Ted Naiman 4: METABOLIC FLEXIBILITY cut down by excess carbs & glucose
Breckenridge, 2017
Metabolic flexibility:
ability to drop your RQ
(respiratory quotient)
if you are eating more fat
If thin & healthy:
-eat fat…
-will drop RQ
-burn more fat
Metabolic flexibility:
ability to drop your RQ
(respiratory quotient)
if you are eating more fat
If thin & healthy:
-if fasting…
-RQ goes down
If poor
metabolic flexiblity…
-eat higher fat:
-store fat
-if fasting
-struggle!
If on a mixed diet…
-eat a bunch of carbs:
-immediately raise
your RQ
glucose completely
controls:
-metabolism
-substrate oxidation
If on a mixed diet…
-eat a lot of fat:
(stick of butter on top)
-not drop RQ
-will store all that butter
“Excess carbs results in:
-carb oxidation
-lower fat oxidation
-increased RQ
“Excess fat results in:
-enhanced fat storage
“That’s because
glucose, not fat,
controls oxidation”
Only have tiny, little
carb/glucose reservoir!
Can only have glucose:
-5g in bloodstream
-200g in liver & muscle
when dump in carbs
& glucose…
MUST burn more glucose
(and NOT bodyfat)
Eat enough carbs & fat:
-HAVE to switch metabolism over
and burn more glucose to get rid of it
-then it converts to fat, via de novo lipogenesis…
-to store it as body fat!
If you’re good at burning fat:
-epigenetic changes that…
-upregulate your
fat-burning pathways
-will stay good at burning
fat for a period of time
If you’re a glucose burner…
-epigenetic changes
upregulate your
glucose burning:
-you stay good at that
Insulin resistance is:
-impaired ability
~of muscle to oxidize fat
~to switch between
glucose & fat
oxidation
“so much carbs & glucose,
you can’t burn fat”