chain fatty acids and gas as a byproduct
Fibre feeds our gut microbiota (true or false)
True
Gut health impacts
Brain- known as the brain-gut axis poor gut health linked with anxiety, depression, autism and Parkinson’s disease
Intestinal disease- poor gut health associated wth inflammatory bowel disease, crohns, ulcerative colitis and IBS
Metabolism- known as the microbiota-liver axis associated with obesity, type 2 diabetes and fatty liver disease
Pathogens- overgrowth of bacteria can cause infections like Clostridium difficile leading to diarrhea
High fibre whole natural foods related to gut microbiota
- promote microbiota symbiosis
- consists of fruits, vegetables, grains and food high in fiber
- leads to improved gut health and prevents chronic diseases
Processed foods and low fibre related o gut microbiota
- promotes microbiota dysbiosis (unhealthy gut balance)
- sugary, fatty, processed foods dominate this diet
- this increases the risk of chronic diseases like obesity, diabetes and heart disease
Can processed foods actually be good for us and what about ultraprocessed
Yes processed food like whole grain pasta with only a few ingredients is healthy for us but something like ultra processed food like sugary cereal that has been significantly changed from its original state with salt, sugars farm additives, preservatives and or artificial colours are added are unhealthy
In a grain of wheat the outer bran layer is a rich source of dietary fiber true or false
True
The germ contains ————
Protein, unsaturated fats, thiamin, niacin, riboflavin, iron and other nutrients
What is removed when making white flour and in what process
Bran and germ, the refining process
The endosperm contains ——- which is the energy—— of glucose in plants is this white flour
Starch, storage form of glucose in plants
This is white flour
Soluble fiber is good because —- and it slows down —-thereby lowering —- and reduces ——
It benefits health in several ways
Slows down glucose absorption thereby lowering peak blood levels of glucose and reduces fat and cholesterol absorption
Soluble fibre found in
Oats (beta glucan), barley, fruit pulp, peas, beans citrus, psyllium,
Does soluble fibre have lower calories than digestible carbohydrates
Yes
What are the health benefits of insoluble fibre
- moves bulk through gut controls gut PH, removes toxic waste and prevents constipation
What are examples of insoluble fiber
- fond in vegetables, wheat bran, whole grains, flax seed, popcorn, corn bran, seeds, nuts and apple peel
Macronutrient effects on blood glucose
- Blood glucose rises when you eat
- High blood glucose stimulates pancreas to release insulin
- Insulin stimulates uptake of glucose into cells and storage as glycogen in liver and muscle, it helps convert excess glucose into fat stores
- As body cells use glucose, blood levels decline
- Low blood glucose stimulates pancreas to release glucagon
- Glucagon stimulates liver cells to break down glycogen and release glucose into blood
- Blood glucose begins to rise
major sources of simple sugars in most diets are added during processing of food aka
Added sugars
( relating to sugars) labels contain —-
Information on total sugars per serving but do not distinguish between naturally occurring and added sugars yet
True or false added sugars add calories without adding nutrients ( fructose, sugars, dextrose)
True
What are examples of sugars % daily value for common food item
Less than 15% daily value of sugars include milk, plain yogurt, canned fruit in water, unsweetened frozen fruit, unsweetened oat cereal compared to over 15% daily value like chocolate milk, flavoured yogurt canned fruit in syrup, frosted oat cereal
Within nutritional labels do they group together the sugars
Yes
What is the bad side of sugar
- tooth decay
- empty calories (calories without nutrients)
- often mixed with fats, limit sweet and sticky foods, replace them with vegetables and fruits , overall quality of diet decreased when sugar intake increases
Non nutritive sweeteners
Zero or low calorie sweetener that are either artificially synthesized or naturally derived
Anything with the claim of reduced sugar foods contains
Contains artificial sweeteners
