QUESTIONS AND ANSWERS
BMI < 25 kg/m - ANS No weight loss needed
BMI > 30 kg/m - ANS weight loss recommended
Losing 5% to 15% of body weight - ANS significantly reduces health risks associated with
being overweight or obese
Weight loss should be gradual - ANS 1/2 to 2 lbs/week; equates to 500 calories reduction per
day
Severe calorie restriction - ANS leads to lower BMR and lead to loss of body proteins and
water
If you lose weight rapidly - ANS you're more likely to regain weight
Yo-yo dieting or weight cycling - ANS repeated cycle of weight loss & weight gain
Decreasing energy intakes - ANS -choose nutrient dense foods
-multivitamins/mineral supplements recommended with intakes less than 1200 calories/day
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-intakes less than 800 calories should be done under medical supervision
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, 2010 dietary guidelines for Americans recommendation on physical activity - ANS 150
minutes of moderate intensity aerobic activity per week *some may need to do more minutes
per week
behavior modification - ANS a process that is used to gradually and permanently change
habitual behaviors
ABCS of behavior modification - ANS a. identify antecedents
b. recognize the behavior
c. see the consequences
c. modify the behavior
d. enjoy the new consequence
Anorexia Nervosa - ANS eating disorder characterized by self-starvation, a distorted body
image, and abnormally low body weight
Bulimia Nervosa - ANS eating disorder characterized by consumption of a large amount of
food at one time (binge eating) followed by purging behavior
appetite - ANS desire to consume specific foods triggered by EXTERNAL cues INDEPENDANT
of hunger
-stimulated by sight, smell, taste of food stimulates endorphins ("brains" pleasure chemicals)
hunger - ANS desire to consume food that is triggered by INTERNAL physiological signals such
as empty GI tract, low nutrient levels in bloodstream, hormones, etc. Usually sets in 4-6 hours
Total energy expenditure - ANS total amount of energy used in the body each day
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*it consists of three components
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, -basal metabolism
-energy needed for physical activity
-energy needed to "process" the food
basal metabolism - ANS energy expended to maintain an awake, resting body that is NOT
digesting food
-includes all essential metabolic reactions and life sustaining functions to keep you
alive/breathing etc
***Does NOT include digestion and absorption of food
60%-75% of total energy expenditure - ANS Basal Metabolism
basal metabolic rate (BMR) - ANS energy expended for basal metabolism
thyroxine - ANS a hormone excreted by the thyroid gland; directly controls basalmetabolism
More thyroxine secreted - ANS higher BMR
less thyroxine secreted - ANS lower BMR
BMR is lowest during - ANS Sleep
Minerals needed to make thyroxine - ANS Iodine
Iodine deficiency in the body - ANS -thyroid gland can become enlarged in attempt to trap
any that is circulating
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