Assessment of Popular Diets Flashcards
ketogenic diet classic ratio
4:1 (CHO and pro)
rational for keto diet
low carb= low insulin= burins fat instead of glucose
suppression of appetite
keto diet should not incude
grains, fruits, starchy veg, added sugars
why does keto or High fat diet result in more rapid weight loss?
depletion of glycogen ( with water) - water weight rapid at first but relain later
- clinically meaningless significance bt this and low fat diet net results
what causes suppression of appetite in keto
high production of ketone acids
serum glucose reduction in high carb reduction diets?
yes, bc reducing energy
plasma FFA is higher in?
high fat - still in energy deficit - still undergoing fat oxidation
most recent RCT (n=609) compare keto vs low -fat found?
- 7 kg difference in weight loss ( not statistically different)
- no effect of genotype, no effect of baseline insulin secretion
- unpredictable individual variation
Dr. Ornish diet
low fat, high carb diet
principle of Dr. Cornish diet
not all kcal created equally
- low fat/ high fiber meals promotes fullness
- promises to increase metabolism
- no knowledge on healthy fats
problems with Cornish diet
fat sol vitamins
high in sugar
may gain weight ( 1800 kcal)
absolutely inadvisable to follow VLCD
pregnant
major system failure
malignant aarrhythmias
unstable angina ( chest pain, less blow to heart)