Sugar intake recommendations
- no more than 100 calories per day (about 6 teaspoons or 24 grams) for women
- no more than 150 calories per day ( about 9 teaspoons or 36 grams) for men
- for children ages 2-18 less than 24 grams per day and sugary beverages limited to no more than 8 ounces a week
No more than —% total calories per day from added sugars and ideally less than -% for an average 2000 calories —% is about —grams or — teaspoons of added sugars)
10%
5%
10%
48
12
One can of soft drink has how many teaspoons of sugar
10
Is their a correlation between obesity and artificial sweeteners
Yes
When saccharine, sucralose and aspartame was given to mice
- mice with the artificial sweeteners affected their microbiota causing a poor glucose response when transplanting the microbiota of the affected mouse caused a increase in glucose intolerance
- note that this happened to the responders of artificial sweeteners not nonresponders
Those who received saccharine and sucralose had an elevated blood glucose true or false
True
When a mom consuming artificial sweeteners during pregnancy —
Affect the microbiota of baby
Alcohol sugars (3 kinds)
- xylitol
- mannitol
- sorbitol
What are alcohol sugars used in
Chewing gum, other candies and foods can be used to mask the unpleasant aftertaste of some artificial sweeteners
Are alcohol sugars absorbed in the gut
Not really large amounts can cause diarrhea
Stevia
Herbal alternative, GRAS, initial studies reported that crude whole leave extract of stevia results in reproductive, renal and cardiovascular toxicity but purified stevia side show no toxic effects
In 2012 health Canada approved its use
Aspartame
- A dipeptide (aspartic acid and phenylalanine)
- Digestion released methanol (10%) aspartic acid (40%) and phenylalanine (50%)
- Methanol converted to formaldehyde and then formic acid
- 200 times sweetener than sucrose (sugar)
- products containing it bear a “contains phenylalanine” label for people with PKU (phenylketonuria)
- nutrasweet and equal
- acceptable daily intake 40 mg/kg BW
- not compatible with high temperatures
Sucralose
- made from sugar= chlorinated sugar
- 600x sweeter than sugar
- safe when heated
- Splenda
Acesulfame K
- often used in combination with artificial sweeteners
- stable at high temperatures
Saccharine
- discovered in 1879 by accident by chemist working on coal tar derivatives
- 300x sweeter than sucrose
- banned I Canada in 1977 due to bladder cancer fears, returned to market once it was discovered the mechanism by which it caused cancer in rats is not present in humans
WHO suggest that non sugar sweeteners ——
- Not be used as a means to achieve weight control or reduce the risk of noncommunicable diseases, with the exception of people with diabetes so children, adults, pregnant etc.
- not a homogenous class of compounds each has a unique chemical structure
Mechanism of tooth decay
- sugar is sole food for bacteria -> produce acid
- bacteria form is sticky white plaque
- acid is produces by bacteria for 20 min after sugar is eaten
Promoters of tooth decay
- increased frequency of sticky foods
- acidic beverages
- excessive cleaning/polishing of tooth
- nursing bottle syndrome
Protective foods
- cheese (increase pH of plaque- decrease acidity)
- protein (either calcium i strengthens enamel)
- low calorie sweeteners (sorbitol, mannitol and xylitol all stimulate saliva)
What does fluoride and dental health do in aid of preventing tooth decay
- promote remineralization of eroded enamel
- water, toothpastes,dental rinses
- excess leads to fluorosis or mottled enamel during tooth development
- cosmetic condition that can only form in children under 8 years when permanent teeth are developing
Diabetes is related to
abnormal utilization of glucose by the body
What are the three main forms of diabetes are
- Type 1
- Type 2
- gestational diabetes
Rates of type 2 diabetes ——
Increase as obesity does
Weight loss and physical activity can
Prevent or delay the onset of type 2 diabetes in many people
Gestational diabetes
Only during pregnancy
Type 1 diabetes
- typically diagnosed before 40, abruptly
- treatment is with insulin, diet and exercise
Type 2 diabetes
- lifestyle related
