Medical Nutrition Lecture 1 and 2 Flashcards
5/31/19 and 6/4/19
Nourished
Adequate calories and nutrients
Under nourished
Not enough calories and nutrients
Malnourished
Quality of food is poor regardless of quantity
Overnourished
Consumption of too much food
Essential nutrient and examples
Must be obtained externally because the body cannot produce it, water, carb, protein, lipids, vitamins, minerals
Ghrelin
Hormone released by the stomach upon lack of distension to stimulate appetite in the hypothalamus
Leptin
Hormone released by adipose tissues upon filling to decrease appetite in the hypothalamus, increase glucose uptake in muscle, decrease gluconeogenesis by liver
Insulin
Hormone released by pancreas that acts on the hypothalamus
Hormones hypothalamus releases in response to stimulate or supress metabolism at the brainstem
Proopriomelatocortin to MSH (catabolic)
Neuropeptide Y for anabolism
How much water do we need and why?
50% of weight in floz, Universal solvent, transport medium, heat regulation, lubrication
RDA’s
Recommended daily allowance, levels of intake of essential nutrients considered to be the general basis to meet the requirements of almost all healthy people
AI
Adequate intake, uh
UL
Upper Level, uh
EAR
Estimated average requirement, uh
1 lb of body weight =
3500 Calories
definition of a calorie
Energy required to raise one gram of water one degree celcius
Breakdown of calories daily
50% carbs
30% fats
20% protein
All carbohydrates break down into…
…Glucose (except cellulose/fibers that cannot be digested)
Many excess carbohydrates are stored as…
…triglycerides
Vegetables tend to lack…
…complete protein
Products of fat
Prostoglandins, thromboxanes, prostacyclins, leukotrienes
Fat soluble vitamins
A,D,E,K