- treatment is weight reduction and medications
Poorly controlled, untreated diabetes produces
- blurred vision
- frequent urination
- weight loss
- increased susceptibility to infection n
- slow healing sores
- extreme hunger and thirst
Long term, poorly controlled diabetes may cause
- heart disease and stroke
- kidney damage (nephropathy)
- blindness (retinopathy)
- nerve damage (neuropathy)
- loss of limbs due to poor circulation
- Alzheimer’s disease
Gestational diabetes
- resistance to insulin that develops during pregnancy
- 5-6% of women develop gestational diabetes
- certain people have greater risk including women over 35 years, women with obesity and women from a high risk group (African, Arab, Asian, Hispanic, Indigenous or South Asian)
- control blood glucose levels with an individualized diet and exercise plan
Gestational Diabetes leads to high blood glucose levels in mother lead to extra glucose to baby, baby gains extra weight known as
Macrosomia (large baby more than 4kg)
infants of women with diabetes may have increased
body fat at birth and have blood glucose problems after delivery
- such as a reader risk for diabetes later in life
- 6-20% will have a physical abnormality that may threaten survival or a high quality of life ( exp, heart defects, cleft palate or club foot)
True or false some women require daily insulin injections for blood glucose control for pregnant women
True
Gestational diabetes disappears after delivery but type 2 diabetes may appear later in life in the mom TRUE or FALSE
true
Exercise, maintenance if normal weight and a healthy diet reduce the risk the diabetes will return true or false
True
Type 1 diabetes
Deficiency of insulin, autoimmune disease that destroys pancreatic beta cells that produce insulin
Type 1 diabetes accounts
Accounts for about 5-10% of all diabetes and is increasing yearly
Diagnosis of type 1 peaks around what ages and usually occurs before
11-12 and usually occurs before 40
Breastfeeding for —-
The first 4 months may protect infants against type 1 diabetes
Environmental factors play a
Role in triggering type 1 diabetes, candidates have included early exposure to cow milk proteins, vitamin D deficiency, early exposure to gluten, certain viruses (rubella, rotavirus, gut microbiota)
Managing type 1 diabetes
- insulin (injections, pump,Islet transplant)
- diet
- exercise
Glycemic index
- foods that elevate blood glucose require more insulin to move glucose into cells
- foods that affect blood glucose are given a glycemic index value
(Blood glucose elevation caused by 50 grams of a food, compared to the elevation caused by eating 50 grams of glucose) - low glycemic index foods decrease blood triglyceride levels and insulin requirements in type 2 diabetes
Potato and glucose have a high GI true or false
True
What has the highest GI
French bread at 95 which is almost equivalent to pure glucose 100
What is Rice Krispies GI
82
Al bran glycemic index
42
What is sticky rice GI
86
Yogurts GI
31
Milks GI
25
Hummus GI
6
Elevated fasting blood glucose levels before the cut off point used to diagnose type 2 diabetes is and a sign of what
6.1-6.9
Prediabetes
Prediabetes is a
Major risk factor for type 2 diabetes
What are the common risk factors for insulin resistance
- Obesity
- Low levels of PA
- Genetics
When blood glucose levels become high ——-
The pancreas secretes more insulin to keep glucose levels under control
Pancreas becomes exhausted from over work and
And insulin production slows or stops
When fasting blood glucose levels reach ——— type 2 diabetes is developed
7 mol/l or higher type 2 diabetes has developed
Type 2 diabetes occurs in and is most common in it also has a
- Individuals with over weight or obese and a sedentary lifestyle
- most common in people over 40 but increasingly seen in young children and obesity
- strong genetic component
Type 2 diabetes runs in
- run in families (black, Hispanic, indigenous and Asian)
- associated with apple obesity
- individuals with type 2 diabetes are insulin resistant
- type 2 diabetes can be managed with diet and exercise most of the time
- if not there are 8 different classes of diabetes medications that can be prescribed to manage diabetes